Mounting position adjustable structure and quick-lifting screw jack

Abstract

The utility model relates to a mounting position adjustable structure and a quick lifting screw type jack, and relates to the technical field of mechanical tools, the adjustable structure comprises a mounting seat, a plurality of clamping grooves, a plurality of clamping grooves and a plurality of clamping grooves, the mounting piece is provided with three connecting parts, the three connecting parts are distributed in a triangular shape in the length direction of the mounting base, the height of the triangle in the width direction of the mounting base is smaller than the width of the mounting base, at least one connecting part is detachably connected with the mounting piece, and after the detachable connecting part is detached, the mounting piece and the mounting base can be separated from each other; the connecting part comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are located on the two opposite sides of the mounting base in the width direction when the mounting piece is connected with the mounting base, the first connecting part is clamped in the clamping groove in the width direction of the mounting base, and the second connecting part abuts against the mounting base; and the mounting seat can be separated from the mounting piece by disassembling one connecting part, so that the mounting position of the mounting piece can be conveniently adjusted, and simplicity, convenience and rapidness are realized.

Description

Technical Field

[0001] The present application relates to the field of mechanical tools, and in particular to a screw jack with an adjustable installation position and a fast lifting and lowering structure. Background Art

[0002] A jack is a small and light lifting equipment that uses a rigid lifting piece as a working device and can lift heavy objects within a small stroke of the top support or the bottom support claws. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting and supporting work. They have a light and sturdy structure, are flexible and reliable, and can be carried and operated by one person.

[0003] Jacks are divided into mechanical jacks and hydraulic jacks. Among the mechanical jacks, screw jacks are more common. The lifting and lowering of the bracket is achieved by rotating the screw to push open the heavy objects to achieve lifting and support.

[0004] With respect to the above-mentioned related technologies, the inventors found that: the support base of the spiral jack has a slow lifting speed, and the screw is generally connected with a handle, a grip, etc., and the screw rotation is achieved by manual rotation, which makes the lifting efficiency low: for example, when the jack is used to lift a vehicle, the base of the jack is placed on the ground, and the support base needs to lift the vehicle chassis. Different vehicles have different chassis heights. When it is necessary to lift a vehicle with a higher chassis, it is necessary to first rotate the screw to make the support base rise to a certain height to abut and support the chassis. This stage is time-consuming, which makes the entire vehicle lifting efficiency low. Utility Model Content

[0005] In order to solve the above problems, the present application provides a structure with adjustable installation position and a fast-lifting spiral jack.

[0006] The present application provides an adjustable installation position structure using the following technical solution:

[0007] A structure with adjustable mounting position, comprising: a mounting seat, having a plurality of slots along its length direction; a mounting piece, having three connecting parts, the three connecting parts are distributed in a triangular shape along the length direction of the mounting seat, the height of the triangle along the width direction of the mounting seat is smaller than the width of the mounting seat, at least one connecting part is detachably connected to the mounting piece, and after the detachable connecting part is disassembled, the mounting piece and the mounting seat can be detached from each other; the connecting part comprises a first connecting part and a second connecting part, and when the mounting piece is connected to the mounting seat, the first connecting part and the second connecting part are located on opposite sides in the width direction of the mounting seat, the first connecting part is snapped into the slot along the width direction of the mounting seat, and the second connecting part abuts against the mounting seat.

[0008] By adopting the above technical solution, the mounting piece is connected to the mounting seat through three connecting parts in a triangular distribution, and the first connecting part of the connecting part is inserted into the slot on the mounting seat, and the second connecting part abuts against the mounting seat, thereby ensuring the stability of the connection structure between the mounting piece and the mounting seat;

[0009] In addition, at least one connecting portion is detachably connected to the mounting piece, and the triangular form of the three connecting portions can be released by removing the connecting portion, and the height of the triangle along the width direction of the mounting seat is less than the width of the mounting seat, so that the mounting piece can be disconnected from the mounting seat after the detachable connecting portion is removed. After the mounting piece is disconnected from the mounting seat, the position of the mounting piece can be adjusted along the length direction of the mounting seat, and the mounting piece can be reconnected to the mounting seat after the detachable connecting portion is reinstalled, thereby realizing rapid adjustment of the installation position of the mounting piece, which is simple, convenient and efficient.

