Compound lifting device

Abstract

The present application relates to the technical field of lifting equipment, and especially relates to a composite lifting force lifting device. The composite lifting force lifting device comprises a power mechanism arranged on a base; the power mechanism comprises a driving piece, a transmission piece, a driving seat, a first auxiliary rod and a second auxiliary rod; the driving piece drives the driving seat to reciprocate along the horizontal direction through the transmission piece; one end of the first auxiliary rod is hinged to the driving seat, the other end of the first auxiliary rod is hinged to one end of the second auxiliary rod, and the other end of the second auxiliary rod is connected with a scissor mechanism; an inclined surface structure is arranged on the driving seat; when the lifting plate is at the lowest position, an included angle is formed between the first auxiliary rod and the second auxiliary rod; when the lifting plate is at the lifting position, the first auxiliary rod and the second auxiliary rod are both in the horizontal state; during the lifting process, when the lifting plate is between the lowest position and the lifting position, the lifting piece can move along the inclined surface structure relative to the driving seat; and when the lifting plate is between the lifting position and the highest position, the lifting piece can be separated from the inclined surface structure.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a composite lifting device. Background Technology

[0002] Currently, the scissor lift devices used in the market are mainly of vertical drive, tilt drive, and horizontal drive types. Vertical drive and tilt drive scissor lift devices operate vertically, occupying relatively large vertical space and making them unsuitable for applications requiring a low initial height. Horizontal drive scissor lift devices occupy less vertical space, but require a higher power unit for lower initial heights. Therefore, the use of existing scissor lift devices is limited. Summary of the Invention

[0003] The purpose of this invention is to provide a composite lifting device to address, to some extent, the technical problems existing in the prior art where vertical drive scissor lift devices and tilt drive scissor lift devices occupy relatively large spaces, and horizontal drive scissor lift devices require large power units at lower initial heights, thus limiting the use of scissor lift devices.

[0004] This invention provides a composite lifting device, comprising: a base; a scissor mechanism, the lower part of which is connected to the base, the scissor mechanism including a lifting member; a lifting plate connected to the upper part of the scissor mechanism; and a power mechanism disposed on the base. The power mechanism includes a driving member, a transmission member, a driving seat, a first auxiliary rod, and a second auxiliary rod. The driving member drives the driving seat to reciprocate horizontally via the transmission member. One end of the first auxiliary rod is hinged to the driving seat, and the other end of the first auxiliary rod is connected to one end of the second auxiliary rod. The second auxiliary rod is hinged, and the other end of the second auxiliary rod is connected to the scissor mechanism; the drive seat is provided with an inclined structure; when the lifting plate is in the lowest position, an angle is formed between the first auxiliary rod and the second auxiliary rod; when the lifting plate is in the lifting position, both the first auxiliary rod and the second auxiliary rod are in a horizontal state; during the lifting process, when the lifting plate is between the lowest position and the lifting position, the lifting member can move relative to the drive seat along the inclined structure; when the lifting plate is between the lifting position and the highest position, the lifting member can disengage from the inclined structure.

[0005] The composite lifting device provided by this invention can meet the requirements of a small initial height, a large lifting height, and a large load. It can be applied to occasions requiring a small initial height, a large lifting height, and a large load. The composite lifting device provided by this invention can effectively improve the situation of excessive local stress on the device, reduce the space occupied by the device, and improve the life of key components.

[0006] Furthermore, the scissor lift mechanism includes a first scissor bar and a second scissor bar, which are hinged together by a connecting shaft that forms the lifting member; the inclined surface structure is disposed on the surface of the drive seat away from the base; the lower end of the first scissor bar is hinged to the base, and the upper end of the first scissor bar is slidably connected to the lifting plate; the lower end of the second scissor bar is slidably connected to the base, and the upper end of the second scissor bar is hinged to the lifting plate; the drive seat is hinged to the first scissor bar, and the second auxiliary rod is hinged to the second scissor bar.

[0007] Furthermore, a limiting component is provided between the second auxiliary rod and the base. When the lifting plate descends from the highest position to the lifting position, the limiting component restricts the second auxiliary rod from moving in the horizontal direction, so that the first auxiliary rod rotates relative to the second auxiliary rod, and the second auxiliary rod rotates relative to the second scissor bar.

