Synchronous lifting structure and synchronous lifting table thereof

Abstract

The utility model discloses a synchronous lifting structure and aims to overcome the defects that an existing lifting mechanism is complex in structure, large in control difficulty and tedious in copying and corresponding parameter modification. The synchronous lifting mechanism comprises a crank rocker structure and a synchronous lifting structure, the crank rocker structure comprises a crank block, a first connecting rod and a first rocker block, and the synchronous lifting structure comprises a second connecting rod and a second rocker block. The second connecting rod is rotationally connected between the first rocker block and the second rocker block so that the first rocker block and the second rocker block can synchronously swing, the first rocker block and the second rocker block are located at the positions, close to the two ends, of the lifting table in the length direction correspondingly, and the first rocker block and the second rocker block are installed on the lifting support correspondingly. A sliding groove is formed in the lifting table in the length direction, and the lifting support is in sliding connection with the sliding groove. Lifting of the lifting table is achieved through a crank rocker structure, the structure is simple, controllability is high, and parameter design is easy.

Description

Technical Field

[0001] The utility model relates to the field of automobile production and manufacturing, and more specifically, it relates to a synchronous lifting structure and a synchronous lifting platform thereof. Background Art

[0002] There is a need to lift materials in automobile manufacturing.

[0003] In the related art, a hydraulic system is often used for jacking.

[0004] Chinese patent application No. 201720308773.5 discloses a lifting and rotating device for automobile manufacturing, comprising a base, a support leg is provided at the bottom of the base, a pressure dividing plate is provided at the bottom of the support leg, the connection relationship between the base and the support leg is welding, a hydraulic device body is provided at the top of the base, the number of the hydraulic device bodies is four, and the hydraulic device bodies are respectively located at the four corners of the top of the base, the output end of the hydraulic device body is connected with a piston rod, the end of the piston rod is connected with a support seat, the base and the support seat are arranged in parallel, and a guide column is further provided between the support seat and the base, the top of the guide column is fixedly connected to the middle position of the bottom of the support seat, a guide sleeve is provided in the middle of the base, and the bottom end of the guide column runs through the entire guide sleeve. The utility model is a lifting and rotating device for automobile manufacturing, which has novel structure, convenient operation, reduced deviation, high processing accuracy, and effectively prevents the chain from becoming loose. In the above-mentioned public patent, the car is placed on the turntable without being fixed, which may easily cause the car to move and slide during rotation, and the turntable is only connected and supported by a rotating shaft, and its pressure-bearing strength is relatively weak.

[0005] The hydraulic system needs to be equipped with corresponding hydraulic control devices, which are difficult to control, and the copying and corresponding parameter modification are relatively cumbersome.

[0006] The present application aims to provide another type of synchronous lifting structure and synchronous lifting platform thereof. Summary of the invention

[0007] The utility model overcomes the deficiencies of the related art and provides a synchronous lifting structure and a synchronous lifting platform thereof, which has a simple structure, strong controllability and reproducibility, is easy to design parameters, can achieve high beat and high stability, and has the characteristics of high power, low cost and easy maintenance.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A synchronous lifting structure is used for lifting a lifting platform, including a crank rocker structure and a synchronous lifting structure, the crank rocker structure includes a crank block, a first connecting rod and a first rocker block, the synchronous lifting structure includes a second connecting rod and a second rocker block, the second connecting rod is rotatably connected between the first rocker block and the second rocker block so that the first rocker block and the second rocker block rock synchronously, the first rocker block and the second rocker block are respectively located near the two ends in the length direction of the lifting platform, the first rocker block and the second rocker block are respectively installed on the lifting bracket, the lifting platform is provided with a sliding groove arranged along the length direction, and the lifting bracket is slidably connected to the sliding groove.

[0010] The crank rocker structure transmits the torque, so that the swing of the rocker causes the end of the rocker to generate displacement and force in the up-down and left-right directions. The displacement and force in the up-down direction drive the lifting bracket to lift the lifting platform, and the displacement and force in the left-right direction cause the lifting bracket to displace in the length direction relative to the lifting platform. The lifting platform is lifted synchronously by the first rocker block and the second rocker block, so that the lifting platform is always in the same plane during the lifting process.