[0010] Optionally, the slot has a groove at the notch of the slot for guiding the first connecting part.

[0011] By adopting the above technical solution, a groove is provided at the notch of the card slot, so that the first connecting part can be more smoothly inserted into or slid out of the card slot, which is convenient for operation.

[0012] Optionally, two first connection parts are provided, and one second connection part is provided, wherein one first connection part is detachably connected to the mounting member, and a distance between the other first connection part and the second connection part is greater than a width of the mounting seat;

[0013] Wherein: the spacing between the card slots is S, the spacing between the two first connecting parts is D, D=n*S, n≥1 and n is an integer.

[0014] By adopting the above technical solution, after the detachable first connecting part is disassembled, the mounting piece is separated from the mounting seat, and the mounting position of the mounting piece is adjusted along the length direction of the mounting seat, and the disassembled first connecting part is reinstalled on the mounting piece and snapped into the snap slot, thereby completing the reconnection of the mounting piece and the mounting seat. The operation is simple and convenient, and the efficiency of adjusting the mounting position of the mounting piece is high.

[0015] In addition, the quantitative relationship between the spacing between the slots and the spacing between the two first connecting parts enables the two first connecting parts to be inserted into the slots when the mounting member is in different mounting positions, thereby ensuring structural reliability.

[0016] Optionally, one first connection part is provided, and two second connection parts are provided, wherein one of the second connection parts is detachably connected to the mounting member, and a distance between the other second connection part and the first connection part is greater than a width of the mounting seat.

[0017] By adopting the above technical solution, after the detachable second connecting part is disassembled, the mounting piece is separated from the mounting seat, and the mounting position of the mounting piece is adjusted along the length direction of the mounting seat. The disassembled second connecting part is reinstalled on the mounting piece and abuts against the mounting seat, thereby completing the reconnection of the mounting piece and the mounting seat. The operation is simple and convenient, and the adjustment of the installation position of the mounting piece is efficient.

[0018] The present application also discloses a fast lifting screw jack adopting the following technical solution:

[0019] A fast-lifting spiral jack comprises: a base; a column fixed on the base; a screw rod threadedly connected to the column; a driving mechanism for driving the screw rod to rotate; a mounting shell for mounting the driving mechanism and rotating the connecting screw rod; and an adjustable mounting position structure as described above; wherein: the mounting seat is fixedly connected to the mounting shell, and the extension direction of the rotation axis of the screw rod is consistent with the length direction of the mounting seat.

[0020] By adopting the above technical solution, the above-mentioned adjustable installation position structure is applied to the fast-lifting screw jack, and the installation shell is lifted and lowered relative to the column by rotating the screw rod, and the mounting seat and the mounting member are lifted and lowered together with the installation shell, and the mounting member is used as a support seat of the jack to lift heavy objects;

[0021] Before the jack is used to lift a heavy object, the installation position of the mounting part on the mounting seat can be adjusted according to the initial height of the heavy object before lifting, so that the mounting part is as close as possible to the heavy object to be lifted and is located below the heavy object, that is, the initial height of the mounting part is adjusted, and then the screw rod is driven to rotate by the driving mechanism to realize the rising of the mounting part, thereby reducing the time from the beginning of the rising of the mounting part to the abutment of the mounting part against the heavy object, thereby realizing rapid lifting of the heavy object and improving the lifting efficiency of the jack.

[0022] Optionally, the driving mechanism includes a meshing driving gear and a driven gear, the screw is fixed to the driven gear, and a power input shaft is connected to the driving gear, and the power input shaft is used to connect to a handle or a motor.

