Ultrathin large shear type lifting machine with safety mechanism

Abstract

The utility model discloses an ultrathin large scissor lift with a safety mechanism, which comprises a bottom support, a top support and an X support, the X support comprises a first support and a second support, a hydraulic cylinder is arranged between the upper end of the first support and the lower end of the second support, and the safety mechanism is arranged between the lower end of the first support and the upper end of the second support; the safety mechanism comprises an unlocking plate with a rack and a safety plate with a clamping jaw. The safety plate is provided with a proximity switch and a cylinder; when the clamping jaw is engaged with the rack, the proximity switch sends out a first signal when sensing the unlocking plate, and the hydraulic cylinder is controlled to stop running based on the first signal. When the safety mechanism is in a locking state, the proximity switch senses the unlocking plate and then sends out a first signal which represents that locking is completed; the hydraulic cylinder stops running based on a first signal of the proximity switch, so that the top support stops descending, the front and back heights of the top support are consistent, namely the top support is in a horizontal state, and stable supporting is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifts, and more specifically to an ultra-thin large scissor lift with a safety mechanism. Background Art

[0002] Scissor lift Scissor lift is an automobile repair machine used in the automobile repair industry. It is driven by a hydraulic system to lift and lower. It is also called a hydraulic lift. It plays a vital role in automobile repair and maintenance. In actual application, scissor lifts can be used in other industries in addition to the automobile repair industry.

[0003] In the scissor lift of the prior art, a driving valve is provided on the first side of the X bracket to control the movement of the X bracket so that the top bracket and the bottom bracket of the scissor lift are relatively close to or far away from each other, and a safety mechanism is provided on the second side of the X bracket. When locked, the second side equipped with the safety mechanism stops descending after being locked, while the first side without the safety mechanism will continue to descend for a short distance and then stop. This causes the front and rear heights of the platform (top bracket) to be inconsistent, that is, it is not horizontally set. When used, such as in the automotive industry, when lifting a car, the car is tilted, which is inconvenient for maintenance. Similarly, it also causes an impact when used in other industries. Utility Model Content

[0004] In view of this, the utility model provides an ultra-thin large scissor lift with a safety mechanism

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultra-thin large scissor lift with a safety mechanism, comprising: a bottom bracket, a top bracket and an X bracket connected between the bottom bracket and the top bracket, the X bracket comprising: a first bracket and a second bracket intersecting in an X shape, a hydraulic cylinder is arranged between the upper end of the first bracket and the lower end of the second bracket, and a safety mechanism is arranged between the lower end of the first bracket and the upper end of the second bracket;

[0006] The safety mechanism comprises: an unlocking plate with a rack and a safety plate with a claw;

[0007] The safety plate is provided with a proximity switch and a cylinder;

[0008] When the claw is engaged with the rack, the proximity switch senses the unlocking plate and sends a first signal, and the hydraulic cylinder stops running based on the first signal. As a preferred solution of the utility model, the unlocking plate is connected to the lower end of the first bracket, and the safety plate is connected to the upper end of the second bracket;

[0009] The insurance plate comprises: a left plate, a right plate and a connecting plate, wherein the connecting plate is connected between the left plate and the right plate;

[0010] The unlocking plate is provided with a limiting portion, and the limiting portion is stuck in the gap formed between the left plate and the right plate.

[0011] As a preferred solution of the utility model, the cylinder comprises: a cylinder body and a rod body, the cylinder body is installed on the safety plate, and the rod body corresponds to the unlocking plate;

[0012] The rod body extends out of the cylinder body so that the claw and the rack are no longer engaged.

[0013] As a preferred solution of the utility model, after the claw is engaged with the rack, the rod body is perpendicular to the unlocking plate.

[0014] As a preferred solution of the utility model, the X bracket has two groups of symmetrically distributed X brackets, and the two groups of X brackets are connected by a connecting rod;

[0015] The hydraulic cylinder is connected to the connecting rod, and the unlocking plate and the safety plate are connected to the connecting rod.

[0016] As a preferred solution of the utility model, the unlocking plate is provided with a rack corresponding to each group of X brackets, and a claw, a proximity switch and a cylinder are provided corresponding to each rack distribution.