[0011] Preferably, the crank block is coaxially connected to the output shaft, the first connecting rod is rotationally connected to the eccentric position of the crank block, the first rocker block is rotationally connected to the lifting bracket, and the first connecting rod and the second connecting rod are respectively rotationally connected to the eccentric position of the first rocker block.

[0012] Preferably, the distances from the connection points of the first connecting rod and the second connecting rod with the first rocker block to the connection points of the first rocker block and the rotating bracket are the same; the distances from the connection points of the second connecting rod and the second rocker block to the second rocker block and the rotating bracket are the same as the aforementioned distances. The structure enables the first rocker block and the second rocker block to have the same swing amplitude as the first connecting rod and the second connecting rod move.

[0013] Preferably, a lifting bearing is provided on the lifting bracket, and the lifting bearing is located in the sliding groove and rollingly cooperates with the sliding groove.

[0014] Preferably, it also includes a first stroke sensor and an anti-collision block, the first stroke sensor is electrically connected to the driver corresponding to the output shaft, the anti-collision block is arranged on the first connecting rod near the crank block, along the length direction of the lifting platform, the first stroke sensor is arranged at both ends of the stroke limit of the corresponding crank block, and the first stroke sensor feeds back a position signal to the driver by detecting the position of the anti-collision block. The structure is used to limit the lifting stroke of the lifting platform from the power source to avoid collision.

[0015] As a preference, a second stroke sensor for detecting the height of the lifting platform is also included, and the second stroke sensor is electrically connected to the driver corresponding to the output shaft. The structure directly detects the stroke of the lifting platform.

[0016] A synchronous lifting platform comprises a lifting platform body, a base frame and the above-mentioned synchronous lifting structure, wherein the base frame is provided with support frames at both ends in the length direction, and the support frames support the lifting platform and the lifting bracket is placed on the frame when the lifting platform is at the lowest position. The base frame and the support frames support the lifting platform in the absence of power to avoid long-term load on the driver, which causes the driver to fail.

[0017] Preferably, each corner of the base frame is provided with a leveling block. The structure ensures the levelness of the base frame.

[0018] Preferably, the driver corresponding to the output shaft is fixedly connected to the base frame.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The lifting platform is lifted and lowered by a crank rocker structure, which has a simple structure, strong controllability and easy parameter design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the utility model and a partial enlarged diagram thereof;

[0022] Figure 2 It is a schematic diagram of the utility model from another viewing angle;

[0023] Figure 3 It is a schematic diagram of the crank rocker structure and the synchronous lifting structure of the utility model;

[0024] In the figure:

[0025] Lifting platform 1, sliding groove 11, crank rocker structure 2, crank block 21, first connecting rod 22, first rocker block 23, lifting bracket 24, lifting bearing 241, first stroke sensor 25, anti-collision block 26, second stroke sensor 27, induction block 28, synchronous lifting structure 3, second connecting rod 31, second rocker block 32, base frame 4, support frame 41, leveling block 42, driver 43. DETAILED DESCRIPTION

[0026] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0030] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0031] Example:

[0032] A synchronous lifting structure, reference Figure 3 As shown, it is used for lifting a lifting platform 1, and includes a crank rocker structure 2 and a synchronous lifting structure 3. The crank rocker structure 2 includes a crank block 21, a first connecting rod 22 and a first rocker block 23, and the synchronous lifting structure 3 includes a second connecting rod 31 and a second rocker block 32. The second connecting rod 31 is rotatably connected between the first rocker block 23 and the second rocker block 32 so that the first rocker block 23 and the second rocker block 32 rock synchronously, and the first rocker block 23 and the second rocker block 32 are respectively located near the two ends in the length direction of the lifting platform 1. The first rocker block 23 and the second rocker block 32 are respectively installed on the lifting bracket 24, and the lifting platform 1 is provided with a sliding groove 11 arranged along the length direction, and the lifting bracket 24 is slidably connected with the sliding groove 11.