[0023] By adopting the above technical solution, the power output shaft in the driving mechanism can be connected to the handle or the motor. After the power is input, the screw rotation is realized through gear transmission. The manual or electric drive jack can be selected according to the actual application scenario, and the application range is wide.

[0024] Optionally, the column includes: an inner column, fixedly connected to the base; an outer column, detachably fixedly connected to the inner column and threadedly connected to the screw; a fastener, used to fix the inner column and the outer column; wherein, along the rotation axis direction of the screw, the inner column has a plurality of mounting positions for installing the fasteners.

[0025] By adopting the above technical solution, the column is divided into an inner column and an outer column. The inner column has several installation positions along the axis of rotation of the screw. The outer column is installed to a suitable installation position height through fasteners according to actual use requirements, and the screw is threadedly connected to the outer column, that is, the initial height of the screw is adjusted, thereby adjusting the initial height of the mounting shell, the mounting seat and the mounting part, thereby further achieving the effect of adjusting the initial height of the mounting part.

[0026] Optionally, a nut for threaded connection with the screw rod is fixedly provided on the outer column.

[0027] By adopting the above technical solution, a nut is provided on the outer column for threaded connection with the screw rod. When the thread on the nut is damaged, the nut can be replaced or maintained without replacing or maintaining the entire outer column, thus saving maintenance costs.

[0028] Optionally, the mounting piece has a support platform.

[0029] By adopting the above technical solution, a support platform is provided so that the mounting member can provide better support for the heavy object when the heavy object is lifted.

[0030] Optionally, the mounting member has a limiting portion.

[0031] By adopting the above technical solution, the limiting part is provided to reduce the situation where the heavy object is separated from the mounting member when the mounting member abuts against the lifting heavy object.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. In the present application, an adjustable installation position structure is applied to the screw jack, and the initial height of the installation part is adjusted by adjusting the installation position of the installation part on the mounting seat, so as to reduce the distance between the installation part and the heavy object to be lifted and the time required to lift the installation part, thereby improving the lifting efficiency;

[0034] 2. In a further configuration of the present application, a groove is provided at the notch of the card slot so that the first connecting part can be inserted into or slid out of the card slot more smoothly;

[0035] 3. In a further configuration of the present application, the connection structure is stable and reliable through the provision of three connection parts and the clamping connection between the first connection part and the slot, and the abutment between the second connection part and the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional structural diagram of a mechanism with adjustable installation position;

[0037] Figure 2 yes Figure 1 Explosion diagram of

[0038] Figure 3 yes Figure 1 A side cross-sectional schematic diagram of ;

[0039] Figure 4 is a partial enlarged schematic diagram of the connection between the mounting member and the mounting seat in the first embodiment;

[0040] Figure 5 is a comparative schematic diagram of the connection state and the disconnection state of the mounting member and the mounting seat after the detachable first connecting portion is disassembled in the first embodiment;

[0041] Figure 6 is a partial enlarged schematic diagram of the connection between the mounting member and the mounting seat in the fourth embodiment;

[0042] Figure 7 is a comparative schematic diagram of the connection state and the disconnection state of the mounting member and the mounting seat after the detachable second connecting portion is disassembled in the fourth embodiment;

[0043] Figure 8 It is a three-dimensional structural diagram of a fast-lifting screw jack;

[0044] Fig. 9 yes Figure 8 Explosion diagram of

[0045] Fig.10 yes Figure 8 A side cross-sectional schematic diagram of ;

[0046] Fig.11 yes Fig.10 A is an enlarged schematic diagram.

