Lifting machine convenient for workers to overhaul

Abstract

The lifting machine comprises a base, shear arms are symmetrically arranged at the top end of the base, lifting driving devices are arranged in the middles of the shear arms, a lifting platform is arranged at the top ends of the shear arms, a sliding groove is formed in one end of the lifting platform, and a mounting block is slidably connected into the sliding groove; a cross beam is fixedly inserted into the middles of the two mounting blocks, inserting blocks are symmetrically and fixedly mounted at the two ends of the cross beam, and inserting grooves are formed in one ends of the mounting blocks; during installation, the limiting rod can slide by pressing the pressing block, the pressing block is loosened after insertion, the limiting rod is clamped into the limiting groove under the action of the reset spring to achieve primary fixing, secondary limiting is achieved through cooperation of the limiting plate and the limiting gear, and limiting can be relieved by pulling the limiting plate and pressing the pressing block during disassembly. The problem that time is wasted when a bolt is screwed repeatedly is solved, the operation process is simplified, the mounting and dismounting time is saved, and the mounting speed is effectively increased.

Description

Technical Field

[0001] The present invention relates to the technical field of lifts, and specifically to a lift that is convenient for maintenance by staff. Background Art

[0002] A lift is a device used to lift a vehicle to a certain height for facilitating maintenance, repair, inspection, etc. of the bottom and other parts of the vehicle body. It is widely used in various automobile repair shops, 4S stores, automobile inspection stations, etc. According to functions and shapes, lifts can be divided into: single-column lifts, double-column lifts, four-column lifts, and scissor lifts.

[0003] A scissor lift convenient for maintenance operation disclosed in the patent with publication number CN206417818U relates to the technical field of lift equipment, including a lifting platform. There are a pair of lifting platforms arranged in parallel. Bases are provided below the lifting platforms. Scissor arms are arranged between the lifting platforms and the bases. The top of the scissor arm is connected to the lifting platform, and the bottom of the scissor arm is connected to the base. A lifting drive device is provided on the scissor arm. A cross beam is arranged between the lifting platforms. Sliders are provided at both ends of the cross beam. Chutes are provided on the side walls of the lifting platforms. There are a pair of chutes with their openings facing each other. At least two cross beams are provided. The two ends of the cross beam are arranged in the chutes through the sliders, and the cross beam can reciprocate along the chutes. The present invention is flexible to use, and it is simple and safe for the vehicle to move up and down the lifting platform, improving the stability during maintenance operation.

[0004] By adjusting the cross beam between the lifting platforms, the above device can increase the flexibility of the staff during maintenance. According to the description in the specification and the attached drawings, this device is connected by bolts. When installing and disassembling, repeatedly turning the bolts is time-consuming, and the installation and disassembly are inconvenient. Summary of the Invention

[0005] The purpose of the present invention is to provide a lift that is convenient for maintenance by staff to solve the problem that the above device can increase the flexibility of the staff during maintenance by adjusting the cross beam between the lifting platforms. According to the description in the specification and the attached drawings, this device is connected by bolts. When installing and disassembling, repeatedly turning the bolts is time-consuming, and the installation and disassembly are inconvenient.

[0006] To achieve the above object, the present invention provides the following technical solution: A lift for facilitating maintenance by staff, including a base, symmetric shear arms are arranged at the top end of the base, and a lifting drive device is arranged in the middle of the shear arms. A lifting platform is arranged at the top end of the shear arms. A sliding groove is opened at one end of the lifting platform, and a mounting block is slidably connected inside the sliding groove. A cross beam is inserted and fixed in the middle of the two mounting blocks. Plug-in blocks are symmetrically and fixedly installed at both ends of the cross beam, and a plug-in groove is opened at one end of the mounting block. The plug-in groove is adapted to the plug-in block. A groove is opened at the top end of the mounting block, and a limiting rod is slidably connected inside the groove. A limiting groove is opened at the top end of the plug-in block, and the limiting rod is adapted to the limiting groove. A connecting block is rotatably connected to the top end of the limiting rod, and a pressing block is fixedly installed at one end of the connecting block. The pressing block is inclined.

[0007] As a further scheme of the present invention: A rotatable rotating shaft is fixedly installed at one end of the connecting block, and the rotating shafts are symmetrically and fixedly installed at both ends of the connecting block.

[0008] As a further scheme of the present invention: A return spring is fixedly installed inside the groove, and the top end of the return spring is fixedly installed with the bottom end of the pressing block.