[0017] As a preferred solution of the utility model, the unlocking plate and the safety plate are both provided with connecting ears, and the connecting rod is passed through the connecting ears.

[0018] As a preferred solution of the utility model, the unlocking plate is provided with supporting ribs parallel to the rack, the claws are engaged with different positions of the rack, and the rods of the cylinders correspond to the supporting ribs.

[0019] As a preferred solution of the utility model, it also includes: a control system, the control system has a descending valve and a cylinder, the descending valve controls the hydraulic cylinder, and the air valve controls the cylinder.

[0020] It can be seen from the above technical solution that compared with the prior art, the utility model has the following beneficial technical effects: the utility model adds a proximity switch and a cylinder to the safety mechanism. The proximity switch mainly plays the role of induction trigger. When the safety mechanism is in a locked state, the proximity switch senses the unlocking plate and then sends a first signal, indicating that the locking has been completed; the hydraulic cylinder stops running based on the first signal of the proximity switch, so that the top bracket stops descending, so that the front and rear heights of the top bracket are consistent, that is, it is in a horizontal state, achieving stable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the ultra-thin large scissor lift with a safety mechanism of the utility model;

[0023] Figure 2 It is a front angle schematic diagram of the ultra-thin large scissor lift with a safety mechanism of the utility model;

[0024] Figure 3 It is a schematic diagram of another angle of the ultra-thin large scissor lift with a safety mechanism of the utility model;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a schematic diagram of the safety mechanism of the ultra-thin large scissor lift with a safety mechanism in a locked state according to the utility model;

[0027] Figure 6 It is a schematic diagram of the safety mechanism of the ultra-thin large scissor lift with a safety mechanism in the unlocked state according to the utility model.

[0028] Description of Reference Numerals

[0029] Bottom bracket 100; top bracket 200; X bracket 300; first bracket 310; second bracket 320; safety mechanism 400; unlocking plate 410; rack 411; limiting portion 412; supporting rib 413; safety plate 420; claw 421; proximity switch 422; cylinder 423; cylinder body 4231; rod body 4232; left plate 424; right plate 425; connecting plate 426; hydraulic cylinder 500. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0032] 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 directly connected or indirectly connected 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.

[0033] Ultra-thin large scissor lift with safety mechanism, please refer to Figure 1-6 As shown, it includes: a bottom bracket 100 , a top bracket 200 , and an X bracket 300 connected between the bottom bracket 100 and the top bracket 200 .

[0034] Specifically, Figure 1 As shown, Figure 1 Two groups of symmetrical scissor lifts are arranged in the middle, and the two groups of scissor lifts have the same structure.

[0035] For example Figure 2 As shown, the bottom bracket 100 is supported on the ground, the top bracket 200 is located above the bottom bracket 100, and the X bracket 300 is connected between the bottom bracket 100 and the top bracket 200;

[0036] The X bracket 300 includes: a first bracket 310 and a second bracket 320 intersecting in an X shape, a hydraulic cylinder 500 is arranged between the upper end of the first bracket 310 and the lower end of the second bracket 320, and a safety mechanism 400 is arranged between the lower end of the first bracket 310 and the upper end of the second bracket 320;

[0037] Continue as Figure 2 As shown, a safety mechanism 400 is provided on the left side of the scissor lift, and a hydraulic cylinder 500 is provided on the right side. The hydraulic cylinder 500 is mainly used to drive the top bracket 200 to rise or fall when the X bracket 300 moves;

[0038] The safety mechanism 400 is mainly used for locking the X bracket 300 and stopping the movement of the top bracket 200 when the hydraulic cylinder 500 drives the X bracket 300 to move and drives the top bracket 200 to descend.

[0039] Continue as Figure 2 As shown, the hydraulic cylinder 500 runs, driving the top bracket 200 to descend through the X bracket 300. In the conventional technology, during the descent of the top bracket 200, when the safety mechanism on the left side is locked, the left side of the top bracket 200 stops descending, while the right side of the top bracket 200 continues to descend for a short distance driven by the hydraulic cylinder 500 before stopping, which causes the left and right sides of the top bracket 200 to be non-parallel.