[0047] Explanation of reference numerals: 1. mounting seat; 11. slot; 12. clamping plate; 13. groove; 2. mounting member; 21. connection portion; 211. first connection portion; 212. second connection portion; 22. side plate; 23. support platform; 231. position limiting portion; 3. base; 4. column; 41. inner column; 411. mounting position; 42. outer column; 421. nut; 43. fastener; 5. screw; 6. driving mechanism; 61. driving gear; 62. driven gear; 63. power transmission 1. Insert shaft; 7. Mounting shell; 8. Top cover; d. Width of mounting seat; h. Height of triangle along width direction of mounting seat; L1. Spacing between the second connection part and one of the first connection parts in embodiments one to three; L2. Spacing between the second connection part and another first connection part in embodiments one to three; L1'. Spacing between the first connection part and one of the second connection parts in embodiments four to six; L2'. Spacing between the first connection part and another second connection part in embodiments four to six. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0052] The following is combined with Figure 1-11 This application is described in further detail.

[0053] The present application embodiment discloses a structure with adjustable installation position, as shown in the attached Figure 1 To Attachment Figure 3 As shown, it includes a mounting seat 1 and a mounting member 2 that can be assembled and connected. The mounting seat 1 has a plurality of slots 11 distributed along its length direction. Specifically, the mounting seat 1 adopts a square pipe, and two clamping plates 12 are welded and fixed on the mounting seat 1 along its length direction. The two clamping plates 12 have the slots 11 distributed along the length direction of the mounting seat 1, which reduces the processing of the mounting seat 1 on the other pipe. In other embodiments, the slots 11 can also be directly processed on the mounting seat 1.

[0054] The mounting member 2 has three connecting parts 21, which are distributed in a triangular shape along the length direction of the mounting seat 1. The height of the triangle along the width direction of the mounting seat 1 is smaller than the width of the mounting seat 1, and at least one connecting part 21 is detachably connected to the mounting member 2. After the detachable connecting part 21 is detached, the mounting member 2 and the mounting seat 1 can be separated from each other, so as to facilitate the adjustment of the mounting position of the mounting member 2 relative to the mounting seat 1. The connecting part 21 includes a first connecting part 211 and a second connecting part 212. When the mounting member 2 is connected to the mounting seat 1, the first connecting part 211 and the second connecting part 212 are located on opposite sides of the width direction of the mounting seat 1. The first connecting part 211 is clamped to the clamping groove 11 along the width direction of the mounting seat 1, and the second connecting part 212 is abutted against the mounting seat 1. It should be noted that the connecting part 21 includes the first connecting part 211 and the second connecting part 212, which means that there is at least one first connecting part 211 and at least one second connecting part 212.

[0055] The triangular distribution arrangement enables the mounting member 2 to be stably connected to the mounting seat 1, and at least one of the connecting portions 21 is detachable from the mounting member 2. After the connecting portion 21 is detached from the mounting member 2, the triangular stable structure is released, making it easy for the mounting member 2 to change its connection position with the mounting seat 1, which is convenient and quick.

[0056] In a further configuration, the mounting member 2 includes two side panels 22, and the connecting portion 21 is installed between the two side panels 22. When the mounting member 2 is connected to the mounting seat 1, the two side panels 22 are located on both sides of the mounting seat 1 in the thickness direction to eliminate the risk of the mounting member 2 falling off along the thickness direction of the mounting seat 1.

[0057] In addition, a groove 13 for guiding the first connecting portion 211 is provided at the notch of the slot 11 , so that the first connecting portion 211 can be easily inserted into or removed from the slot 11 , thereby making the position adjustment of the mounting member 2 smoother.

[0058] Regarding the arrangement of the three connecting parts 21, the present application specifically discloses the following embodiments:

[0059] Embodiment 1

[0060] Combined with Figure 4 , Attachment Figure 5 In this embodiment, there are two first connection parts 211 distributed in the upper and lower parts, and there is one second connection part 212. The first connection part 211 located at the upper part is plugged and installed with the side plate 22 in a detachable manner from the front and rear direction. The first connection part 211 and the second connection part 212 located at the lower part are fixed to the side plate 22 by welding, and the three connection parts 21 are all pinned. The distance between the first connection part 211 and the second connection part 212 located at the lower part needs to be greater than the width of the mounting seat 1. It should be noted that the width of the mounting seat 1 refers to the distance between the right end surface of the mounting seat 1 and the left end surface of the clamping plate 12.