[0008] Furthermore, the limiting component includes a limiting hook and a limiting groove. The limiting hook is fixed on the second auxiliary rod, and the limiting groove is disposed on the base. The limiting hook can move along the limiting groove, and when the lifting plate is located at the lifting position, at the lowest position, and between the lowest position, the limiting hook is located at the end of the limiting groove.

[0009] Furthermore, the first auxiliary rod is located between the drive seat and the second auxiliary rod.

[0010] Furthermore, a guide block is fixed to the bottom of the drive seat, and a guide groove is provided on the base. The guide block slides in the guide groove along the movement direction of the drive seat.

[0011] Furthermore, the lifting plate is provided with an upper sliding groove, and the upper end of the first scissor bar slides in the upper sliding groove along the movement direction of the drive seat; the upper sliding groove can limit the upper end of the first scissor bar in the height direction.

[0012] Furthermore, the base is provided with a lower sliding groove, the second scissor bar is fixed with a first sliding plate, and the drive seat is provided with a second sliding plate. Both the first and second sliding plates are slidably disposed in the lower sliding groove along the movement direction of the drive seat. The lower sliding groove can limit the first and second sliding plates in the height direction.

[0013] Furthermore, in the width direction of the base, the first scissor bar and the second scissor bar are symmetrically arranged on both sides of the base, and both connecting shafts are capable of moving along the inclined structure.

[0014] Furthermore, the driving component is a motor, and the transmission component includes a lead screw and a lead screw nut; along the movement direction of the driving seat, a front support seat and a rear support seat are spaced apart on the base, the motor is located on the side of the front support seat away from the rear support seat, and the two ends of the lead screw are rotatably connected to the front support seat and the rear support seat respectively; the motor is driven by the lead screw to drive the lead screw to rotate, the lead screw nut is sleeved on the lead screw, and the driving seat is fixedly connected to the lead screw nut.

[0015] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the composite lifting device of the present invention in its lowest position from a first-view perspective.

[0018] Figure 2 for Figure 1 The diagram shown is a structural schematic from a second perspective when the composite lifting device is in its lowest position.

[0019] Figure 3 for Figure 1 The diagram shows the structure of the power mechanism when the composite lifting device is in its lowest position.

[0020] Figure 4 This is a schematic diagram of the composite lifting device of the present invention in the lifting position from a first-view perspective.

[0021] Figure 5 for Figure 4 The diagram shown is a structural schematic of the composite lifting device in the lifting position from a second perspective.

[0022] Figure 6 for Figure 4 The diagram shown is a third-view structural schematic of the composite lifting device in the lifting position.

[0023] Figure 7 for Figure 4 The diagram shows the structure of the scissor mechanism and power mechanism of the composite lifting device when it is in the lifting position.

[0024] Figure 8 This is a schematic diagram of the composite lifting device of the present invention in its highest position from a first-view perspective.

[0025] Figure 9 for Figure 8 The diagram shown is a structural schematic from a second perspective when the composite lifting device is in its highest position.

[0026] Figure 10 for Figure 8 The diagram shown is a third-person view of the composite lifting device at its highest position.

[0027] Icons: 1-Base; 2-Scissor lift mechanism; 3-Lifting plate; 4-Power mechanism; 101-Limit groove; 102-Guide groove; 103-Lower slide groove; 104-Stop bar; 105-Front support seat; 106-Rear support seat; 107-Lower fixed seat; 201-First scissor lift; 202-Second scissor lift; 203-Connecting shaft; 204-Upper roller; 205-Busset; 301-Upper slide groove; 302-Upper fixed seat; 401-Drive component; 402-Lead screw; 403-Drive seat; 404-First auxiliary rod; 405-Second auxiliary rod; 406-Inclined structure; 407-Limit hook; 408-Guide block; 409-First slide plate; 410-Second slide plate; 411-Lead nut; 412-Coupling. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] It should be noted that the "horizontal direction" mentioned in the embodiments of the present invention refers to the horizontal direction as commonly considered under natural light conditions, and the "vertical direction" is the direction perpendicular to the "horizontal direction," which is also the vertical direction as commonly considered under natural conditions.