[0040] Therefore, in this embodiment, the safety mechanism of the prior art is improved. In this embodiment, the safety mechanism 400 includes: an unlocking plate 410 with a rack 411 and a safety plate 420 with a claw 421; the safety plate 420 is provided with a proximity switch 422 and a cylinder 423;

[0041] When the claw 421 is engaged with the rack 411, the proximity switch 422 sends a first signal when sensing the unlocking plate 410, and the hydraulic cylinder 500 stops running based on the first signal, so that the top bracket 200 is lowered to the set position and then remains horizontal.

[0042] Furthermore, it also includes: a control system, the control system has a descending valve and an air valve, the descending valve controls the hydraulic cylinder, and the air valve controls the air cylinder. The control system and the descending valve are not shown in this embodiment, the control system can be designed as a control box, and the descending valve is connected to the hydraulic cylinder 500 and the air cylinder 423;

[0043] Specifically, the user presses the locking button on the control system, the descending valve opens, the hydraulic cylinder 500 runs to drive the top bracket 200 to descend, the cylinder 423 is blocked, and while the top bracket 200 descends, the safety plate 420 moves relative to the unlocking plate 410, and is locked when the claw 421 of the safety plate 420 engages with the rack 411. The proximity switch 422 senses the unlocking plate 410, and the proximity switch 422 sends a signal to the control system. The control system closes the descending valve and controls the hydraulic cylinder 500 to stop running, the top bracket 200 stops descending, and the top bracket 200 remains parallel.

[0044] When unlocking is required, the descending valve is closed, the hydraulic cylinder 500 drives the top bracket 200 to move, the control system controls the cylinder 423 to operate, and the cylinder 423 pushes the claw 421 to disengage the rack 411.

[0045] Further, the unlocking plate 410 is connected to the lower end of the first bracket 310, and the insurance plate 420 is connected to the upper end of the second bracket 320; the insurance plate 420 includes: a left plate 424, a right plate 425 and a connecting plate 426, and the connecting plate 426 is connected between the left plate 424 and the right plate 425; the unlocking plate 410 is provided with a limiting portion 412, and the limiting portion 412 is stuck in the gap formed between the left plate 424 and the right plate 425;

[0046] Specifically, Figure 5-6 As shown, the unlocking plate 410 is located below the safety plate 420 , and three claws 421 are provided on the safety plate 420 corresponding to the rack 411 , so that the claws 421 and the rack 411 are stably engaged.

[0047] The cylinder 423 includes: a cylinder body 4231 and a rod body 4232. The cylinder body 4231 is installed on the safety plate 420. The rod body 4232 corresponds to the unlocking plate 410. During the locking process, the descending valve is opened and the cylinder 423 is not ventilated (ie, does not operate).

[0048] When unlocking is required, the descending valve is closed, the cylinder 423 is operated, the rod body 4232 extends out of the cylinder body 4231, and pushes the unlocking plate 410 and the safety plate 420 to move in the opposite direction, so that the claw 421 and the rack 411 are no longer engaged.

[0049] Furthermore, the unlocking plate 410 is provided with a supporting rib 413 parallel to the rack 411, the claw 421 is engaged with different positions of the rack 411, and the rod body 4232 of the cylinder 423 corresponds to the supporting rib 413;

[0050] After the claw 421 is engaged with the rack 411 , the rod 4232 is perpendicular to the unlocking plate 410 , so that the rod 4232 can subsequently act on the unlocking plate 410 to push it to move.

[0051] Furthermore, the X-bracket 300 has two symmetrically distributed groups, and the two groups of X-brackets 300 are connected by a connecting rod; the hydraulic cylinder 500 is connected to the connecting rod, and the unlocking plate 410 and the safety plate 420 are connected to the connecting rod; the hydraulic cylinder 500 can synchronously drive the two groups of X-brackets 300 to move, and the lifting of the lift is more stable.