[0061] The spacing between the card slots 11 is S, and the spacing between the two first connection portions 211 is D, where D=n*S, n≥1 and n is an integer, and in this embodiment, n=1.

[0062] After the upper first connection portion 211 is disassembled and separated from the side panel 22, the entire mounting member 2 can rotate around the lower first connection portion 211 to disengage the second connection portion 212 from the mounting seat 1. At this time, the lower first connection portion 211 can be disengaged from the slot 11 to achieve the disengagement of the mounting member 2 from the mounting seat 1. Since the distance between the lower first connection portion 211 and the second connection portion 212 is greater than the width of the mounting seat 1, the mounting member 2 can be moved up and down relative to the mounting seat 1 to adjust its position.

[0063] After adjusting the position of the mounting member 2, the first connecting portion 211 at the bottom is re-inserted into the slot 11 corresponding to the current mounting position, and then the mounting member 2 is rotated around the first connecting portion 211 at the bottom so that the second connecting portion 212 abuts against the mounting seat 1 again, and finally the first connecting portion 211 at the top is reinserted into the mounting member 2 and inserted into the slot 11, thereby completing the connection between the mounting member 2 and the mounting seat 1 again.

[0064] Embodiment 2

[0065] The difference from the first embodiment is that the first connection part 211 at the bottom and the side panel 22 are detachably plugged in the front-to-back direction, and the first connection part 211 and the second connection part 212 at the top are fixed to the side panel 22 by welding; and the distance between the first connection part 211 and the second connection part 212 at the top needs to be greater than the width of the mounting base 1.

[0066] Embodiment 3

[0067] The difference from the first embodiment is that the second connection part 212 and the side plate 22 are plug-in-installed in a detachable manner from the front-to-back direction, and the two first connection parts 211 and the side plate 22 are fixed by welding.

[0068] In this embodiment, before adjusting the position of the mounting member 2, the second connecting portion 212 is disassembled and separated from the side panel 22. At this time, the mounting member 2 can be directly disassembled and separated to the left relative to the mounting seat 1. After the mounting member 2 is adjusted to a suitable position and the two first connecting portions 211 are inserted into the card slots 11, the second connecting portion 212 is reinserted into the side panel 22 to complete the reconnection of the mounting member 2 and the mounting seat 1.

[0069] Embodiment 4

[0070] Combined with Figure 6 , Attachment Figure 7, which is different from the first embodiment, in that: in this embodiment, the first connection part 211 has one, and the second connection part 212 has two, which are distributed up and down. The second connection part 212 located at the top is detachably plugged and installed with the side plate 22 from the front-to-back direction, and the second connection part 212 located at the bottom and the first connection part 211 are both welded and fixed to the side plate 22, and the distance between the second connection part 212 located at the bottom and the first connection part 211 needs to be greater than the width of the mounting base 1.

[0071] After the upper second connection portion 212 is disassembled and separated from the side plate 22, the entire mounting member 2 can rotate around the first connection portion 211, so that the second connection portion 212 located below is disengaged from the mounting seat 1. At this time, the first connection portion 211 can be disengaged from the slot 11, thereby realizing the disengagement of the mounting member 2 from the mounting seat 1. Since the distance between the second connection portion 212 located below and the first connection portion 211 is greater than the width of the mounting seat 1, the mounting member 2 can be moved up and down relative to the mounting seat 1 to adjust its position.

