Lifting table frame and lifting table

Abstract

The utility model discloses a lifting table frame and a lifting table, and the lifting table frame comprises a cross beam which comprises a first cross beam and a second cross beam, and the first cross beam is rotatably connected with the second cross beam; the side beams comprise a first side beam and a second side beam, and the opposite ends of the first side beam and the second side beam are rotationally connected with the cross beam; the top of the lifting stand column is rotationally connected with the cross beam; and the foot margin is detachably connected to the bottom of the lifting stand column. According to the lifting table frame, the first cross beam and the second cross beam are arranged to be of a structure capable of being folded relative to the cross beams, the first side beam, the second side beam and the lifting stand column are arranged to be of a structure capable of being folded relative to the cross beams, and the ground feet and the lifting stand column are arranged to be of a detachable structure, so that the packaging space occupied by the lifting table frame is greatly reduced, and transportation is convenient. A user only needs to rotate the lifting stand columns, the side beams and the cross beams, the lifting table frame in the folded state in the packaging process can be unfolded to be in the use state, box disassembly and installation can be carried out by himself / herself without tools, and the assembly difficulty of the user is lowered by himself / herself.

Description

TECHNICAL FIELD

[0001] The utility model belongs to furniture field, concretely relates to a lifting table frame and lifting table. BACKGROUND

[0002] With the development of technology and the improvement of living standards, the lifting table with lifting function is more and more popular among the public, and its use is more and more widespread. At present, the lifting table on the market includes a table plate and a table frame installed below the table plate for supporting the table plate, the table frame has a crossbeam, lifting columns installed at both ends of the crossbeam and ground feet installed at the bottom of the lifting columns, because the overall volume of the lifting table is large, in order to facilitate packaging and transportation, the table plate and the table frame are usually packaged as multiple parts.

[0003] Although the above packaging method reduces the packaging volume, the user needs to assemble the crossbeam, lifting columns, ground feet and table plate in sequence after receiving, the assembly difficulty is large, and the user experience is poor. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a lifting table frame and a lifting table to solve the problem of large assembly difficulty of the user after receiving the lifting table.

[0005] In order to solve the above technical problem, the utility model adopts the following technical scheme: a lifting table frame, comprising: a crossbeam, comprising a first crossbeam and a second crossbeam extending horizontally, the first crossbeam and the second crossbeam are rotationally connected between them, the first crossbeam and the second crossbeam are rotated to switch between the coaxial use state and the folding state of approaching each other; side beams are provided with two groups, two groups of side beams are respectively horizontally arranged at both ends of the crossbeam, each group of side beams respectively comprises a first side beam and a second side beam, the opposite end of the first side beam and the second side beam is rotationally connected with the crossbeam, the first side beam and the second side beam are rotated to switch between the use state perpendicular to the crossbeam and the folding state approaching the crossbeam; lifting columns are provided with two, two lifting columns are respectively vertically arranged at both ends of the crossbeam for driving the crossbeam to lift, the top of the lifting column is rotationally connected with the crossbeam, two lifting columns are rotated to the direction of approaching each other to fold relative to the crossbeam; ground feet are detachably connected at the bottom of the lifting column, the ground feet extend horizontally to support the lifting column. The technical scheme has the following technical effects:

[0006] The utility model discloses a first crossbeam and second crossbeam are set up to the structure of relative folding, through the first side beam, second side beam and lifting column are set up to the structure of relative crossbeam folding, and the foot and lifting column are set up to the structure of detachable, so that when packing lifting table frame, can fold crossbeam to shorten the packing length occupied by crossbeam, and the side beam and the lifting column of not installing foot are folded to crossbeam, so that the side beam and the lifting column are respectively and side by side arranged at the different side of crossbeam, greatly reduce the packing space of lifting table frame, convenient transportation.

[0007] In the lifting table frame, the lifting column includes a sleeve assembly provided with a connecting plate and a lifting assembly arranged in the sleeve assembly for driving the sleeve assembly to extend and retract, the connecting plate is fixed on the top of the sleeve assembly to lift with the sleeve assembly, and the sleeve assembly is rotatably connected with the crossbeam through the connecting plate. By setting the top of the sleeve assembly as a structure that the connecting plate is directly rotatably connected with the crossbeam, and arranging the lifting assembly in the sleeve assembly, the motor of the lifting assembly for driving the sleeve assembly to extend and retract is arranged in the sleeve assembly instead of above the sleeve assembly. When the lifting column rotates relative to the crossbeam, only the connecting plate rotates with the lifting column above the sleeve assembly, and the motor of the lifting assembly does not occupy the space above the sleeve assembly. Thus, when the lifting table frame is in the folded state, the space occupied by the lifting column is reduced, and the packaging volume is reduced.

[0008] In the lifting table frame, when the lifting table frame is packed and stored, the crossbeam and the side beam are in the folded state, the lifting column is folded relative to the crossbeam, the lifting column and the crossbeam form a placing gap through the connecting plate, and the foot is detached from the lifting column and stored in the placing gap. The placing gap is just matched with the foot, and the foot detached from the lifting column is stored in the placing gap, which further reduces the overall packaging volume of the lifting table frame, and facilitates packaging and transportation.

[0009] In the lifting table frame, the top of the connecting plate is provided with a supporting groove matched with the cross beam, the cross beam is provided with a rotating shaft, the inner side wall of the supporting groove is provided with a rotating shaft hole, and the rotating shaft is horizontally inserted into the rotating shaft hole to rotate the connecting plate and the cross beam. During the rotation of the lifting column to switch the lifting column to the use state perpendicular to the cross beam, the inner bottom wall of the supporting groove abuts against the bottom surface of the cross beam, so as to prompt the user that the lifting column is rotated to the position, and the over-rotation of the lifting column is avoided. When the lifting column supports the cross beam, the connecting plate supports and limits the two sides and the bottom of the cross beam, the contact area is increased, the assembly is facilitated, and the supporting effect is good.

[0010] In the lifting table frame, the cross beam is further provided with a clamping protrusion parallel to the rotating shaft, the inner wall of the supporting groove is provided with a clamping groove, the clamping groove comprises an installation part extending longitudinally to penetrate the top of the supporting groove and a limiting part extending transversely from the bottom of the installation groove, and the clamping protrusion is clamped into the limiting part to prevent the lifting column perpendicular to the cross beam from rotating freely. When the lifting table frame is in the folded state, the clamping protrusion and the clamping groove are in the disengaged state. When the user needs to switch the lifting column to the use state, the lifting column is first rotated, so that the rotating shaft rotates in the rotating shaft hole, the clamping protrusion slides from the top of the installation part into the top of the installation part, then the lifting column is horizontally moved, so that the clamping protrusion is clamped into the limiting part from the installation part, at this time, the rotating shaft slides from one end of the rotating shaft hole to the other end, and the installation is completed. The upper and lower ends of the clamping protrusion abut against the limiting part respectively, so as to prevent the connecting plate from rotating freely around the rotating shaft, and further prevent the lifting column from being freely folded relative to the cross beam, and the installation is more stable.

[0011] In the lifting table frame, the bottom of the cross beam and the connecting plate is respectively provided with a first locking part and a second locking part, and the first locking part is locked with the second locking part to prevent the clamping protrusion from being freely disengaged from the limiting part. When the first locking part is locked with the second locking part, the relative displacement of the cross beam and the connecting plate in the horizontal direction is prevented, that is, the clamping protrusion is prevented from being freely disengaged from the limiting part, so that the installation of the lifting column on the cross beam is more stable and reliable, so as to facilitate the user to install the fixed lifting support to the bottom of the table plate.

[0012] In the lifting table frame, the first cross beam and the second cross beam are rotatably connected through a hinge assembly, the hinge assembly is detachably connected to the top of the first cross beam and the second cross beam, and the first cross beam and the second cross beam are folded by being upwardly rotated. The hinge assembly is detachably connected to the top of the first cross beam and the second cross beam, so that the cross beam in the unfolded state can only be upwardly rotated around the hinge assembly to switch to the folded state, and the first cross beam and the second cross beam are upwardly rotated to fold the cross beam, so that the lifting column does not hinder the folding of the cross beam, and the folding is more convenient.