[0035] like Figures 1 to 10As shown, the present invention provides a composite lifting device comprising: a base 1; a scissor mechanism 2, the lower part of which is connected to the base 1, the scissor mechanism 2 including a lifting component; a lifting plate 3, which is connected to the upper part of the scissor mechanism 2; and a power mechanism 4, which is mounted on the base 1. The power mechanism 4 includes a driving component 401, a transmission component, a driving seat 403, a first auxiliary rod 404, and a second auxiliary rod 405. The driving component 401 drives the driving seat 403 to reciprocate along the horizontal direction (which can be understood as the length direction of the base) through the transmission component. One end of the first auxiliary rod 404 is hinged to the driving seat 403, and the other end of the first auxiliary rod 404 is connected to one end of the second auxiliary rod 405. The second auxiliary rod 405 is hinged to the other end of the scissor mechanism 2; the drive seat 403 is provided with an inclined structure 406; when the lifting plate 3 is in the lowest position, the first auxiliary rod 404 and the second auxiliary rod 405 form an angle, that is, the first auxiliary rod 404 and the second auxiliary rod 405 are both inclined relative to the horizontal direction; when the lifting plate 3 is in the lifting position, the first auxiliary rod 404 and the second auxiliary rod 405 are both in a horizontal state; during the lifting process, when the lifting plate 3 is between the lowest position and the lifting position, the lifting member can move relative to the drive seat 403 along the inclined structure 406; when the lifting plate 3 is between the lifting position and the highest position, the lifting member can disengage from the inclined structure 406.

[0036] It should be noted that the lowest position refers to the initial state of the composite lifting device, before lifting begins; the lifting position refers to the position where the lifting plate 3 is raised to a certain position via the inclined structure 406, facilitating the subsequent drive seat 403 to directly drive the first auxiliary rod 404 and the second auxiliary rod 405 to raise the scissor mechanism 2; and the highest position refers to the position where the lifting plate 3 can be raised to its highest point. "Low" and "high" are relative terms; with the base 1 as a reference, the lowest position is lower than the lifting position, and the lifting position is lower than the highest position.

[0037] The working process of the composite lifting device provided in this embodiment is as follows: When the composite lifting device is in its lowest position, the lifting component is located at the lowest point of the inclined structure 406. The driving component 401 drives the driving seat 403 to move horizontally through the transmission component. Relative to the driving seat 403, the lifting component moves along the inclined structure 406 from the lowest point of the inclined structure 406 to the higher point of the inclined structure 406. As a result, the lifting component drives the scissor mechanism 2 to rise, thereby driving the lifting plate 3 to rise. At the same time, the driving seat 403 drives the first auxiliary rod 404 to move, and the first auxiliary rod 404 drives the second auxiliary rod 405 to move. The first auxiliary rod 404 and the second auxiliary rod 405 move from the inclined structure 406 to the lower point of the inclined structure 406. The process transitions from an inclined state to a horizontal state. When the lifting plate 3 reaches the lifting position, both the first and second auxiliary plates are in a horizontal state. At this time, the lifting component is at the critical point of disengagement from the inclined structure 406. The drive component 401 continues to work, and the lifting plate 3 begins to move from the lifting position to the highest position. During this process, the lifting component disengages from the inclined structure 406, and both the first and second auxiliary rods 404 and 405 are in a horizontal state. The drive seat 403 drives the first auxiliary rod 404 to move, the first auxiliary rod 404 drives the second auxiliary rod 405 to move, and the second auxiliary rod 405 drives the scissor mechanism 2 to move to the set position, thereby lifting the lifting plate 3 to the set height.

[0038] It should be noted that the angle of the inclined structure 406 only needs to be sufficient to raise the lifting plate 3 to the lifting position. Most of the lifting work is still accomplished by the drive seat 403, the first auxiliary rod 404, and the second auxiliary rod 405. The height from the lowest position to the lifting position is much smaller than the height from the lifting position to the highest position.

[0039] In this embodiment, the drive member 401 drives the drive seat 403 to move horizontally, meaning the scissor mechanism 2 is driven horizontally. Therefore, the composite lifting device provided in this embodiment can achieve a lower initial height. Under the same load, compared to the drive seat 403 directly driving the connecting rod to raise the lifting plate 3 from the lowest position to the highest position, the composite lifting device provided in this embodiment uses the inclined structure 406 to raise the lifting plate 3 from the lowest position to the highest position. This requires significantly less power from the drive seat 403. In other words, with the same output power of the drive member 401, the composite lifting device provided in this embodiment can lift a larger load. During the process of raising the lifting plate 3 from the highest position, the drive member 401 drives the first auxiliary rod 404 and the second auxiliary rod 405 through the drive seat 403, thereby causing the scissor mechanism to rise. The first auxiliary rod 404 and the second auxiliary rod 405 can quickly amplify the moving distance of the drive seat 403 to many times the original distance, forming the lifting distance of the scissor mechanism 2, enabling the scissor mechanism 2 to achieve a larger lifting height more quickly.