[0072] After adjusting the position of the mounting member 2, the first connecting portion 211 is re-inserted into the slot 11 corresponding to the current mounting position, and the mounting member 2 is then rotated around the first connecting portion 211 so that the second connecting portion 212 below is re-contacted with the mounting seat 1, and finally the second connecting portion 212 above is reinserted into the mounting member 2 and abutted against the mounting seat 1, thereby completing the connection between the mounting member 2 and the mounting seat 1.

[0073] Embodiment 5

[0074] The difference from the fourth embodiment is that in this embodiment, the second connection part 212 located at the bottom is installed with the side panel 22 by detachable plug-in, the second connection part 212 located at the top and the first connection part 211 are fixed with the side panel 22 by welding, and the distance between the second connection part 212 located at the top and the first connection part 211 is greater than the width of the mounting base 1.

[0075] Embodiment 6

[0076] The difference from the fourth embodiment is that the first connection part 211 and the side plate 22 are plug-in mounted in a detachable manner from the front-to-back direction, and the two second connection parts 212 and the side plate 22 are fixed by welding.

[0077] In this embodiment, before adjusting the position of the mounting member 2, the first connecting portion 211 is disassembled and separated from the side panel 22. At this time, the mounting member 2 can be directly disassembled and separated to the right relative to the mounting seat 1. After the mounting member 2 is adjusted to a suitable position and the two second connecting portions 212 are abutted against the mounting seat 1, the first connecting portion 211 is reinserted into the side panel 22 to complete the reconnection of the mounting member 2 and the mounting seat 1.

[0078] Embodiment 7

[0079] In this embodiment, two of the three connection parts 21 are detachably plugged into the side panel 22 from the front-to-back direction, and the remaining connection part 21 is the first connection part 211 and is fixed to the side panel 22 by welding. The number of the first connection part 211 and the second connection part 212 among the three connection parts 21 can be the number in Example 1 or Example 4.

[0080] Before adjusting the position of the mounting member 2, the two detachable connecting parts 21 are removed and separated from the side plate 22, and the mounting member 2 can be detached from the mounting seat 1. After adjusting the installation position of the mounting member 2, the welded first connecting part 211 is re-inserted into the slot 11, and then the two disassembled connecting parts 21 are reinserted into the side plate 22, and the mounting member 2 and the mounting seat 1 can be reconnected.

[0081] Embodiment 8

[0082] The difference from the seventh embodiment is that the remaining connection portion 21 is a second connection portion 212 and is fixed to the side plate 22 by welding.

[0083] Before adjusting the position of the mounting member 2, the two detachable connecting parts 21 are removed and separated from the side plate 22, and the mounting member 2 can be detached from the mounting seat 1. After adjusting the installation position of the mounting member 2, the welded second connecting part 212 is re-connected to the mounting seat 1, and then the two disassembled connecting parts 21 are reinserted into the side plate 22, and the mounting member 2 and the mounting seat 1 can be reconnected.

[0084] Embodiment 9

[0085] The difference from the seventh embodiment is that in this embodiment, the three connecting parts 21 are connected to the side panel 22 by a detachable plug-in installation. Before the mounting member 2 adjusts the installation position, the three connecting parts 21 are disassembled and separated. After the mounting member 2 adjusts the position, the three connecting parts 21 are re-plugged into the side panel 22 to complete the reconnection of the mounting member 2 and the mounting seat 1.

[0086] The present application also discloses a fast lifting screw jack, Figure 8 To Attachment Fig.11 , which includes a base 3, a column 4, a screw 5, a driving mechanism 6, a mounting shell 7 and an adjustable installation position structure of any of the above embodiments, wherein: the column 4 is fixed on the base 3, the screw 5 is threadedly connected to the column 4, the driving mechanism 6 is used to drive the screw 5 to rotate, the mounting shell 7 is used to install the driving mechanism 6 and is rotatably connected to the screw 5, the mounting seat 1 is fixedly connected to the mounting shell 7, and the extension direction of the rotation axis of the screw 5 is consistent with the length direction of the mounting seat 1.