[0013] In the lifting table frame, the bottom of the adjacent end of the first cross beam and the second cross beam is respectively provided with a third locking part and a fourth locking part, the third locking part is locked through the fourth locking part, so that the cross beam is kept in the use state. In the process of locking the cross beam to the table plate, the third locking part and the fourth locking part can effectively avoid the free folding of the cross beam, reduce the assembly difficulty of the cross beam and the table plate, and improve the assembly experience of the user.

[0014] In the lifting table frame, the lifting table frame further comprises a telescopic assembly detachably connected between the first cross beam and the second cross beam, when the telescopic assembly is connected with the first cross beam and the second cross beam respectively, at least one of the first cross beam and the second cross beam is slidingly connected with the telescopic assembly, so that the cross beam is telescopic. By replacing the hinge assembly and the telescopic assembly, the cross beam has different functions, when the lifting table frame needs to be packaged and transported, the cross beam can be folded to shorten the space length occupied by the cross beam, so as to facilitate packaging and transportation; when the table frame needs to be used, the cross beam can be directly unfolded to be installed at the bottom of the table plate, or the hinge assembly can be removed and replaced with the telescopic assembly, so that the cross beam is adjusted to the length suitable for the table plate and then installed on the table plate, and the support effect of the table plate is good.

[0015] In the lifting table frame, the telescopic assembly comprises a sliding part and a connecting part provided with a sliding hole at both ends, the connecting part is covered on the end part of the first cross beam and the second cross beam, the sliding part is fixed on the side part of the first cross beam and the second cross beam and horizontally penetrates in the sliding hole to be slidingly connected with the sliding hole. By inserting the connecting part in the sliding hole, the sliding connection between the connecting part and the first cross beam and the second cross beam can be realized, the structure is simple and easy to disassemble and assemble, the use is convenient, and the use experience of the user is improved.

[0016] In the lifting table frame, the lifting table frame further comprises a controller for controlling the lifting of the lifting column, the cross beam is provided with a containing groove with an opening facing the table plate, the controller is arranged in the containing groove, and the bottom of the cross beam is further provided with an access opening longitudinally penetrating through the cross beam to communicate the containing groove with the outside. Because the cross beam is fixed on the table plate by screws, the access opening is arranged at the bottom of the cross beam, so that the maintenance personnel can repair the controller by inserting their hands into the access opening or taking out the controller through the access opening when the controller fails or is damaged, without disassembling and assembling the cross beam and the table plate, so that the repair difficulty of the controller is greatly reduced, and the repair difficulty of the lifting table is further reduced, which can be completed by a single maintenance personnel.

[0017] In the lifting table frame, the bottom of the cross beam is further provided with a cover plate which is detachably connected to the cross beam to cover the access hole. When the controller needs to be repaired, the maintenance personnel can detach the cover plate, and after repairing the controller, the maintenance personnel can cover the cover plate to the access hole again to avoid water or dust accumulation in the accommodation groove, thereby avoiding the influence of water or dust accumulation in the accommodation groove on the work of the controller and prolonging the service life of the controller.

[0018] In the lifting table frame, the cover plate comprises a plate body, one end of the plate body is locked with the cross beam through a locking assembly, and the other end of the plate body is provided with an inclined stop edge. When the cover plate covers the access hole, the stop edge extends into the accommodation groove, and the lower surface of the stop edge abuts against the cross beam. When the cover plate covers the access hole, the inclined stop edge extends into the accommodation groove, and the lower surface of the stop edge abuts against the cross beam on the side of the access hole, that is, the cross beam limits the one end of the plate body in the vertical direction through the clamping assembly, and the cross beam limits the other end of the plate body in the vertical direction through abutting against the stop edge to prevent the plate body from being freely detached from the access hole. The installation and disassembly of the plate body are facilitated, and the installation of the plate body is more stable and reliable.

[0019] In the lifting table frame, the one end of the plate body provided with the stop edge is further provided with a stop piece. When the cover plate covers the access hole, the stop piece extends horizontally and abuts against the bottom surface of the cross beam. When the one end of the cover plate provided with the stop piece and the stop edge is installed in place, the stop piece abuts against the bottom surface of the cross beam to limit the end of the cover plate, thereby preventing the cover plate from moving further into the accommodation groove. At the same time, the stop edge can abut against the cross beam to prevent the end of the cover plate from freely moving downward from the access hole to be detached from the access hole, thereby facilitating the installation and disassembly of the cover plate.

[0020] In the lifting table frame, the locking assembly comprises a positioning member fixed in the accommodation groove and a clamping member fixed on the plate body. The clamping member is provided with a clamping groove, and the positioning member comprises a seat body provided with a positioning groove, a spring and a ball arranged in the positioning groove. The spring is used to partially push the ball into the clamping groove to enable the clamping member to be clamped with the positioning member. The structure of the spring and the ball enables the positioning member and the clamping member to be locked well. At the same time, the maintenance personnel can separate the positioning member and the clamping member by force, which is simple and convenient to operate and does not damage the two members, thereby prolonging the service life.

[0021] In the lifting table frame, the bottom of the lifting column is provided with a limiting piece, the foot is provided with a limiting hole for penetrating the limiting piece, the bottom of the foot is further provided with a clamping piece, when the lifting column and the foot are in an assembled state, the lower end of the limiting piece penetrates and extends out of the limiting hole to be clamped with the clamping piece, and the limiting piece is horizontally inserted with the foot on the side of the limiting hole under the pulling of the clamping piece. The horizontally inserted limiting piece and the foot can limit the lifting column and the foot in the vertical direction to avoid the lifting column and the foot from shaking or separating in the vertical direction, thereby ensuring the stable locking of the lifting column and the foot. When disassembling, the clamping piece is only needed to be separated from the limiting piece, and then the lifting column can be moved to make the limiting piece separate from the limiting hole, which is simple and convenient to operate. The clamping piece and the limiting piece are stably locked, and the lifting column and the foot can be assembled without the aid of tools, which is simple and convenient to operate, greatly reduces the assembly difficulty, is convenient for users to disassemble and assemble independently, and improves the user experience.

[0022] In the lifting table frame, the limiting piece includes a vertically extending connecting part and a horizontally extending limiting part, the limiting part is arranged on one side of the bottom of the connecting part, and when the clamping piece is clamped with the side of the connecting part away from the limiting part, the limiting part abuts against the bottom surface of the foot on one side of the limiting hole. The bottom surface of the foot abuts against the top surface of the limiting part, and the top surface of the foot abuts against the bottom surface of the lifting column to realize the horizontal insertion of the limiting piece and the foot. The clamping piece applies a force to the connecting part in the direction of the limiting piece to keep the position of the limiting piece always below the foot on the side of the limiting hole, that is, to keep the abutment of the limiting part and the ground of the foot. The connecting part not only enables the horizontal insertion of the limiting piece and the foot, but also facilitates the user to check whether the limiting piece and the limiting hole are inserted in place so as to clamp the limiting piece with the clamping piece.

[0023] In the lifting table frame, one side of the limiting piece is provided with an insertion protrusion, and when the limiting piece is clamped with the clamping piece, the insertion protrusion is inserted with the inner wall of the limiting hole. The structure is simple and the insertion is stable and reliable.

[0024] In the lifting table frame, the clamping piece includes a positioning block fixed to the bottom of the foot and a clamping ring rotationally connected to the positioning block, the clamping ring pulls the limiting piece in the direction of the positioning block by being sleeved on the limiting piece to keep the limiting piece and the foot inserted. After the limiting piece and the foot are horizontally inserted in place, the clamping ring is rotated to make the other end of the clamping ring sleeved on the limiting piece, the inner ring of the clamping ring abuts against the inner wall of the clamping groove to pull the limiting piece in the direction of the positioning block (i.e. the direction of the limiting part), so that the connecting part and the limiting part abut against the foot, and the limiting piece and the foot are stably kept in the horizontally inserted state, which is simple to operate without the aid of tools.

[0025] The utility model also provides a lifting table, including table board and install in the bottom of table board lifting table frame, lifting table frame is above technical scheme in lifting table frame, crossbeam and side beam install in the bottom of table board.