[0040] Therefore, the composite lifting device provided in this embodiment can meet the requirements of a small initial height, a large lifting height, and a large load. It can be applied to occasions where a small initial height, a large lifting height, and a large load are required. The composite lifting device provided in this embodiment can effectively improve the situation of excessive local stress on the device, reduce the space occupied by the device, and improve the life of key components.

[0041] The lifting component can be a roller or ball bearing installed on the scissor mechanism 2.

[0042] As an alternative, such as Figures 1 to 10 As shown, the scissor lift mechanism 2 includes a first scissor lift 201 and a second scissor lift 202. The first scissor lift 201 and the second scissor lift 202 are hinged together by a connecting shaft 203, which forms a lifting member. The lower end of the first scissor lift 201 is hinged to the base 1, and the upper end of the first scissor lift 201 is slidably connected to the lifting plate 3. The lower end of the second scissor lift 202 is slidably connected to the base 1, and the upper end of the second scissor lift 202 is hinged to the lifting plate 3. The drive seat 403 is hinged to the first scissor lift 201, and the second auxiliary rod 405 is hinged to the second scissor lift 202.

[0043] In this embodiment, during the lifting process, the upper end of the first scissor bar 201 can move on the lifting plate 3 along the movement direction of the drive seat 403 (that is, the length direction of the base 1, which is bidirectional rather than unidirectional); the lower end of the second scissor bar 202 moves on the base 1 along the movement direction of the drive seat 403 (that is, the length direction of the base 1, which is bidirectional rather than unidirectional). The connecting shaft 203 forms a lifting component, which can reduce the number of parts in the composite lifting device. Specifically, the end of the connecting shaft 203 slides on the inclined structure 406. To reduce friction, a roller or a rotatable bushing 205 can be connected to the end of the connecting shaft 203.

[0044] It should be noted that there is no limitation on which of the first scissor lift 201 and the second scissor lift 202 is the outer scissor lift and which is the inner scissor lift. The attached figure is just an example of a preferred solution. The first scissor lift 201 is the outer scissor lift and the second scissor lift 202 is the inner scissor lift, which facilitates the assembly of the composite lifting device and makes the structure of the composite lifting device compact.

[0045] The inclined structure 406 can be disposed on the side wall of the drive seat 403. In this case, the inclined structure 406 is an inclined groove. A disengagement channel is provided on the drive seat 403, which communicates with the inclined groove. This allows the lifting component to move along the inclined groove and then disengage from the drive seat 403 via the disengagement channel. Alternatively, the inclined structure 406 can be disposed on the surface of the drive seat 403 away from the base 1, meaning the surface of the drive seat 403 away from the base 1 is inclined. This structure is simple and easy to manufacture. Alternatively, the inclined structure 406 can be a protrusion disposed on the side wall of the drive seat 403, with the upper surface of the protrusion being inclined. The inclined structure 406 can have various structural forms; the three examples mentioned above are merely examples and not limitations.

[0046] A lower fixing seat 107 can be fixed on the base 1. The first scissor bar 201 is hinged to the lower fixing seat 107. An upper fixing seat 302 is hinged to the second scissor bar 202. The lifting plate 3 is fixedly connected to the upper fixing seat 302.

[0047] like Figure 2 , Figure 6 and Figure 7 As shown, based on the above embodiment, a limiting component is further provided between the second auxiliary rod 405 and the base 1. When the lifting plate 3 descends from the highest position to the lifting position, the limiting component restricts the second auxiliary rod 405 from moving in the horizontal direction, so that the first auxiliary rod 404 rotates relative to the second auxiliary rod 405, and the second auxiliary rod 405 rotates relative to the second scissor bar 202. When the lifting member is in the lifting position, the limiting component is in a critical state of starting to work.