[0087] In this embodiment, the adjustable installation position structure in embodiment 1 is adopted, the mounting shell 7 is fixed on the top of the mounting seat 1, the extension direction of the rotation axis of the screw 5 and the length direction of the mounting seat 1 are both vertical directions, and a support platform 23 and a limiting portion 231 are provided on the mounting member 2 to improve the support and anti-slip performance of the mounting member 2 serving as a bracket.

[0088] The screw rod 5 is driven to rotate by the driving mechanism 6. Since the screw rod 5 is threadedly connected to the column 4 and is rotatably connected to the mounting shell 7, and the column 4 remains stationary with the base 3, the rotation of the screw rod 5 will cause the screw rod 5 to rise and fall relative to the column 4, thereby driving the mounting shell 7 to rise and fall, thereby driving the mounting seat 1 and the mounting part 2 connected to the mounting seat 1 to rise and fall, and the mounting part 2 is used as a support seat of a jack to lift heavy objects.

[0089] Based on the initial height of the heavy object, the installation position of the mounting member 2 on the mounting seat 1 can be adjusted so that the mounting member 2 can keep in contact with the heavy object as much as possible before it is raised or lowered with the mounting seat 1 and the mounting shell 7, thereby reducing the time before the mounting member 2 contacts the heavy object and improving the lifting efficiency.

[0090] The driving mechanism 6 includes a meshing driving gear 61 and a driven gear 62, the screw 5 is fixed to the driven gear 62, and a power input shaft 63 is connected to the driving gear 61, and the power input shaft 63 is used to connect a handle or a motor. In this embodiment, the power input mode of the driving mechanism 6 can be selected from human input or electric input, and the driving mode is diversified and has a wide range of applications.

[0091] In fact, the driving mechanism 6 can adopt a suitable power transmission structure to transmit power to the screw 5.

[0092] In addition, a top cover 8 is detachably mounted on the mounting shell 7 . The top cover 8 protects the driving mechanism 6 , and it is convenient to replace and maintain the parts of the driving mechanism 6 after the top cover 8 is removed.

[0093] In a further configuration, the column 4 includes an inner column 41, an outer column 42 and a fastener 43. The inner column 41 and the outer column 42 both adopt a central control square tube, wherein: the inner column 41 is fixedly connected to the base 3, the outer column 42 is sleeved on the outside of the inner column 41 and the mounting seat 1 is sleeved on the outside of the outer column 42, the outer column 42 is detachably fixedly connected to the inner column 41 by the fastener 43, and the outer column 42 is threadedly connected to the screw 5. Along the direction of the rotation axis of the screw 5, that is, in the vertical direction, the inner column 41 has a plurality of mounting positions 411 for installing the fastener 43.

[0094] Specifically, the fastener 43 adopts a pin, and through holes for inserting the pin are opened on the inner column 41 and the outer column 42, wherein a plurality of through holes are opened in the vertical direction on the inner column 41 as installation positions 411, and a through hole is opened on the outer column 42 for inserting the fastener 43. The fastener 43 can limit the lowest position of the mounting seat 1.

[0095] When the initial height of the heavy object to be lifted is high, the initial installation position of the fastener 43 and the outer column 42 can be adjusted to increase the lowest position of the mounting seat 1, thereby increasing the height of the mounting member 2, and the mounting member 2 can be adjusted on the mounting seat 1 to achieve two-level height adjustment of the mounting member 2, thereby improving the scope of application. The screw rod 5 is threadedly connected to the outer column 42, so that when the initial installation position of the fastener 43 and the outer column 42 is adjusted, the threaded connection relationship between the screw rod 5 and the outer column 42 is maintained, thereby improving the structural reliability.