[0026] The features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be further described in connection with the drawings and specific embodiments:

[0028] Figure 1 It is the perspective view of lifting table;

[0029] Figure 2 It is Figure 1 The enlarged view of A of it;

[0030] Figure 3 It is the use state diagram of lifting table frame;

[0031] Figure 4 It is Figure 3 The enlarged view of B of it;

[0032] Figure 5 It is the folding schematic view of crossbeam, side beam and lifting column;

[0033] Figure 6 It is the packing state diagram of lifting table frame;

[0034] Figure 7 It is the local schematic view of lifting column;

[0035] Figure 8 It is the local schematic view of crossbeam in use state;

[0036] Figure 9 It is the local schematic view of crossbeam in folding state;

[0037] Figure 10 It is the schematic view of installing telescopic component on crossbeam;

[0038] Figure 11 It is the schematic view of disconnecting table frame and telescopic component;

[0039] Figure 12 It is the schematic view of installing cover plate on access hole of crossbeam;

[0040] Figure 13 It is the schematic view of not installing cover plate on access hole of crossbeam;

[0041] Figure 14 It is the schematic view of disassembling cover plate of access hole Figure 1 ;

[0042] Figure 15 Schematic view for dismounting the cover plate of the access hole Figure 2

[0043] Figure 16 Perspective view of the cover plate

[0044] Figure 17 Sectional view of the cover plate

[0045] Figure 18 Sectional view of the crossbeam with the cover plate installed

[0046] Figure 19 Schematic view of the foot installed at the bottom of the lifting column

[0047] Figure 20 Sectional view of the foot installed at the bottom of the lifting column

[0048] Figure 21 Schematic view of the bottom of the lifting column

[0049] Figure 22 Partial schematic view of the foot

[0050] Reference signs:

[0051] 100, table plate

[0052] 200, crossbeam; 210, first crossbeam; 211, third locking piece; 212, access hole; 213, sealing edge; 220, second crossbeam; 221, fourth locking piece; 230, accommodating groove; 231, controller; 240, pivot; 250, clamping protrusion; 260, first locking piece; 270, hinge assembly; 271, first page sheet; 272, second page sheet; 273, rotating piece; 280, telescopic assembly; 281, sliding piece; 282, connecting piece; 2821, sliding hole; 291, first avoiding groove; 292, second avoiding groove

[0053] 300, side beam; 310, first side beam; 320, second side beam

[0054] 400, lifting column; 410, sleeve assembly; 420, connecting plate; 421, supporting groove; 422, pivot hole; 423, clamping groove; 4231, mounting portion; 4232, stop portion; 424, second locking piece; 430, placing gap; 440, limiting piece; 441, connecting portion; 442, limiting portion; 443, clamping groove; 444, plug-in protrusion

[0055] 500, foot; 510, base; 511, upper shell; 512, lower shell; 513, mounting gap; 520, limiting hole; 530, clamping piece; 531, positioning block; 532, clamping ring; 540, supporting protrusion; 550, avoiding gap​

[0056] 600, cover plate; 610, plate body; 611, operation hole; 620, clamping assembly; 621, positioning piece; 6211, seat body; 6212, positioning groove; 6213, elastic ball; 6214, spring; 622, clamping piece; 6221, clamping groove; 630, stop edge; 640, stop piece; 650, guide edge. DETAILED DESCRIPTION

[0057] The utility model provides a kind of lifting table frame, comprising: crossbeam, including the first crossbeam and second crossbeam of horizontal extension, the first crossbeam and second crossbeam are rotationally connected between, the first crossbeam and second crossbeam are switched by rotating, to between the use state of coaxially arranged and the folding state of two sides closing to each other;Side beam is equipped with two groups, two groups of side beam are respectively horizontally arranged in the two ends of crossbeam, and each group of side beam includes first side beam and second side beam, and the opposite end of first side beam and second side beam is rotationally connected with crossbeam, and first side beam and second side beam are switched by rotating, to between the use state of vertical with crossbeam and the folding state of closing to each other with crossbeam;Lifting column is equipped with two, two lifting columns are respectively vertically arranged in the two ends of crossbeam, to be used for driving crossbeam lifting, and the top of lifting column is rotationally connected with crossbeam, and two lifting columns are folded relative to crossbeam by rotating to each other closing direction;Ground pin is detachably connected in the bottom of lifting column, and ground pin extends horizontally to support lifting column.The utility model by the first crossbeam and second crossbeam are set to relatively foldable structure, by the first side beam, second side beam and lifting column are set to relatively foldable structure with crossbeam, and ground pin and lifting column are set to detachable structure, so that when packing lifting table frame, crossbeam can be folded to shorten the packing length occupied by crossbeam, and side beam and the lifting column without installing ground pin are folded relative to crossbeam, so that side beam and lifting column are respectively arranged side by side in different side of crossbeam, greatly reduce the packing space occupied by lifting table frame, facilitate transportation.When user receives lifting table frame, only needs to rotate lifting column, side beam and crossbeam, can be unfolded into use state in the folding state of lifting table frame in packing, then ground pin is installed to the bottom of lifting column, and the installation of lifting table frame can be completed, without the alignment and locking installation of crossbeam, side beam and lifting column, whole installation process is simple and easy to operate, after user receives packing, without the aid of tool, can be self-unloading and complete installation, reduce the difficulty of user self-assembly, improve assembly efficiency, improve the use experience of user.

[0058] The technical solutions of the embodiments of the utility model will be explained and described in combination with the drawings of the embodiments of the utility model below, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without making creative efforts all belong to the protection scope of the utility model.

[0059] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0060] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0061] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0062] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical direction of the first feature above and oblique above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and oblique below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0063] Embodiment one:

[0064] A lifting table frame, such as Figures 1 to 22As shown, it comprises a cross beam 200, two groups of side beams 300, two lifting columns 400 and two ground feet 500. The two groups of side beams 300 are horizontally arranged at the two ends of the cross beam 200 respectively. The two lifting columns 400 are vertically arranged at the two ends of the cross beam 200 respectively for driving the cross beam 200 and the side beams 300 to lift. The top of the lifting column 400 is rotationally connected with the cross beam 200. The two lifting columns 400 can rotate towards each other to fold relative to the cross beam 200 so that the two lifting columns 400 are arranged in parallel on the bottom surface of the cross beam 200. The lifting column 400 and the cross beam 200 are arranged side by side. The two ground feet 500 are installed at the bottom of the two lifting columns 400 respectively. The ground feet 500 support the lifting columns 400 by extending horizontally. The ground feet 500 and the lifting columns 400 are detachably connected. The cross beam 200 comprises a first cross beam 210 and a second cross beam 220 extending horizontally. The adjacent ends of the first cross beam 210 and the second cross beam 220 are rotationally connected. The first cross beam 210 and the second cross beam 220 can rotate to switch the cross beam 200 between the use state and the folded state. When the cross beam 200 is in the use state, the first cross beam 210 and the second cross beam 220 are coaxially arranged. When the cross beam 200 is in the folded state, the free ends of the first cross beam 210 and the second cross beam 220 are close to each other so that the first cross beam 210 and the second cross beam 220 are arranged in parallel.

[0065] The utility model discloses a first crossbeam 210 and second crossbeam 220 are set up to the structure of relative folding, through the first side beam 310, second side beam 320 and lifting column 400 are set up to the structure of relative crossbeam 200 folding, and the foot 500 and lifting column 400 are set up to the structure of detachable, so that when packing lifting table frame, can fold crossbeam 200 to shorten the packing length of crossbeam 200 occupies, and side beam 300 and the lifting column 400 of not installing foot 500 relative crossbeam 200 folding, so that side beam 300 and lifting column 400 are arranged respectively side by side in the different side of crossbeam 200, greatly reduce the packing space of lifting table frame, convenient transportation.