[0009] As a further scheme of the present invention: A limiting gear is rotatably connected to one end of the mounting block, and one end of the rotating shaft penetrates through the mounting block and is fixedly installed with the limiting gear. A rotating seat is fixedly installed at one end of the mounting block, and a limiting plate is rotatably connected to one end of the rotating seat. The limiting plate is adapted to the tooth groove of the limiting gear.

[0010] As a further scheme of the present invention: A connecting spring is fixedly installed at one end of the mounting block, and one end of the connecting spring is fixedly installed with the limiting plate.

[0011] As a further scheme of the present invention: Guide chutes are opened at the bottom end of the mounting block, and the guide chutes are symmetrically opened at both ends of the mounting block. Guide sliding rods are symmetrically and fixedly installed inside the sliding groove, and the guide sliding rods are adapted to the guide chutes.

[0012] As a further scheme of the present invention: A baffle is fixedly installed at one end of the lifting platform. A boarding plate is rotatably connected to one end of the lifting platform. A support plate is fixedly installed at the bottom end of the lifting platform, and a double-acting cylinder is fixedly installed at the top end of the support plate. The output end of the double-acting cylinder is connected to the boarding plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] During the installation of the present invention, pressing the pressing block can make the limiting rod slide. After insertion, release the pressing block, and under the action of the return spring, the limiting rod is snapped into the limiting groove to achieve preliminary fixation. Then, secondary limiting is achieved through the cooperation of the limiting plate and the limiting gear. During disassembly, pulling the limiting plate and pressing the pressing block can release the limit. Compared with bolt connection, it avoids the time-consuming problem of repeatedly screwing bolts, simplifies the operation process, saves installation and disassembly time, and effectively improves the installation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is the present invention Figure 1 partial enlarged structural schematic diagram of part A in;

[0017] Figure 3 is a schematic diagram of the side structure of the lifting platform in the present invention;

[0018] Figure 4 is a schematic diagram of the unfolded structure of the mounting block and the cross beam in the present invention;

[0019] Figure 5 is the present invention Figure 4 partial enlarged structural schematic diagram of part B in;

[0020] Figure 6 is a schematic sectional view of the mounting block in the present invention.

[0021] In the figure: 1, base; 2, scissors arm; 3, lifting drive device; 4, lifting platform; 5, baffle; 6, upper car plate; 7, support plate; 8, double-acting cylinder; 9, sliding groove; 10, mounting block; 11, cross beam; 12, insertion groove; 13, insertion block; 14, limiting groove; 15, limiting rod; 16, connecting block; 17, rotating shaft; 18, pressing block; 19, return spring; 20, limiting gear; 21, rotating seat; 22, limiting plate; 23, connecting spring; 24, groove; 25, guiding slide bar; 26, guiding slide groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "set" 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 communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following will describe the embodiments according to the overall structure of the present invention.

[0024] Referring to Figures 1 to 6 , in an embodiment of the present invention, a lift for facilitating maintenance by staff includes a base 1. Symmetrically arranged at the top of the base 1 are scissors arms 2, and a lifting drive device 3 is arranged in the middle of the scissors arms 2. At the top of the scissors arms 2 is a lifting platform 4. One end of the lifting platform 4 is provided with a sliding groove 9, and an installation block 10 is slidably connected inside the sliding groove 9. A cross beam 11 is inserted and fixed in the middle of the two installation blocks 10. Symmetrically fixed at both ends of the cross beam 11 are insertion blocks 13, and an insertion groove 12 is opened at one end of the installation block 10. The insertion groove 12 is adapted to the insertion block 13. A groove 24 is opened at the top of the installation block 10, and a limiting rod 15 is slidably connected inside the groove 24. A limiting groove 14 is opened at the top of the insertion block 13, and the limiting rod 15 is adapted to the limiting groove 14. The top of the limiting rod 15 is rotatably connected to a connecting block 16, and a pressing block 18 is fixedly installed at one end of the connecting block 16. The pressing block 18 is inclined.

[0025] Adopting the above scheme: The scissors arms 2 and the lifting drive device 3 are prior arts cited in the comparative document and are not described in detail in this application. One end of the lifting platform 4 is provided with a sliding groove 9 that slidably cooperates with the installation block 10. The two installation blocks 10 are arranged oppositely. The cross beam 11 is inserted and fixed to the insertion groove 12 on the installation block 10 through the insertion blocks 13 at both ends. The inner wall of the groove 24 at the top of the installation block 10 is flat and smooth. After the insertion block 13 is inserted into the insertion groove 12, the limiting rod 15 can be inserted into the limiting groove 14 to achieve locking. The top of the limiting rod 15 is rotatably connected to the connecting block 16 through a rotating shaft. The inclined pressing block 18 is convenient for the staff to apply force, and the operation is convenient and labor-saving.