[0096] In a further configuration, a nut 421 is fixedly provided on the outer column 42 for threaded connection with the screw rod 5. The nut 421 is fixed on the inner side of the outer column 42 and can be fixed by welding or rivets. In other embodiments, threads threadedly connected with the screw rod 5 can also be processed on the outer column 42, but the threads are easily damaged. In this embodiment, an additional nut 421 is used for threaded connection, which is also convenient for subsequent maintenance and replacement after the threads are damaged, avoiding the need to maintain and replace the entire outer column 42, saving maintenance costs.

[0097] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A structure with adjustable installation position, characterized in that: include: The mounting seat (1) is provided with a plurality of slots (11) along its length direction; the mounting member (2) has three connecting parts (21), the three connecting parts (21) are distributed in a triangular shape along the length direction of the mounting seat (1), the height of the triangle along the width direction of the mounting seat (1) is less than the width of the mounting seat (1), at least one of the connecting parts (21) is detachably connected to the mounting member (2), and after the detachable connecting part (21) is detached, the mounting member (2) and the mounting seat (1) can be separated from each other; the connecting part (21) comprises a first connecting part (211) and a second connecting part (212), when the mounting member (2) is connected to the mounting seat (1), the first connecting part (211) and the second connecting part (212) are located on opposite sides of the width direction of the mounting seat (1), the first connecting part (211) is clamped to the slot (11) along the width direction of the mounting seat (1), and the second connecting part (212) is in contact with the mounting seat (1).

2. The installation position adjustable structure according to claim 1, characterized in that: The notch of the clamping slot (11) is provided with a groove (13) for guiding the first connecting portion (211).

3. The installation position adjustable structure according to claim 1, characterized in that: Two first connection parts (211) are provided, and one second connection part (212) is provided, wherein one of the first connection parts (211) is detachably connected to the mounting member (2), and the distance between the other first connection part (211) and the second connection part (212) is greater than the width of the mounting seat (1); wherein: the distance between the card slots (11) is S, and the distance between the two first connection parts (211) is D, where D=n*S, n≥1 and n is an integer.

4. The installation position adjustable structure according to claim 1, characterized in that: One first connection part (211) is provided, and two second connection parts (212) are provided, wherein one of the second connection parts (212) is detachably connected to the mounting member (2), and the distance between the other second connection part (212) and the first connection part (211) is greater than the width of the mounting seat (1).

5. A fast lifting screw jack, characterized in that: include: A base (3); a column (4) fixed on the base (3); a screw (5) threadedly connected to the column (4); a driving mechanism (6) for driving the screw (5) to rotate; a mounting shell (7) for mounting the driving mechanism (6) and rotatably connecting the screw (5); and, an adjustable mounting position structure according to any one of claims 1 to 4; wherein: the mounting seat (1) is fixedly connected to the mounting shell (7), and the extension direction of the rotation axis of the screw (5) is consistent with the length direction of the mounting seat (1).

6. The fast lifting screw jack according to claim 5, characterized in that: The driving mechanism (6) comprises a meshing driving gear (61) and a driven gear (62), the screw rod (5) is fixed to the driven gear (62), the driving gear (61) is connected to a power input shaft (63), and the power input shaft (63) is used to connect to a handle or a motor.

7. The fast lifting screw jack according to claim 5, characterized in that: The column (4) comprises: an inner column (41) fixedly connected to the base (3); an outer column (42) detachably fixedly connected to the inner column (41) and threadedly connected to the screw rod (5); a fastener (43) for fixing the inner column (41) and the outer column (42); wherein, along the rotation axis direction of the screw rod (5), the inner column (41) has a plurality of mounting positions (411) for mounting the fastener (43).

8. The fast lifting screw jack according to claim 7, characterized in that: The outer column (42) is fixedly provided with a nut (421) for threaded connection with the screw rod (5).

9. The fast lifting screw jack according to claim 5, characterized in that: The mounting member (2) is provided with a support platform (23).

10. The fast lifting screw jack according to claim 5, characterized in that: The mounting member (2) is provided with a limiting portion (231).

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