[0066] In the embodiment, the lifting column 400 includes a sleeve assembly 410 and a lifting assembly, the lifting assembly is installed inside the sleeve assembly 410 for driving the sleeve assembly 410 to stretch and retract, the sleeve assembly 410 drives the crossbeam 200 to lift through stretching and retracting, a connecting plate 420 that lifts with the sleeve assembly 410 is fixed at the top of the sleeve assembly 410, the sleeve assembly 410 is rotationally connected with the crossbeam 200 through the connecting plate 420, an accommodating groove 230 with an opening upward is formed on the crossbeam 200, and a controller 231 for driving the lifting assembly to lift is hidden in the accommodating groove 230 of the crossbeam 200. By setting the top of the sleeve assembly to be rotationally connected with the crossbeam 200 through the connecting plate 420 and setting the lifting assembly in the sleeve assembly 410, the motor of the lifting assembly for driving the sleeve assembly 410 to stretch and retract is arranged in the sleeve assembly 410 instead of above the sleeve assembly 410, when the lifting column 400 rotates relative to the crossbeam 200, only the connecting plate 420 rotates with the lifting column 400 above the sleeve assembly 410, the motor of the lifting assembly does not occupy the space above the sleeve assembly 410, thereby reducing the space occupied by the lifting column 400 when the lifting table frame is in the folded state, and reducing the packaging volume.

[0067] As Figure 5As shown, when the lifting table frame is packaged and stored, the cross beam 200 and the side beam 300 are in a folded state, the lifting column 400 is folded relative to the cross beam 200, and the parallelly arranged lifting column 400 and the cross beam 200 form a placement gap 430 through the connecting plate 420. The width of the placement gap 430 is just adapted to the thickness of the foot 500. The foot 500 separated from the lifting column 400 is stored in the placement gap 430, which further reduces the overall packaging volume of the lifting table frame, facilitating packaging and transportation.

[0068] As shown, Figure 7 The top of the connecting plate 420 in the embodiment is provided with a supporting groove 421 for cooperation with the cross beam 200. A rotating shaft 240 is arranged on the cross beam 200, and a rotating shaft hole 422 is arranged on the inner side wall of the supporting groove 421. The rotating shaft hole 422 can be arranged through or not through the connecting plate 420. The rotating shaft 240 is horizontally inserted into the rotating shaft hole 422 to rotatably connect the connecting plate 420 and the cross beam 200. When the lifting column 400 is in the use state perpendicular to the cross beam 200, the cross beam 200 is clamped in the supporting groove 421 and abuts against the inner wall of the supporting groove 421. During rotation of the lifting column 400 to switch the lifting column 400 to the use state perpendicular to the cross beam 200, the inner bottom wall of the supporting groove 421 abuts against the bottom surface of the cross beam 200, which can prompt the user that the lifting column 400 is rotated to the position, avoiding over-rotation of the lifting column 400. When the lifting column 400 supports the cross beam 200, the connecting plate 420 supports and limits the two sides and the bottom of the cross beam 200, increasing the contact area, facilitating assembly, and having good supporting effect.

[0069] The embodiment is further provided with a clamping protrusion 250 on the cross beam 200, which is arranged in parallel with the rotating shaft 240. A clamping groove 423 is arranged on the inner wall of the supporting groove 421. The clamping groove 423 includes a mounting portion 4231 and a limiting portion 4232. The mounting portion 4231 is arranged in the longitudinal direction and penetrates through the top of the supporting groove 421. The limiting portion 4232 is arranged in the transverse direction from the bottom of the mounting groove. The rotating shaft hole 422 is arranged in the transverse direction, so that the rotating shaft 240 can slide or rotate in the rotating shaft hole 422. Figure 5 and Figure 6As shown, when the lifting table frame is in the folded state, the clamping protrusion 250 is in the disengaged state with the clamping groove 423; when the user needs to switch the lifting column 400 to the use state, first rotate the lifting column 400, so that the rotating shaft 240 rotates in the rotating shaft hole 422, the clamping protrusion 250 slides from the top of the mounting portion 4231 into the top of the mounting portion 4231, and then horizontally moves the lifting column 400, so that the clamping protrusion 250 is clamped into the stop portion 4232 by the mounting portion 4231, at this time the rotating shaft 240 slides from one end to the other end of the rotating shaft hole 422, and the installation is completed. The upper and lower ends of the clamping protrusion 250 respectively abut against the stop portion 4232 to prevent the connecting plate 420 from freely rotating around the rotating shaft 240, thereby preventing the lifting column 400 from freely folding relative to the cross beam 200, and the installation is more stable.

[0070] The first locking member 260 and the second locking member 424 are respectively arranged at the bottom of the cross beam 200 and the connecting plate 420, when the first locking member 260 and the second locking member 424 are locked, the relative displacement of the cross beam 200 and the connecting plate 420 in the horizontal direction can be prevented, that is, the clamping protrusion 250 is prevented from being freely disengaged from the stop portion 4232, so that the installation of the lifting column 400 on the cross beam 200 is more stable and reliable, so that the user can install the fixed lifting support to the bottom of the table plate 100. The first locking member 260 and the second locking member 424 in the embodiment can have various structures, such as the structure of horizontally inserted locking screws and locking nuts, or the structure of horizontally inserted latches and sockets, etc. Preferably, the first locking member 260 includes a fixed block and a clamping ring, the fixed block is fixed at the bottom of the cross beam 200, and one end of the clamping ring is rotatably connected to the fixed block. The second locking member 424 is a clamping hook fixed at the bottom of the connecting plate 420. The clamping ring can be clamped or disengaged with the clamping hook by rotating. When the clamping hook is clamped in the clamping ring, the first locking member 260 and the second locking member 424 are locked, which is simple in structure, convenient for user operation, and reduces the time required for locking the first locking member 260 and the second locking member 424. The first locking member 260 and the second locking member 424 are respectively arranged in the two first avoiding grooves 291 at the bottom of the cross beam 200 and the connecting plate 420, which is more beautiful.

[0071] As Figure 3 and Figure 4As shown, the first cross beam 210 and the second cross beam 220 are rotatably connected through the hinge assembly 270, which is detachably connected at the top of the first cross beam 210 and the second cross beam 220, so that the cross beam 200 in the unfolded state can only be rotated upward around the hinge assembly 270 to switch to the folded state, and the first cross beam 210 and the second cross beam 220 are rotated upward to fold the cross beam 200, so that the lifting column 400 does not hinder the folding of the cross beam 200, and the folding is more convenient. The third locking piece 211 and the fourth locking piece 221 are respectively arranged at the bottom of the adjacent end of the first cross beam 210 and the second cross beam 220, and after the user unfolds the cross beam 200, the third locking piece 211 and the fourth locking piece 221 can be locked to limit the first cross beam 210 and the second cross beam 220, so that the cross beam 200 remains in the unfolded state coaxial with the first cross beam 210 and the second cross beam 220. During the process of locking the cross beam 200 to the table board 100, the third locking piece 211 and the fourth locking piece 221 can effectively prevent the cross beam 200 from being freely folded, reduce the assembly difficulty of the cross beam 200 and the table board 100, and improve the assembly experience of the user. Preferably, the third locking piece 211 and the fourth locking piece 221 have the same structure as the first locking piece 260 and the second locking piece 424, respectively. The second avoiding groove 292 is arranged at the bottom of the first cross beam 210 and the second cross beam 220, and the third locking piece 211 and the fourth locking piece 221 are arranged in the two second avoiding grooves 292, respectively.

[0072] The hinge assembly 270 in the embodiment is a hinge, as shown in the figure. Figure 4 As shown, the hinge includes a first leaf 271, a second leaf 272 and a rotating piece 273, the first leaf 271 and the second leaf 272 are rotatably connected at both sides of the rotating piece 273, and the first leaf 271 and the second leaf 272 are respectively used to connect the first cross beam 210 and the second cross beam 220. Through a simple structure, the rotation of the first cross beam 210 and the second cross beam 220 can be realized, the occupied space of the hinge assembly 270 is reduced, the hinge assembly 270 does not affect the rotation of the first cross beam 210 and the second cross beam 220, and the cost is reduced. Of course, it can be understood that the hinge assembly 270 can be provided with one or more, a single hinge assembly 270 simplifies the installation steps of the whole cross beam 200, and multiple hinge assemblies 270 are arranged side by side to enhance the strength of the hinge joint of the first cross beam 210 and the second cross beam 220.