[0052] Furthermore, the unlocking plate 410 is provided with a rack 411 corresponding to each group of X brackets 300, and a claw 421, a proximity switch 422 and a cylinder 423 are provided corresponding to each rack 411;

[0053] Furthermore, the unlocking plate 410 and the safety plate 420 are both provided with connecting ears, and the connecting rod is passed through the connecting ears.

[0054] When the ultra-thin large scissor lift with a safety mechanism of the utility model is in use, the unlocking plate is sensed by the proximity switch and then a first signal is sent. After receiving the first signal, the control system controls the operation of the descending valve and the hydraulic cylinder 500, so that the safety mechanism is locked and the hydraulic cylinder 500 stops running, ensuring that the top bracket 200 remains parallel.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Ultra-thin large scissor lift with safety mechanism, including: A bottom bracket (100), a top bracket (200), and an X bracket (300) connected between the bottom bracket (100) and the top bracket (200), characterized in that: the X bracket (300) comprises: a first bracket (310) and a second bracket (320) intersecting in an X shape, a hydraulic cylinder (500) is arranged between the upper end of the first bracket (310) and the lower end of the second bracket (320), and a safety mechanism (400) is arranged between the lower end of the first bracket (310) and the upper end of the second bracket (320); The safety mechanism (400) comprises: an unlocking plate (410) with a rack (411) and a safety plate (420) with a claw (421); The safety plate (420) is provided with a proximity switch (422) and a cylinder (423); When the claw (421) is engaged with the rack (411), the proximity switch (422) sends a first signal when sensing the unlocking plate (410); the hydraulic cylinder (500) is controlled to stop running based on the first signal.

2. The ultra-thin large scissor lift with a safety mechanism according to claim 1, characterized in that: The unlocking plate (410) is connected to the lower end of the first bracket (310), and the safety plate (420) is connected to the upper end of the second bracket (320); The insurance plate (420) comprises: a left plate (424), a right plate (425) and a connecting plate (426), wherein the connecting plate (426) is connected between the left plate (424) and the right plate (425); The unlocking plate (410) is provided with a limiting portion (412), and the limiting portion (412) is stuck in the gap formed between the left plate (424) and the right plate (425).

3. The ultra-thin large scissor lift with a safety mechanism according to claim 1 or 2, characterized in that: The cylinder (423) comprises: a cylinder body (4231) and a rod body (4232), wherein the cylinder body (4231) is mounted on the safety plate (420), and the rod body (4232) corresponds to the unlocking plate (410); The rod body (4232) extends out of the cylinder body (4231) so that the claw (421) and the rack (411) are no longer engaged.

4. The ultra-thin large scissor lift with a safety mechanism according to claim 3, characterized in that: After the claw (421) is engaged with the rack (411), the rod body (4232) is perpendicular to the unlocking plate (410).

5. The ultra-thin large scissor lift with a safety mechanism according to claim 1, characterized in that: The X brackets (300) have two groups that are symmetrically distributed, and the two groups of X brackets (300) are connected by a connecting rod; The hydraulic cylinder (500) is connected to the connecting rod, and the unlocking plate (410) and the safety plate (420) are connected to the connecting rod.

6. The ultra-thin large scissor lift with a safety mechanism according to claim 5, characterized in that: The unlocking plate (410) is provided with a rack (411) corresponding to each group of X brackets (300), and a claw (421), a proximity switch (422) and a cylinder (423) are distributed and provided corresponding to each rack (411).

7. The ultra-thin large scissor lift with a safety mechanism according to claim 5, characterized in that: The unlocking plate (410) and the safety plate (420) are both provided with connecting ears, and the connecting rod is passed through the connecting ears.

8. The ultra-thin large scissor lift with a safety mechanism according to claim 1, characterized in that: The unlocking plate (410) is provided with a supporting rib (413) parallel to the rack (411), the claw (421) is engaged with different positions of the rack (411), and the rod body (4232) of the cylinder (423) corresponds to the supporting rib (413).

9. The ultra-thin large scissor lift with a safety mechanism according to claim 1, characterized in that: Also includes: The control system comprises a descending valve and a cylinder. The descending valve controls the hydraulic cylinder, and the air valve controls the cylinder.

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