[0026] Referring toFigures 1 to 6 One end of the connecting block 16 is fixedly installed with a rotating shaft 17, and the rotating shafts 17 are symmetrically and fixedly installed at both ends of the connecting block 16. A return spring 19 is fixedly installed inside the groove 24, and the top end of the return spring 19 is fixedly installed with the bottom end of the pressing block 18;

[0027] Adopting the above scheme: The rotating shafts 17 symmetrically installed at both ends of the connecting block 16 penetrate the connecting block 16 and are closely connected to the top end of the limiting rod 15. The return spring 19 in the groove 24 is made of spring steel, having good elasticity and anti-fatigue performance. One end of it is firmly fixed at the bottom of the groove 24, and the other end is closely connected to the pressing block 18. When the pressing block 18 is pressed down by force, the return spring 19 compresses and stores energy; after the pressure is removed, the spring quickly releases the elastic force to drive the limiting rod 15 to reset.

[0028] Refer to Figures 1 to 6 One end of the mounting block 10 is rotatably connected with a limiting gear 20, and one end of the rotating shaft 17 penetrates the mounting block 10 and is fixedly installed with the limiting gear 20. One end of the mounting block 10 is fixedly installed with a rotating seat 21, and one end of the rotating seat 21 is rotatably connected with a limiting plate 22. The limiting plate 22 is adapted to the tooth groove of the limiting gear 20. One end of the mounting block 10 is fixedly installed with a connecting spring 23, and one end of the connecting spring 23 is fixedly installed with the limiting plate 22;

[0029] Adopting the above scheme: One end of the rotating shaft 17 penetrates the side wall of the mounting block 10 and is fixed with the limiting gear 20 through a keyway, so that the two rotate synchronously. The shape of the limiting plate 22 fits the tooth groove of the limiting gear 20, which can limit the rotation of the gear. The connecting spring 23 is made of spring steel, one end is welded on the mounting block 10, and the other end is connected with the limiting plate 22. In the natural state, it can tightly press the limiting plate 22 into the tooth groove of the limiting gear 20.

[0030] Refer to Figures 1 to 6 A guiding chute 26 is opened at the bottom end of the mounting block 10, and the guiding chutes 26 are symmetrically opened at both ends of the mounting block 10. Guiding sliding rods 25 are symmetrically and fixedly installed inside the sliding groove 9, and the guiding sliding rods 25 are adapted to the guiding chutes 26;

[0031] Adopting the above scheme: The groove wall of the guiding chute 26 at the bottom end of the mounting block 10 is flat and smooth, and is symmetrically distributed at both ends to ensure uniform force. The size and shape of the guiding chute 26 are adapted to the guiding sliding rods 25 in the sliding groove 9. The guiding sliding rods 25 in the sliding groove 9 are made of alloy steel and have strong wear resistance. The guiding sliding rods 25 are symmetrically fixed on both sides of the sliding groove 9. During the sliding process of the mounting block 10, the guiding sliding rods 25 are embedded in the guiding chutes 26 to play a precise guiding role, effectively preventing the mounting block 10 from shifting or shaking during sliding, and ensuring that the mounting block 10 slides smoothly and smoothly in the sliding groove 9.

[0032] Refer toFigures 1 to 6 , one end of the lifting platform 4 is fixedly installed with a baffle 5, one end of the lifting platform 4 is rotatably connected with an upper car plate 6, the bottom end of the lifting platform 4 is fixedly installed with a support plate 7, and a double-acting cylinder 8 is fixedly installed at the top end of the support plate 7. The output end of the double-acting cylinder 8 is connected to the upper car plate 6;

[0033] Adopting the above scheme: The baffle 5, the double-acting cylinder 8 and the upper car plate 6 are prior arts in the cited reference documents and are not described in detail in this application.