[0073] The lifting table frame in the embodiment further comprises a telescopic assembly 280, which is detachably connected to one end adjacent to the first cross beam 210 and the second cross beam 220. When the length of the cross beam 200 is insufficient to support the table board 100, the user can detach the hinge assembly 270, install the telescopic assembly 280 on the cross beam 200, so that the telescopic assembly 280 is connected to the first cross beam 210 and the second cross beam 220 respectively, and at least one of the first cross beam 210 and the second cross beam 220 is slidingly connected to the telescopic assembly 280, so that the cross beam 200 can be telescoped. When the telescopic assembly 280 is installed on the cross beam 200, one end of the telescopic assembly 280 is fixed on the first cross beam 210, and the other end is slidingly connected to the second cross beam 220; or one end of the telescopic assembly 280 is fixed on the second cross beam 220, and the other end is slidingly connected to the first cross beam 210; or both ends of the telescopic assembly 280 are slidingly connected to the first cross beam 210 and the second cross beam 220 respectively, so that the cross beam 200 can be telescoped. By replacing the hinge assembly 270 and the telescopic assembly 280, the cross beam 200 has different functions. When the hinge assembly 270 is installed on the cross beam 200 for use, the first cross beam 210 and the second cross beam 220 can be switched between the unfolded state of the first cross beam 210 and the second cross beam 220 coaxial and the folded state of the first cross beam 210 and the second cross beam 220 by rotating around the hinge assembly 270; when the telescopic assembly 280 is installed on the cross beam 200 for use, the length of the cross beam 200 can be adjusted by the telescopic assembly 280. When the lifting table frame needs to be packaged and transported, the cross beam 200 can be folded to shorten the space length occupied by the cross beam 200, facilitating packaging and transportation; when the table frame needs to be used, the cross beam 200 can be directly unfolded for installation at the bottom of the table board 100, or the hinge assembly 270 can be detached and replaced with the telescopic assembly 280 to adjust the length of the cross beam 200 to the length suitable for the table board 100 before installation on the table board 100, which has good supporting effect on the table board 100. The hinge assembly 270 and the telescopic assembly 280 make the cross beam 200 have the telescoping function on the basis of being foldable, so that the cross beam 200 can be applied to table boards 100 of various sizes, has a wide range of applications, is convenient for packaging, and reduces packaging difficulty and packaging cost. The third locking member 211 and the fourth locking member 221 are respectively arranged in the two second avoiding grooves 292, which are not only beautiful but also can effectively avoid affecting the installation of the telescopic assembly 280.

[0074] The two ends of the telescopic assembly 280 in the embodiment are detachably connected with the first cross beam 210 and the second cross beam 220 respectively, the telescopic assembly 280 comprises a sliding piece 281 and a connecting piece 282, the connecting piece 282 is provided with sliding holes 2821 at the two ends, the sliding holes 2821 extend horizontally, the connecting piece 282 is covered on the end portions of the first cross beam 210 and the second cross beam 220, the sliding piece 281 is fixed on the side portions of the first cross beam 210 and the second cross beam 220 and horizontally penetrates in the sliding holes 2821 to be in sliding connection with the sliding holes 2821. The sliding connection between the connecting piece 282 and the first cross beam 210 and the second cross beam 220 can be realized by inserting the connecting piece 282 in the sliding holes 2821, the structure is simple and easy to disassemble and assemble, convenient to use, and the use experience of the user is improved. Preferably, the sliding piece 281 is a locking screw, the locking screw is fixed on the cross beam 200 through sliding, the head portion of the locking screw is located on the side, away from the cross beam 200, of the sliding piece 281, when the locking screw is not locked with the cross beam 200, the gap width between the head portion of the locking screw and the cross beam 200 is greater than the width of the connecting piece 282, so that the locking screw can slide horizontally in the sliding hole 2821 to adjust the length of the cross beam 200, when the length of the cross beam 200 is adjusted completely, the locking screw is tightened, so that the head portion of the locking screw and the side wall of the support beam jointly clamp the connecting piece 282, the cross beam 200 is kept in the telescopic position required, the length of the cross beam 200 after adjustment is avoided from changing freely, and the operation is convenient. The two ends of the connecting piece 282 are respectively provided with a plurality (two or more than two) of sliding holes 2821, the plurality of sliding holes 2821 are arranged along the same horizontal line, the interval arrangement of the sliding holes 2821 makes the cross beam 200 have a greater adjustment range, meanwhile, the strength of the connecting piece 282 caused by the too long single sliding hole 2821 can be avoided, the connecting piece 282 is avoided from deforming, and the service life of the connecting piece 282 is prolonged.

[0075] As Figure 13As shown, in this embodiment, the bottom of the cross beam 200 is also provided with an access hole 212 which longitudinally penetrates the cross beam 200 to enable the accommodation groove 230 to communicate with the outside through the access hole 212. By arranging the accommodation groove 230 on the cross beam 200 and placing the controller 231 for controlling the lifting column 400 in the accommodation groove 230, the controller 231 is hidden, avoiding the exposure of the controller 231 to the outside or the installation of the controller 231 on the top of the lifting column 400, which is more beautiful and prevents the user from colliding with the controller 231 when using the lifting table. Since the cross beam 200 is fixed on the table top 100 by screws, the access hole 212 is arranged at the bottom of the cross beam 200, so that when the controller 231 fails or is damaged, the maintenance personnel can reach into the access hole 212 to repair the controller 231 or take out the controller 231 through the access hole 212 for repair, without disassembling and assembling the cross beam 200 and the table top 100 to complete the repair of the controller 231, greatly reducing the repair difficulty of the controller 231 and the lifting table.

[0076] As shown, Figure 10 In order to prevent a large amount of dust or liquid from entering the accommodation groove 230 of the cross beam 200 through the access hole 212 and being difficult to clean, the bottom of the cross beam 200 is also provided with a cover plate 600 which covers the access hole 212 in this embodiment. The cover plate 600 is detachably connected to the cross beam 200. When the controller 231 needs to be repaired, the maintenance personnel can disassemble the cover plate 600. After repairing the controller 231, the maintenance personnel can cover the cover plate 600 to the access hole 212 again to avoid water or dust accumulation in the accommodation groove 230, thereby avoiding the influence of water or dust accumulation in the accommodation groove 230 on the work of the controller 231 and prolonging the service life of the controller 231.

[0077] In this embodiment, as shown in Figure 12 and Figure 16 The cover plate 600 includes a plate body 610. One end of the plate body 610 is locked to the cross beam 200 by a clamping assembly 620. The other end of the plate body 610 is provided with a stop edge 630 which is arranged obliquely, i.e. the included angle between the upper surface of the stop edge 630 and the top surface of the plate body 610 is less than 180 degrees. When the cover plate 600 covers the access hole 212, the obliquely arranged stop edge 630 extends into the accommodation groove 230, and the lower surface of the stop edge 630 abuts against the cross beam 200 at the side of the access hole 212, i.e. the cross beam 200 limits one end of the plate body 610 in the vertical direction by the clamping assembly 620, and the cross beam 200 limits the other end of the plate body 610 in the vertical direction by abutting against the stop edge 630 to prevent the plate body 610 from being freely detached from the access hole 212. The installation and disassembly of the plate body 610 are facilitated, and the installation of the plate body 610 is more stable and reliable.