[0033] The crank rocker structure 2 includes a crank block 21, a first connecting rod 22 and a first rocker block 23. The crank block 21 is coaxially connected to the output shaft, and the first connecting rod 22 is rotatably connected to the eccentric position of the crank block 21. Specifically, the first connecting rod 22 is connected to a connecting block through a locking nut, and the connecting block is sleeved on a rotating shaft rotatably arranged at the eccentric position of the crank block 21.

[0034] The first rocker block 23 is rotatably connected to the lifting bracket 24. The lifting bracket 24 has bearing seats at both ends in the width direction. The bearing seats and the bearings are matched to position the rotating shaft, and the rotating shaft is connected to the lifting bracket 24, so as to realize the rotatable connection between the lifting bracket 24 and the first rocker block 23. The first connecting rod 22 and the second connecting rod 31 are rotatably connected to the eccentric position of the first rocker block 23, and the distances from the connection points of the first connecting rod 22 and the second connecting rod 31 with the first rocker block 23 to the connection points of the first rocker block 23 and the rotating bracket are the same.

[0035] The second connecting rod 31 is connected to the first rocker block 23 and the second rocker block 32, and is used to transmit displacement and force to the second rocker block 32, so that the first rocker block 23 and the second rocker block 32 have the same swing angle. The distance from the connection point between the second connecting rod 31 and the second rocker block 32 to the second rocker block 32 and the rotating bracket is the same as the aforementioned distance. The structure enables the first rocker block 23 and the second rocker block 32 to have the same swing amplitude as the first connecting rod 22 and the second connecting rod 31 move.

[0036] Ginseng Figure 2 As shown, in some embodiments, the lifting bracket 24 is slidably connected to the sliding groove 11 in such a way that a lifting bearing 241 is provided on the lifting bracket 24 , and the lifting bearing 241 is located in the sliding groove 11 and rollingly cooperates with the sliding groove 11 .

[0037] In addition to the above mechanical structure, there is also the following stroke sensor for feedback of the state of the device.

[0038] It also includes a first stroke sensor 25 and an anti-collision block 26. The first stroke sensor 25 is electrically connected to the driver 43 corresponding to the output shaft. The anti-collision block 26 is arranged on the first connecting rod 22 near the crank block 21. Along the length direction of the lifting platform 1, the first stroke sensor 25 is arranged at both ends of the stroke limit of the corresponding crank block 21. The first stroke sensor 25 feeds back a position signal to the driver 43 by detecting the position of the anti-collision block 26. The structure is used to limit the lifting stroke of the lifting platform 1 from the power source to avoid collision.

[0039] A second stroke sensor 27 for detecting the height of the lifting platform 1 is also included, and the second stroke sensor 27 is electrically connected to the driver 43 corresponding to the output shaft. The structure directly detects the stroke of the lifting platform 1. The sensing block 28 for sensing the second stroke sensor 27 is arranged on the base frame 4, and the second stroke sensor 27 is located on the lifting platform 1, or vice versa, the second stroke sensor 27 is located on the base frame 4, and the sensing block 28 is located on the lifting platform 1.

[0040] The movement process of this structure is as follows:

[0041] Ginseng Figure 1As shown, the driving motor serves as a driver 43, which drives the crank block 21 to rotate at a certain angle or 360° through the output shaft, and drives the first rocker block 23 to swing through the rotating first connecting rod 22. Synchronously, the second rocker block 32 and the first rocker block 23 swing synchronously.

[0042] During the swinging process, since the lifting bracket 24 connected to the first rocker block 23 and the second rocker block 32 supports the lifting platform 1, the lifting bracket 24 bears the downward pressure converted from the gravity of the lifting platform 1. During the swinging process, the first rocker block 23 and the second rocker block 32 are subjected to the lateral and upward forces of the first connecting rod 22 and the second connecting rod 31, and the upward force exceeds the pressure, so the lifting bracket 24 and the lifting platform 1 move upward. The horizontal force drives the lifting bracket 24 to translate in the corresponding direction, and due to the sliding connection between the lifting bracket 24 and the sliding groove 11, the lifting platform 1 is not subjected to horizontal displacement.