[0048] In this embodiment, during the descent of the lifting plate 3 from its highest or relatively high position (between the highest and lowest positions), the drive unit 401 drives the drive seat 403 to move in the opposite direction in the horizontal direction (defined as the direction of movement of the drive seat 403 during the lifting process of the composite lifting device being raised being positive, and the direction of movement of the drive seat 403 during the descent being negative). This causes the first auxiliary rod 404 to move in the opposite direction in the horizontal direction. The first auxiliary rod 404 drives the second auxiliary rod 405 to move in the opposite direction in the horizontal direction. The second auxiliary rod 405 drives the second scissor bar 202 to move. The second scissor bar 202 drives the first scissor bar 201 to move, thereby causing the scissor mechanism 2 to descend, which in turn causes the lifting plate 3 to descend. During this process, the composite lifting device descends actively, rather than relying on the weight of the scissor mechanism 2, the weight of the lifting plate 3, and the load weight to achieve descent. This avoids jamming and makes the descent process of the composite lifting device highly stable and reliable.

[0049] When the lifting plate 3 is in the lifting position, the limiting component starts to act, preventing the second auxiliary rod 405 from continuing to move in the reverse direction in the horizontal direction. At this time, the lifting component is just located on the inclined structure 406. The driving component 401 continues to drive the driving seat 403 to move, while the second auxiliary rod 405 is restricted in the horizontal direction. The first auxiliary rod 404 rotates relative to the second auxiliary rod 405, and the second auxiliary rod 405 rotates relative to the second scissor bar 202. Then the horizontal state of the first auxiliary rod 404 and the second auxiliary rod 405 is unbalanced. Both the first auxiliary rod 404 and the second auxiliary rod 405 transition from the horizontal state to the inclined state. At this time, the second auxiliary rod 405 has no driving effect on the scissor mechanism 2. Under the action of its own weight, the weight of the lifting plate 3, and the load, the scissor mechanism 2 continues to descend. The lifting component moves from high to low along the inclined structure 406 until the composite lifting device returns to its initial state. During this process, the inclined structure 406 supports the lifting component, and the descent speed of the lifting plate 3 is stable, avoiding impact and vibration, thus making the descent process highly stable and reliable.

[0050] It should be explained that the lifting process is achieved based on the geometric relationships such as the lifting stroke of the composite lifting device, the movement stroke of the drive seat 403, and the height of the lifting position.

[0051] The limiting component can have various structural forms. For example, the limiting component includes a fixed rod and a movable rod. Along the length of the fixed rod, there is a sliding hole on the fixed rod, and the movable plate slides in the sliding hole, that is, the movable rod and the fixed rod form a telescopic rod. A protrusion is provided at the inner end of the movable rod (the end located in the sliding hole), and a baffle is provided at the opening of the sliding hole of the fixed rod. When the movable plate is extended to its maximum length, the baffle abuts against the protrusion, preventing the movable plate from extending further outward. The fixed rod is hinged to the base 1, and the movable rod is hinged to the second auxiliary rod 405. In the direction of the forward movement of the drive seat 403, the telescopic rod can be located upstream of the second auxiliary rod 405. At this time, when the lifting plate 3 is in the lifting position, the movable rod is fully retracted. In the direction of the forward movement of the drive seat 403, the telescopic rod can be located downstream of the second auxiliary rod 405. At this time, when the lifting plate 3 is in the lifting position, the movable rod is fully extended.

[0052] As an alternative, such as Figure 2 , Figure 6 and Figure 7 As shown, the limiting assembly includes a limiting hook 407 and a limiting groove 101. The limiting hook 407 is fixed on the second auxiliary rod 405, and the limiting groove 101 is disposed on the base 1. The limiting hook 407 can move along the limiting groove 101, and when the lifting plate 3 is in the raised position, in the lowest position, and in the lowest position, the limiting hook 407 is located at the end of the limiting groove 101.

[0053] In this embodiment, the limiting hook 407 can abut against the edge of the end of the limiting groove 101. This limiting component has a simple structure, reliable limiting, and also makes the rotation of the second auxiliary rod 405 smooth.

[0054] As an alternative, such as Figure 7 As shown, the first auxiliary rod 404 is located between the drive seat 403 and the second auxiliary rod 405. When both the first auxiliary rod 404 and the second auxiliary rod 405 are in a horizontal state, the first auxiliary rod 404 and the second auxiliary rod 405 are at 180 degrees. This setting can make the force transmission reliable, avoid jamming, and ensure the reliability of lifting.

[0055] like Figure 2 and Figure 6 As shown, based on the above embodiment, a guide block 408 is further fixed at the bottom of the drive seat 403, and a guide groove 102 is provided on the base 1. The guide block 408 is slidably disposed in the guide groove 102 along the movement direction of the drive seat 403.