[0078] In order to further limit the one end of the plate body 610 provided with the stopper side 630 in the vertical direction, the plate body 610 is further provided with a stopper piece 640 in the embodiment, which is arranged at the end of the plate body 610 and arranged in parallel with the plate body 610. As shown in Figure 11 When the cover plate 600 is covered on the manhole 212, the stopper piece 640 extends horizontally to the bottom of the crossbeam 200 at the side of the manhole 212 and abuts against the bottom surface of the crossbeam 200; when the cover plate 600 is disassembled, as shown in Figure 14 and Figure 15 the one end of the plate body 610 provided with the clamping assembly 620 is disengaged from the crossbeam 200, then the plate body 610 is rotated around the other end of the plate body 610, the crossbeam 200 is movably arranged in the triangular space formed between the stopper side 630 and the stopper piece 640, so that the plate body 610 can be rotated by a certain angle, then the plate body 610 is moved obliquely downward, so that the plate body 610 can be disengaged from the manhole 212 of the crossbeam 200; when the cover plate 600 is assembled, the plate body 610 is placed obliquely below the manhole 212, and the triangular space formed between the stopper side 630 and the stopper piece 640 is aligned with the crossbeam 200 at the side of the manhole 212, so that the crossbeam 200 at the side of the manhole 212 is clamped between the stopper side 630 and the stopper piece 640, then the other end of the plate body 610 is rotated around the end of the stopper piece 640 abutting against the crossbeam 200 towards the manhole 212, until the other end of the plate body 610 is locked with the crossbeam 200 through the clamping assembly 620. When the one end of the cover plate 600 provided with the stopper piece 640 and the stopper side 630 is assembled in place, the stopper piece 640 abuts against the bottom surface of the crossbeam 200 to stop the end of the cover plate 600, so as to avoid the cover plate 600 from moving further into the accommodating groove 230, meanwhile, the stopper side 630 can abut against the crossbeam 200 to prevent the end of the cover plate 600 from freely moving downward from the manhole 212 to disengage from the manhole 212, so as to facilitate the assembly and disassembly of the cover plate 600.

[0079] As shown in Figure 16 two stopper pieces 640 are arranged in the embodiment, which are respectively located at the two sides of the stopper side 630 to be arranged in a staggered manner with the stopper side 630, by arranging the stopper side 630 and the stopper piece 640 in a staggered manner, the production and processing difficulty of the cover plate 600 can be reduced, meanwhile, the stopper piece 640 and the stopper side 630 are more closely matched with the crossbeam 200 at the side of the manhole 212, so that the limiting effect is better.

[0080] The guide edges 650 are formed by bending the two sides of the plate body 610 perpendicularly to the plate body 610, and the sealing edges 213 are formed by bending the two sides of the access hole 212 into the receiving groove 230. During the process of covering the access hole 212 with the cover plate 600, the guide edges 650 can guide and align the cover plate 600. When the cover plate 600 is covered on the access hole 212, the guide edges 650 extend into the receiving groove 230, and the side of the guide edges 650 abuts against the side of the sealing edges 213 to seal the gap between the cover plate 600 and the access hole 212, so as to prevent dust or liquid outside from entering the receiving groove 230 through the gap between the cover plate 600 and the access hole 212, and the sealing effect is good.

[0081] The stop edges 630 in the embodiment are preferably formed by bending the end of the plate body 610, and the processing difficulty is low. Figure 17 As shown in the figure, the angle between the stop edges 630 and the plate body 610 is α, and preferably, 30°≤α≤60°. By setting the angle between the stop edges 630 and the plate body 610 in the range of 30° to 60°, when the plate body 610 horizontally covers the access hole 212, the stop edges 630 will not affect the abutting and limiting of the cross beam 200 due to the too large angle, and will not affect the rotation of the cover plate 600 during the disassembly of the cover plate 600 due to the too small angle, so as to avoid the too small rotation angle and the difficulty in disassembling the cover plate 600, and reduce the disassembly difficulty of the cover plate 600.

[0082] As shown in the figure, Figure 12 and Figure 18As shown, the clamping assembly 620 comprises a positioning member 621 and a clamping member 622. The positioning member 621 is fixed in the accommodating groove 230 by a locking screw and is located above the access opening 212. The clamping member 622 is fixed above one end of the plate body 610 by a locking screw. The clamping member 622 is provided with a clamping groove 6221. The positioning member 621 comprises a seat body 6211 fixed on the cross beam 200. The seat body 6211 is provided with a horizontally extending positioning groove 6212. The positioning groove 6212 is provided with a plurality of elastic balls 6213 and springs 6214. The diameter of the opening of the positioning groove 6212 is smaller than the diameter of the elastic balls 6213, so as to prevent the elastic balls 6213 from being separated from the positioning groove 6212. In this embodiment, the positioning groove 6212 extends through the seat body 6211. The elastic balls 6213 are provided in two. The two ends of the spring 6214 abut against the two elastic balls 6213, respectively, so as to push the elastic balls 6213 out of the positioning groove 6212. When the cover plate 600 covers the access opening 212, the elastic balls 6213 are partially inserted into the clamping groove 6221 under the pushing of the spring 6214, so as to clamp the clamping member 622 and the positioning member 621. The structure of the spring 6214 and the elastic ball 6213 makes the locking effect of the positioning member 621 and the clamping member 622 good. Meanwhile, the positioning member 621 and the clamping member 622 can be separated by force, which is simple and convenient and does not damage the two members, thereby prolonging the service life. Of course, in another embodiment, the positioning groove can not extend through the seat body. The spring is provided with one elastic ball. The two ends of the spring abut against the inner wall of the positioning groove and the elastic ball, respectively, so as to push the elastic ball out of the positioning groove.

[0083] In order to facilitate the user to disassemble the cover plate 600, the plate body 610 is provided with an operation hole 611 for inserting a finger. The operation hole 611 is located on the side of the plate body 610 close to the clamping assembly 620. When it is necessary to disassemble the cover plate 600, the user or the maintenance personnel can insert a finger into the operation hole 611 and pull the cover plate 600 downward by bending the finger, so as to facilitate the force exertion. The force exerted on the cover plate 600 can separate the clamping member 622 and the positioning member 621. The operation hole 611 close to the clamping assembly 620 can save more labor.

[0084] The access opening 212 in this embodiment is located on one side of the controller 231. The projection of the controller 231 on the horizontal plane does not coincide with the projection of the access opening 212 on the horizontal plane. By staggering the access opening 212 and the controller 231, the dust entering the accommodating groove 230 through the access opening 212 can be prevented from directly accumulating on the controller 231. Also, the liquid entering the accommodating groove 230 through the access opening 212 can be prevented from directly soaking and damaging the controller 231.

[0085] As shown in FIG. 6, the cover plate 600 is provided with a plurality of operation holes 611. The operation holes 611 are located on the side of the plate body 610 close to the clamping assembly 620. When it is necessary to disassemble the cover plate 600, the user or the maintenance personnel can insert a finger into the operation hole 611 and pull the cover plate 600 downward by bending the finger, so as to facilitate the force exertion. The force exerted on the cover plate 600 can separate the clamping member 622 and the positioning member 621. The operation hole 611 close to the clamping assembly 620 can save more labor. Figure 5As shown, the embodiment is provided with a limiting piece 440 at the bottom of the lifting column 400, a limiting hole 520 for penetrating the limiting piece 440 is provided on the foot 500, and a clamping piece 530 is further provided at the bottom of the foot 500. When assembling the lifting column 400 and the foot 500, the limiting piece 440 is first penetrated into the limiting hole 520 along the vertical direction (i.e. the axial direction of the limiting hole 520), when the bottom surface of the lifting column 400 abuts against the top surface of the foot 500, the lifting column 400 is pushed horizontally (i.e. the radial direction of the limiting hole 520) to one side to make the limiting piece 440 horizontally inserted into the foot 500, and the limiting piece 440 and the foot 500 are limited in the vertical direction, at this time, the bottom of the limiting piece 440 extends out of the limiting hole 520, the clamping piece 530 at the bottom of the foot 500 is clamped with the part of the limiting piece 440 extending out of the limiting hole 520, and the assembly is completed, so that the limiting piece 440 is horizontally inserted into the foot 500 at the side of the limiting hole 520 under the pulling of the clamping piece 530. The horizontally inserted limiting piece 440 and the foot 500 can limit the lifting column 400 and the foot 500 in the vertical direction to avoid the lifting column 400 and the foot 500 from shaking or separating in the vertical direction, and further ensure the stable locking of the lifting column 400 and the foot 500. When disassembling, the clamping piece 530 is only needed to be separated from the limiting piece 440, and then the lifting column 400 can be moved to make the limiting piece 440 separated from the limiting hole 520, and the operation is simple and convenient. The clamping piece 530 and the limiting piece 440 are stably locked, and the lifting column 400 and the foot 500 can be assembled without the aid of tools, the operation is simple and convenient, the assembly difficulty is greatly reduced, the user can independently disassemble and assemble, and the use experience of the user is improved.