[0043] The crank rocker structure 2 transmits the torque, so that the swing of the rocker causes the end of the rocker to generate displacement and component forces in the up-down and left-right directions. The displacement and component forces in the up-down direction drive the lifting bracket 24 to lift the lifting platform 1, and the displacement and component forces in the left-right direction cause the lifting bracket 24 to displace in the length direction relative to the lifting platform 1. The lifting platform 1 is lifted synchronously by the first rocker block 23 and the second rocker block 32, so that the lifting platform 1 is always in a plane during the lifting process.

[0044] On the basis of the above-mentioned synchronous lifting structure, a synchronous lifting platform 1 is constructed:

[0045] A synchronous lifting platform 1 includes a lifting platform 1 body, a base frame 4 and the synchronous lifting structure as described above, wherein the base frame 4 is provided with support frames 41 at both ends in the length direction, and the support frames 41 support the lifting platform 1 and place the lifting bracket 24 on the frame when the lifting platform 1 is at the lowest position. The base frame 4 and the support frame 41 support the lifting platform 1 without power to avoid long-term load on the driver 43, causing the driver 43 to fail. The driver 43 corresponding to the output shaft is fixedly connected to the base frame 4.

[0046] Each corner of the base frame 4 is provided with a leveling block 42. The structure ensures the level of the base frame 4. Specifically, the leveling block 42 adjusts the extension of the leveling block 42 by a threaded manner, and after the leveling is completed, the leveling block 4 is positioned by welding to ensure the level of the base frame 4.

[0047] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A synchronous lifting structure for raising and lowering a lifting platform, characterized in that: It includes a crank rocker structure and a synchronous lifting structure. The crank rocker structure includes a crank block, a first connecting rod and a first rocker block. The synchronous lifting structure includes a second connecting rod and a second rocker block. The second connecting rod is rotatably connected between the first rocker block and the second rocker block so that the first rocker block and the second rocker block rock synchronously. The first rocker block and the second rocker block are respectively located near the two ends in the length direction of the lifting platform. The first rocker block and the second rocker block are respectively installed on the lifting bracket. The lifting platform is provided with a sliding groove arranged along the length direction, and the lifting bracket is slidably connected to the sliding groove.

2. A synchronous lifting structure according to claim 1, characterized in that: The crank block is coaxially connected to the output shaft, the first connecting rod is rotationally connected to the eccentric position of the crank block, the first rocker block is rotationally connected to the lifting bracket, and the first connecting rod and the second connecting rod are rotationally connected to the eccentric position of the first rocker block respectively.

3. A synchronous lifting structure according to claim 2, characterized in that: The distance from the connection point between the first connecting rod and the second connecting rod and the first rocker block to the connection point between the first rocker block and the rotating bracket is the same; the distance from the connection point between the second connecting rod and the second rocker block to the second rocker block and the rotating bracket is the same as the aforementioned distance.

4. A synchronous lifting structure according to claim 1, characterized in that: A lifting bearing is arranged on the lifting bracket, and the lifting bearing is located in the sliding groove and is in rolling cooperation with the sliding groove.

5. A synchronous lifting structure according to claim 1, characterized in that: It also includes a first stroke sensor and an anti-collision block. The first stroke sensor is electrically connected to a driver corresponding to the output shaft. The anti-collision block is arranged on the first connecting rod near the crank block. Along the length direction of the lifting platform, the first stroke sensor is arranged at both ends of the stroke limit of the corresponding crank block. The first stroke sensor detects the position of the anti-collision block and feeds back a position signal to the driver.

6. A synchronous lifting structure according to claim 5, characterized in that: It also includes a second stroke sensor for detecting the height of the lifting platform, and the second stroke sensor is electrically connected to a driver corresponding to the output shaft.

7. A synchronous lifting platform, characterized in that: It comprises a lifting platform body, a base frame and a synchronous lifting structure as claimed in any one of claims 1 to 6, wherein the base frame is provided with support frames at both ends in the length direction, and the support frames support the lifting platform and place the lifting bracket on the frame when the lifting platform is in the lowest position.

8. A synchronous lifting platform according to claim 7, characterized in that: Leveling blocks are provided at each corner point of the base frame.

9. A synchronous lifting platform according to claim 7, characterized in that: The driver corresponding to the output shaft is fixedly connected to the base frame.

Images