[0056] In this embodiment, during the movement of the drive seat 403, the guide block 408 is slidably disposed in the guide groove 102. The guide groove 102 can restrict the guide block 408 in the width direction of the base 1, so as to prevent the drive seat 403 from shaking in the width direction of the base 1 and make the movement of the drive seat 403 smooth.

[0057] like Figure 7 and Figure 10 As shown, based on the above embodiment, the lifting plate 3 is further provided with an upper slide groove 301, and the upper end of the first scissor bar 201 is slidably disposed in the upper slide groove 301 along the movement direction of the drive seat 403; the upper slide groove 301 can limit the upper end of the first scissor bar in the height direction.

[0058] In this embodiment, during the lifting and lowering process of the scissor mechanism 2, the first scissor bar 201 can move along the upper slide groove 301. The upper slide groove 301 can limit the upper and lower parts of the upper end of the first scissor bar 201, which can not only ensure the smoothness of the movement of the first scissor bar 201, but also prevent the lifting plate 3 from tilting.

[0059] Specifically, the cross-section of the lifting plate 3 can be U-shaped, and an upper sliding groove 301 is opened on the inner side wall of the lifting plate 3.

[0060] An upper roller 204 or an upper sliding sleeve can be connected to the end of the first scissor bar 201. The upper end of the first scissor bar 201 moves along the upper sliding groove 301 through the upper roller 204 or the upper sliding sleeve, making the movement of the first scissor bar 201 smoother.

[0061] like Figure 7 and Figure 10As shown, based on the above embodiment, the base 1 is further provided with a lower slide groove 103, the second scissor bar 202 is fixed with a first slide plate 409, and the drive seat 403 is provided with a second slide plate 410. The first slide plate 409 and the second slide plate 410 are both slidably disposed in the lower slide groove 103 along the movement direction of the drive seat 403; the lower slide groove 103 can limit the first slide plate 409 and the second slide plate 410 in the height direction.

[0062] In this embodiment, during the lifting and lowering process of the scissor mechanism 2, the first slide plate 409 and the second slide plate 410 both move within the lower slide groove 103. This ensures that the movement of the second scissor bar 202 and the drive seat 403 is smooth, while also preventing the drive seat 403 and the second scissor bar 202 from tilting up on one side.

[0063] The first slide plate 409 can be set at the lower end of the second scissor bar 202.

[0064] Specifically, the cross-section of the base 1 can be U-shaped, and a baffle 104 is provided on the inner wall of the base 1, forming a lower sliding groove 103 between the baffle 104 and the base 1.

[0065] like Figures 1 to 10 As shown, in the width direction of the base 1, the first scissor bar 201 and the second scissor bar 202 are symmetrically arranged on both sides of the base 1. Both connecting shafts 203 can move along the inclined structure 406. It can also be understood that the scissor mechanism 2 includes two scissor bar groups. The two scissor bar groups are symmetrically arranged in the width direction of the base 1. Each scissor bar group has the same structure. Correspondingly, the number of first auxiliary rods 404, the number of second auxiliary rods 405, the number of limiting grooves 101, the number of upper sliding grooves 301, and the number of lower sliding grooves 103 are all two.

[0066] If the inclined structure is set on the side wall of the drive seat, then the two opposite side walls of the drive seat are provided with inclined structures, and the two inclined structures correspond one-to-one with the two connecting shafts.

[0067] The drive component 401 can be a hydraulic cylinder or a pneumatic cylinder, etc.

[0068] As an alternative, such as Figures 1 to 10As shown, the driving component 401 is a motor, and the transmission components include a lead screw 402 and a lead nut 411. Along the movement direction of the driving seat 403, a front support seat 105 and a rear support seat 106 are spaced apart on the base 1. The motor is located on the side of the front support seat 105 away from the rear support seat 106. The two ends of the lead screw 402 are rotatably connected to the front support seat 105 and the rear support seat 106 respectively (one end of the lead screw 402 can be rotatably connected to the front support seat 105 through the front bearing, and the other end of the lead screw 402 can be rotatably connected to the rear support seat 106 through the rear bearing). The motor is driven by the lead screw 402 to drive the lead screw 402 to rotate. The lead nut 411 is sleeved on the lead screw 402, and the driving seat 403 is fixedly connected to the lead nut 411.