[0086] In the embodiment, the limiting piece 440 comprises a connecting portion 441 and a limiting portion 442. The connecting portion 441 extends vertically downward from the bottom of the lifting column 400. The limiting portion 442 is integrally arranged with the connecting portion 441 and extends horizontally from one side of the bottom of the connecting portion 441, so that the limiting piece 440 has an "L" shape structure. During the insertion of the limiting piece 440 into the limiting hole 520, the limiting portion 442 and the connecting portion 441 are inserted into the limiting hole 520 until the bottom of the lifting column 400 abuts against the top of the footing 500. At this time, the bottom end of the connecting portion 441 and the top of the limiting portion 442 are both below the limiting hole 520. Then, the limiting piece 440 is translated in the extending direction of the limiting portion 442 until the side wall of the connecting portion 441 abuts against the inner wall of the limiting hole 520. At this time, the bottom surface of the footing 500 abuts against the top surface of the limiting portion 442, and the top surface of the footing 500 abuts against the bottom surface of the lifting column 400, so as to realize the horizontal insertion between the limiting piece 440 and the footing 500. Finally, the clamping piece 530 is clamped on the side of the connecting portion 441 away from the limiting portion 442, so as to apply a force to the connecting portion 441 by the clamping piece 530 towards the direction of the limiting piece 440, so that the position of the limiting piece 440 is always kept below the side of the footing 500 of the limiting hole 520, that is, the abutment between the limiting portion 442 and the ground of the footing 500 is kept. The arrangement of the connecting portion 441 not only can limit the horizontal insertion between the limiting piece 440 and the footing 500, but also facilitates the user to check whether the insertion of the limiting piece 440 into the limiting hole 520 is in place, so as to clamp the clamping piece 530 on the limiting piece 440.

[0087] In order to ensure the stable clamping of the clamping piece 530 on the connecting portion 441, as shown in the embodiment, a clamping groove 443 is arranged on the side of the connecting portion 441 away from the limiting portion 442. The clamping piece 530 cooperates with the clamping groove 443 to limit the clamping piece 530 clamped on the limiting piece 440, so as to avoid the free disengagement of the clamping piece 530 and the limiting piece 440 due to vibration and the like. The clamping effect of the clamping piece 530 on the limiting piece 440 is good, so that the limiting piece 440 can be stably inserted into the footing 500, so as to stably lock the installation of the lifting column 400 and the footing 500. Figure 21

[0088] As shown in the embodiment, the clamping piece 530 comprises a clamping body 531 and a clamping handle 532. The clamping body 531 is arranged on the side of the connecting portion 441 away from the limiting portion 442. The clamping handle 532 is arranged on the clamping body 531 and is used to clamp the clamping piece 530 on the connecting portion 441. The clamping body 531 is arranged on the connecting portion 441, so that the clamping piece 530 is clamped on the connecting portion 441, and the clamping handle 532 is arranged on the clamping body 531, so that the clamping piece 530 can be clamped on the connecting portion 441 by the clamping handle 532. The clamping piece 530 is clamped on the connecting portion 441, so that the clamping piece 530 can apply a force to the connecting portion 441 towards the direction of the limiting piece 440, so that the position of the limiting piece 440 is always kept below the side of the footing 500 of the limiting hole 520, that is, the abutment between the limiting portion 442 and the ground of the footing 500 is kept. Figure 21 ​As shown, in the present embodiment, a horizontally extending plug-in protrusion 444 is further arranged on one side of the connecting portion 441, the plug-in protrusion 444 is located directly above the limiting portion 442, that is, the plug-in protrusion 444 coincides with the projection of the limiting protrusion on the horizontal plane, when the limiting piece 440 is clamped with the clamping piece 530, the plug-in protrusion 444 is plugged into the inner wall of the limiting hole 520, by arranging the plug-in protrusion 444, the connecting portion 441 can be plugged into the footing 500 through the limiting portion 442 and the plug-in protrusion 444 at the same time, and the horizontal plugging effect between the limiting piece 440 and the footing 500 is better, when the lifting column 400 is subjected to a horizontal thrust, the limiting portion 442 and the plug-in protrusion 444 can disperse the force, avoiding the thrust concentrated at the connection between the connecting portion 441 and the limiting portion 442 to cause rupture. In another embodiment, the limiting piece can only include the connecting portion, and does not include the limiting portion, the plug-in protrusion is arranged on the connecting portion and plugs into the footing, and the clamping piece clamps the part of the connecting portion protruding from the limiting hole.

[0089] The footing 500 in the present embodiment includes an upper shell 511 and a lower shell 512, the upper shell 511 covers the upper shell 511 to form a base 510, and a mounting gap 513 is formed between the upper shell 511 and the lower shell 512, when the limiting piece 440 is clamped with the clamping piece 530, the plug-in protrusion 444 is plugged into the mounting gap 513, the top surface of the plug-in protrusion 444 abuts against the bottom surface of the upper shell 511, and the bottom surface of the plug-in protrusion 444 abuts against the top surface of the lower shell 512, the combined structure of the upper shell 511 and the lower shell 512 enhances the thickness and strength of the footing 500, and the gap formed between the two can also be used to plug in the plug-in protrusion 444, without opening a hole in the footing 500, horizontal plugging of the plug-in protrusion 444 can be realized, further enhancing the limiting effect of the footing 500 on the limiting piece 440, making the installation of the lifting column 400 on the footing 500 more stable. The support protrusions 540 are arranged at both ends of the strip-shaped base 510, the support protrusions 540 are located on the bottom surface of the base 510, when the table frame is placed on the ground, the support protrusions 540 support the base 510 to form an avoidance gap 550 below the base 510, avoiding the clamping piece 530 installed at the bottom of the base 510, avoiding damage to the clamping piece 530 caused by the extrusion of the base 510 and the ground, and also avoiding the clamping piece 530 affecting the stable support of the footing 500 on the lifting column 400.

[0090] In the embodiment, the structure of the clamping piece 530 is the same as that of the first locking piece 260, the clamping piece 530 comprises a positioning block 531 and a clamping ring 532, the positioning block 531 is fixed at the bottom of the footing 500 and is located at one side of the connecting portion 441 provided with the limiting portion 442, one end of the clamping ring 532 is rotationally connected to the positioning block 531, after the limiting piece 440 and the footing 500 are horizontally inserted into position, the clamping ring 532 is rotated, so that the other end of the clamping ring 532 is sleeved on the limiting piece 440, the inner circle of the clamping ring 532 abuts against the inner wall of the clamping groove 443, so as to pull the limiting piece 440 to the direction of the positioning block 531 (i.e. the direction of the limiting portion 442), so that the connecting portion 441 and the limiting portion 442 abut against the footing 500, thereby stably keeping the limiting piece 440 and the footing 500 in the horizontally inserted state. Preferably, the positioning block 531 and the footing 500 are in a split structure, the positioning block 531 is locked on the footing 500 by screws, which reduces the production and processing difficulty of the footing 500, and when the clamping piece 530 is damaged, the clamping piece 530 can be removed for separate replacement, thereby reducing the maintenance cost.

[0091] The limiting piece 440 is provided with at least one, and in the embodiment, preferably, the limiting piece 440 is provided with multiple (two or more), the limiting holes 520 on the footing 500 are one-to-one correspondingly arranged with the limiting pieces 440, when the lifting column 400 and the footing 500 are in the assembled state, the limiting pieces 440 are one-to-one correspondingly inserted into the limiting holes 520, so as to enhance the connection strength between the lifting column 400 and the footing 500 by the multiple limiting pieces 440, so that the connection between the two is more firm, and the fracture of the connection between the lifting column 400 and the footing 500 is avoided. The clamping piece 530 can be provided with one or multiple (two or more), each clamping piece 530 is clamped with any one limiting piece 440 or multiple limiting pieces 440 at the same time, so as to realize the locking of the lifting column 400 and the footing 500, which is simple and convenient to operate, and the clamping groove 443 can be arranged only on the limiting piece 440 used for cooperating with the clamping piece 530, or can be arranged on each limiting piece 440 at the same time.