[0034] The working principle of the present invention is as follows: When installing the cross beam 11 and the mounting block 10, the staff needs to align the insertion blocks 13 at both ends of the cross beam 11 with the insertion slots 12 on the mounting block 10. At this time, the staff presses the pressing block 18, driving the connecting block 16 to rotate around the rotating shaft 17. At this time, the connecting block 16 will drive the limiting rod 15 to slide inside the groove 24, and then insert the insertion block 13 into the insertion slot 12. After inserting the insertion block 13 to the bottom, the staff releases the pressing block 18. Under the elastic force of the return spring 19, the limiting rod 15 will slide downward and snap into the limiting slot 14, thereby realizing the preliminary fixation of the cross beam 11 and the mounting block 10. Since the connecting block 16 is rotatably connected to the top end of the limiting rod 15 through the rotating shaft 17, and one end of the rotating shaft 17 penetrates through the mounting block 10 and is fixedly installed with the limiting gear 20, when the limiting rod 15 snaps into the limiting slot 14, the limiting gear 20 will also be fixed accordingly. At the same time, the limiting plate 22 rotatably connected to the rotating seat 21 at one end of the mounting block 10 will be stuck in the tooth groove of the limiting gear 20 under the action of the connecting spring 23, realizing the secondary limitation of the limiting rod 15, preventing the limiting rod 15 from accidentally slipping out of the limiting slot 14, and ensuring the stability of the connection between the cross beam 11 and the mounting block 10. When disassembling the cross beam 11, the staff first pulls the limiting plate 22 to separate the limiting plate 22 from the tooth groove of the limiting gear 20 against the elastic force of the connecting spring 23, releasing the restriction on the limiting gear 20. Then, press the inclined pressing block 18. The pressing block 18 will drive the limiting rod 15 to slide upward in the groove 24 through the connecting block 16, compressing the return spring 19, so that the limiting rod 15 disengages from the limiting slot 14 of the insertion block 13. When the limiting rod 15 completely disengages from the limiting slot 14, the limitation between the cross beam 11 and the mounting block 10 is released, and the staff can pull out the insertion blocks 13 at both ends of the cross beam 11 from the insertion slots 12 of the mounting block 10 to complete the disassembly of the cross beam 11 and the mounting block 10.

[0035] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A lift for facilitating maintenance by staff, comprising a base (1), symmetrically arranged scissors arms (2) are provided at the top of the base (1), and a lifting drive device (3) is arranged in the middle of the scissors arms (2), a lifting platform (4) is arranged at the top of the scissors arms (2), characterized in that, One end of the lifting platform (4) is provided with a sliding groove (9), and an installation block (10) is slidably connected inside the sliding groove (9). A cross beam (11) is inserted and fixed in the middle of the two installation blocks (10). Plug-in blocks (13) are symmetrically and fixedly installed at both ends of the cross beam (11). An insertion groove (12) is opened at one end of the installation block (10). The insertion groove (12) is adapted to the plug-in block (13). A groove (24) is opened at the top end of the installation block (10). A limiting rod (15) is slidably connected inside the groove (24). A limiting groove (14) is opened at the top end of the plug-in block (13). The limiting rod (15) is adapted to the limiting groove (14). The top end of the limiting rod (15) is rotatably connected to a connecting block (16). One end of the connecting block (16) is fixedly installed with a pressing block (18). The pressing block (18) is inclined.

2. The lift for facilitating maintenance by staff according to claim 1, wherein A rotating shaft (17) for rotation is fixedly installed at one end of the connecting block (16). The rotating shafts (17) are symmetrically and fixedly installed at both ends of the connecting block (16).

3. A lift for facilitating maintenance by staff according to claim 2, characterized in that, A return spring (19) is fixedly installed inside the groove (24). The top end of the return spring (19) is fixedly installed with the bottom end of the pressing block (18).

4. A lift for facilitating maintenance by staff according to claim 3, characterized in that, A limiting gear (20) is rotatably connected to one end of the installation block (10). One end of the rotating shaft (17) penetrates through the installation block (10) and is fixedly installed with the limiting gear (20). A rotating seat (21) is fixedly installed at one end of the installation block (10). One end of the rotating seat (21) is rotatably connected to a limiting plate (22). The limiting plate (22) is adapted to the tooth groove of the limiting gear (20).

5. A lift for facilitating maintenance by staff according to claim 4, characterized in that, A connecting spring (23) is fixedly installed at one end of the installation block (10). One end of the connecting spring (23) is fixedly installed with the limiting plate (22).

6. A lift for facilitating maintenance by staff according to claim 5, characterized in that, A guiding sliding groove (26) is opened at the bottom end of the installation block (10). The guiding sliding grooves (26) are symmetrically opened at both ends of the installation block (10). Guiding sliding rods (25) are symmetrically and fixedly installed inside the sliding groove (9). The guiding sliding rods (25) are adapted to the guiding sliding grooves (26).

7. A lift for facilitating maintenance by staff according to claim 6, characterized in that, A baffle (5) is fixedly installed at one end of the lifting platform (4). A boarding plate (6) is rotatably connected to one end of the lifting platform (4). A supporting plate (7) is fixedly installed at the bottom end of the lifting platform (4). A double-acting cylinder (8) is fixedly installed at the top end of the supporting plate (7). The output end of the double-acting cylinder (8) is connected to the boarding plate (6).

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