[0069] In this embodiment, the direction in which the drive seat 403 moves closer to the motor is the positive direction, and the direction in which it moves away from the motor is the negative direction.

[0070] The motor can be connected to the lead screw 402 via coupling 412.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Numerous specific details are set forth in the specification provided herein. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the present invention and form different embodiments.

Claims

1. A composite lifting device, characterized in that, include: Base; A scissor lift mechanism, the lower part of which is connected to the base, the scissor lift mechanism including a lifting member; the scissor lift mechanism including a first scissor bar and a second scissor bar, the first scissor bar and the second scissor bar being hinged by a connecting shaft, the connecting shaft forming the lifting member; an inclined structure is provided on the surface of the drive seat away from the base; The lower end of the first scissor bar is hinged to the base, and the upper end of the first scissor bar is slidably connected to the lifting plate; the lower end of the second scissor bar is slidably connected to the base, and the upper end of the second scissor bar is hinged to the lifting plate. The second auxiliary rod is hinged to the second scissor bar; A lifting plate, which is connected to the upper part of the scissor lift mechanism; A power mechanism is mounted on the base; the power mechanism includes a driving component, a transmission component, a driving seat, a first auxiliary rod, and a second auxiliary rod; the driving component drives the driving seat to reciprocate horizontally via the transmission component; one end of the first auxiliary rod is hinged to the driving seat, the other end of the first auxiliary rod is hinged to one end of the second auxiliary rod, and the other end of the second auxiliary rod is hinged to the second scissor bar; the driving seat is provided with an inclined surface structure; When the lifting plate is in its lowest position, an angle is formed between the first auxiliary rod and the second auxiliary rod; when the lifting plate is in its raised position, both the first auxiliary rod and the second auxiliary rod are in a horizontal state; during the lifting process, when the lifting plate is between the lowest position and the raised position, the lifting member can move relative to the drive seat along the inclined structure; when the lifting plate is between the raised position and the highest position, the lifting member can disengage from the inclined structure.

2. The composite lifting device according to claim 1, characterized in that, A limiting component is provided between the second auxiliary rod and the base. When the lifting plate descends from the highest position to the lifting position, the limiting component restricts the second auxiliary rod from moving in the horizontal direction, so that the first auxiliary rod rotates relative to the second auxiliary rod, and the second auxiliary rod rotates relative to the second scissor bar.

3. The composite lifting device according to claim 2, characterized in that, The limiting component includes a limiting hook and a limiting groove. The limiting hook is fixed on the second auxiliary rod, and the limiting groove is disposed on the base. The limiting hook can move along the limiting groove, and when the lifting plate is located at the lifting position, at the lowest position, and between the lowest position, the limiting hook is located at the end of the limiting groove.

4. The composite lifting device according to claim 1, characterized in that, The first auxiliary rod is located between the drive seat and the second auxiliary rod.

5. The composite lifting device according to claim 1, characterized in that, A guide block is fixed to the bottom of the drive seat, and a guide groove is provided on the base. The guide block slides in the guide groove along the movement direction of the drive seat.

6. The composite lifting device according to claim 1, characterized in that, The lifting plate is provided with an upper sliding groove, and the upper end of the first scissor bar slides in the upper sliding groove along the movement direction of the drive seat; the upper sliding groove can limit the upper end of the first scissor bar in the height direction.

7. The composite lifting device according to claim 6, characterized in that, The base is provided with a lower sliding groove, the second scissor bar is fixed with a first sliding plate, and the drive seat is provided with a second sliding plate. Both the first sliding plate and the second sliding plate are slidably disposed in the lower sliding groove along the movement direction of the drive seat. The lower slide can limit the movement of the first and second slide plates in the height direction.

8. The composite lifting device according to any one of claims 1-7, characterized in that, In the width direction of the base, the first scissor bar and the second scissor bar are symmetrically arranged on both sides of the base, and both connecting shafts can move along the inclined structure.

9. The composite lifting device according to claim 1, characterized in that, The driving component is a motor, and the transmission component includes a lead screw and a lead nut; Along the direction of movement of the drive seat, a front support seat and a rear support seat are provided on the base at intervals. The motor is located on the side of the front support seat away from the rear support seat. The two ends of the lead screw are rotatably connected to the front support seat and the rear support seat respectively. The motor is connected to the lead screw to drive the lead screw to rotate. The lead screw nut is sleeved on the lead screw. The drive seat is fixedly connected to the lead screw nut.

Images