[0092] The limiting piece 440 can be integrally arranged with the bottom of the lifting column 400, or can be arranged in a split structure, and in the embodiment, preferably, as shown in Figure 20 the limiting piece 440 is detachably connected with the lifting column 400, when the limiting piece 440 is damaged, the limiting piece 440 can be replaced alone, without the need to replace the lifting column 400 together, thereby reducing the maintenance cost. Of course, in another embodiment, only the limiting piece used for cooperating with the clamping piece can be detachably connected with the lifting column, and the other limiting pieces can be integrally arranged with the lifting column, because the limiting piece used for clamping the clamping piece is subjected to greater stress than the other limiting pieces, so the damage probability is higher, and the limiting piece used for cooperating with the clamping piece is detachably connected with the lifting column, so as to facilitate replacement when damaged.

[0093] Embodiment two:

[0094] The utility model still provides a lift table, like Figure 1 As shown, including table board 100 and install in the bottom of table board lift table frame, lift table frame is above mentioned lift table frame, crossbeam 200 and side beam 300 install in the bottom of table board 100, and lock up with table board 100 through screw.

[0095] The above only is the preferred implementation of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, all technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the utility model.

Claims

1. A lift table frame, characterized by, The utility model relates to a foldable lifting table frame, comprising: a crossbeam comprising a first crossbeam and a second crossbeam extending horizontally, the first crossbeam and the second crossbeam being rotatably connected, the first crossbeam and the second crossbeam being rotatable to switch between a coaxial use state and a folded state; two groups of side beams, each group of side beams being horizontally arranged at the two ends of the crossbeam, each group of side beams comprising a first side beam and a second side beam, the first side beam and the second side beam being rotatably connected to the crossbeam, the first side beam and the second side beam being rotatable to switch between a perpendicular use state and a folded state; two lifting columns, each lifting column being vertically arranged at the two ends of the crossbeam to drive the crossbeam to lift, the top of the lifting column being rotatably connected to the crossbeam, the two lifting columns being rotatable to fold relative to the crossbeam; a ground foot, which is detachably connected to the bottom of the lifting column, the ground foot extending horizontally to support the lifting column.

2. A table lift as claimed in claim 1, wherein: The lifting column comprises a sleeve assembly provided with a connecting plate and a lifting assembly arranged in the sleeve assembly to drive the sleeve assembly to extend and retract, the connecting plate being fixed to the top of the sleeve assembly to lift with the sleeve assembly, the sleeve assembly being rotatably connected to the crossbeam through the connecting plate.

3. A table lift as claimed in claim 2, wherein: When the lifting table frame is packed and stored, the crossbeam and the side beams are in the folded state, the lifting columns are folded relative to the crossbeam, the lifting columns and the crossbeam form a placing gap through the connecting plate, and the ground foot is detached from the lifting column and stored in the placing gap.

4. A table lift as claimed in claim 3, wherein: The top of the connecting plate is provided with a supporting groove matched with the crossbeam, the crossbeam is provided with a rotating shaft, the inner wall of the supporting groove is provided with a rotating shaft hole, and the rotating shaft is horizontally inserted into the rotating shaft hole to rotatably connect the connecting plate to the crossbeam.

5. A table lift as claimed in claim 4, wherein: The crossbeam is further provided with a clamping protrusion parallel to the rotating shaft, the inner wall of the supporting groove is provided with a clamping groove, the clamping groove comprises an installation part extending longitudinally to penetrate the top of the supporting groove and a stop part extending transversely from the bottom of the installation groove, and the clamping protrusion is clamped into the stop part to prevent the lifting column perpendicular to the crossbeam from rotating freely.

6. A table lift as claimed in claim 5, wherein: The bottom of the crossbeam and the connecting plate is respectively provided with a first locking member and a second locking member, the first locking member is locked with the second locking member to prevent the clamping protrusion from being detached from the stop part freely.

7. The table lift frame of claim 1, wherein: The first crossbeam and the second crossbeam are rotatably connected through a hinge assembly, the hinge assembly is detachably connected to the top of the first crossbeam and the second crossbeam, and the first crossbeam and the second crossbeam are rotatable upward to fold the crossbeam.

8. A table lift as claimed in claim 7, wherein: The bottom of the adjacent end of the first crossbeam and the second crossbeam is respectively provided with a third locking member and a fourth locking member, the third locking member is locked with the fourth locking member to keep the crossbeam in the use state.

9. A table lift as claimed in claim 7, wherein: The lifting table frame further comprises a telescopic assembly detachably connected between the first cross beam and the second cross beam, when the telescopic assembly is connected with the first cross beam and the second cross beam respectively, at least one of the first cross beam and the second cross beam is in sliding connection with the telescopic assembly, so that the cross beam is telescopic.

10. A table lift as claimed in claim 9, wherein: The telescopic assembly comprises a sliding member and a connecting member provided with sliding holes at two ends, the connecting member is covered on the end portions of the first cross beam and the second cross beam, the sliding member is fixed on the side portions of the first cross beam and the second cross beam and horizontally passes through the sliding holes, so as to be in sliding connection with the sliding holes.

11. A table height adjustment mechanism according to claim 1, wherein: The lifting table frame further comprises a controller for controlling the lifting of the lifting column, the cross beam is provided with a receiving groove with an opening facing the table top, the controller is arranged in the receiving groove, the bottom of the cross beam is further provided with an access opening, the access opening longitudinally penetrates the cross beam, so that the receiving groove is in communication with the outside through the access opening.

12. A table lift as claimed in claim 11, wherein: The bottom of the cross beam is further provided with a cover plate, the cover plate is detachably connected on the cross beam for covering the access opening.

13. A table lift as claimed in claim 12, wherein: The cover plate comprises a plate body, one end of the plate body is locked with the cross beam through a locking assembly, the other end of the plate body is provided with an inclined stopper, when the cover plate covers the access opening, the stopper extends into the receiving groove, and the lower surface of the stopper abuts against the cross beam.

14. A table lift as claimed in claim 13, wherein: The end of the plate body provided with the stopper is further provided with a stopper piece, when the cover plate covers the access opening, the stopper piece horizontally extends and abuts against the bottom surface of the cross beam.

15. A table height adjustment frame as claimed in claim 13, wherein: The locking assembly comprises a positioning member fixed in the receiving groove and a clamping member fixed on the plate body, the clamping member is provided with a clamping groove, the positioning member comprises a seat body provided with a positioning groove, a spring and a ball arranged in the positioning groove, the spring is used for partially pushing the ball into the clamping groove, so that the clamping member is clamped with the positioning member.

16. A table height adjustment frame as claimed in claim 1, wherein: The bottom of the lifting column is provided with a limiting member, the foot is provided with a limiting hole for penetrating the limiting member, the bottom of the foot is further provided with a clamping member, when the lifting column and the foot are in the assembled state, the lower end of the limiting member penetrates and extends out of the limiting hole to be clamped with the clamping member, the limiting member is horizontally inserted with the foot on the side of the limiting hole under the pulling of the clamping member.

17. A table lift as claimed in claim 16, wherein: The limiting member comprises a vertically extending connecting portion and a horizontally extending limiting portion, the limiting portion is arranged on one side of the bottom of the connecting portion, when the clamping member is clamped with the side of the connecting portion away from the limiting portion, the limiting portion abuts against the bottom surface of the foot on one side of the limiting hole.

18. A table lift as claimed in claim 16 or 17, characterized in that: One side of the limiting member is provided with an insertion protrusion, when the limiting member is clamped with the clamping member, the insertion protrusion is inserted with the inner wall of the limiting hole.

19. A table height adjustment frame as claimed in claim 16, wherein: The clamping member comprises a positioning block fixed on the bottom of the foot and a clamping ring rotationally connected on the positioning block, the clamping ring pulls the limiting member to the positioning block by being sleeved on the limiting member, so that the limiting member and the foot are kept in insertion.

20. A sit-stand desk comprising a desk top and a sit-stand desk frame mounted at the bottom of the desk top, characterized in that: The lifting table frame is any one of the lifting table frames in claims 1-19, the cross beam and the side beam are mounted on the bottom of the table top.

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