Lifting frame structure for tool car

Abstract

The utility model discloses a lifting frame structure for a tool car, which belongs to the technical field of tool cars and comprises a saddle, a fixing frame, a lifting component and an objective table, the fixing frame is fixedly mounted on the saddle, the lifting component comprises a lifting frame, a support shaft, a gear, a motor and a transmission component, the lifting frame is slidably mounted on the fixing frame, and the support shaft is fixedly mounted on the lifting frame. The objective table is fixedly installed on one side of the lifting frame, a groove is formed in the side, away from the objective table, of the lifting frame, the supporting shaft is rotatably installed in the groove, the gear is fixedly installed on the supporting shaft, the motor is fixedly installed in the lifting frame, and an output shaft of the lifting frame is in transmission connection with the supporting shaft through a transmission assembly. A toothed plate is fixedly installed in the fixing frame, and the gear is connected with the toothed plate in an engaged mode. And by arranging the lifting assembly, the height of the lifting frame is not higher than that of the fixing frame all the time, so that more upper space does not need to be occupied, and the use limitation possibility is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool vehicles, and in particular relates to a lifting frame structure for a tool vehicle. Background Art

[0002] Tool carts generally refer to simple small carts for placing tools or accessories to be assembled. On the one hand, they can hold various tools used by workers, and on the other hand, they are easy to move, which greatly facilitates the workers to take and place tools or accessories to be assembled.

[0003] The existing Chinese patent with announcement number CN218491369U discloses a tool cart with a lifting function, including a supporting base plate, a hand push rod fixed to the rear side of the supporting base plate, a plurality of rollers installed at the bottom of the supporting base plate, and a loading platform arranged on the supporting base plate, wherein the loading platform is connected to the supporting base plate by a lifting assembly, wherein the lifting assembly includes a lifting frame, a lifting cylinder driving the lifting frame to lift, a hydraulic station cooperating with the lifting cylinder, a sliding column cooperating with the lifting frame, and a slider connecting the lifting frame and the sliding column, wherein the sliding column is vertically fixed to the supporting base plate by a sliding column frame, The rear bottom of the lifting frame is connected to the sliding column through a sliding block, and the loading platform is fixed to the front bottom of the lifting frame through a fixing frame; the lifting oil cylinder includes a cylinder bottom, a cylinder barrel vertically fixed on the cylinder bottom, an oil inlet and outlet arranged at the lower part of the cylinder barrel, a cylinder cover installed on the top of the cylinder barrel, and a plunger rod connected to the inner side of the cylinder barrel by lifting and sliding. The inner side of the top of the cylinder barrel is provided with a guide sleeve matching the plunger rod, the top of the lifting frame is fixed to the top of the plunger rod, the bottom of the lifting frame is close to the cylinder bottom, the hydraulic station is fixed on the cylinder bottom, and at least one battery for supplying power to the hydraulic station is also provided on the supporting bottom plate.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems in the technologies: the above-mentioned technologies use hydraulic cylinders for lifting, but during the lifting process, the lifting frame will be much higher than the sliding column frame. When the working space height is low, the lifting frame will find it difficult to continue to rise, which will easily limit its use. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting frame structure for a tool vehicle to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting frame structure for a tool vehicle, comprising a vehicle seat, a fixing frame, a lifting assembly and a loading platform, wherein the fixing frame is fixedly mounted on the vehicle seat, the lifting assembly comprises a lifting frame, a supporting shaft, a gear, a motor and a transmission assembly, the lifting frame is slidably mounted on the fixing frame, and the loading platform is fixedly mounted on one side of the lifting frame;

[0007] A groove is provided on a side of the lifting frame away from the loading platform, the support shaft is rotatably installed in the groove, the gear is fixedly installed on the support shaft, the motor is fixedly installed in the lifting frame, the output shaft of the lifting frame is connected to the support shaft through a transmission assembly, a toothed plate is fixedly installed inside the fixed frame, and the gear is meshingly connected to the toothed plate.

[0008] As a preferred embodiment, the transmission assembly includes a worm and a worm wheel, the worm is fixedly mounted on the output shaft of the motor, and the worm wheel is fixedly mounted on the support shaft and meshingly connected with the worm.

[0009] As a preferred implementation, guide rods are fixedly mounted on both sides of the fixed frame located on the tooth plate, and the lifting frame is slidably sleeved on the guide rods.

[0010] As a preferred implementation, a connecting frame is provided on one side of the loading platform, and the connecting frame is fixedly mounted to the lifting frame by bolts.

[0011] As a preferred embodiment, a universal wheel with a brake is installed at the bottom of the seat, and an armrest is fixedly installed at the rear end of the seat.

[0012] As a preferred implementation, a power supply box is installed on one side of the fixing frame on the top of the seat.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The lifting frame structure for the tool vehicle is provided with a lifting assembly. When the loading platform is lifted or lowered, the motor can be started to drive the support shaft to rotate through the transmission assembly, so that the support shaft drives the gear to rotate, so that the gear is lifted or lowered along the toothed plate, so that the lifting frame is lifted or lowered along the fixed frame, so that the height of the loading platform can be adjusted, and the height of the lifting frame will never be higher than the fixed frame, so that it does not need to occupy more upper space, and the possibility of limited use is reduced;

[0015] The lifting frame structure for the tool vehicle is provided with a transmission component, and the motor can drive the worm to rotate, so that the worm drives the worm wheel to rotate, and the worm wheel drives the support shaft to rotate. The irreversibility of the transmission between the worm and the worm wheel can be used to avoid spontaneous rotation of the gears, achieve a self-locking effect, and improve the stability of the lifting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the lifting assembly of the utility model;

[0018] Figure 3It is a schematic diagram of the top cross-sectional structure of the lifting frame of the utility model.

[0019] In the figure: 1. seat; 11. universal wheel; 12. armrest; 13. power supply box; 2. fixing frame; 21. tooth plate; 22. guide rod; 3. lifting assembly; 31. lifting frame; 32. supporting shaft; 33. gear; 34. motor; 35. transmission assembly; 351. worm; 352. worm wheel; 36. groove; 4. loading platform; 41. connecting frame. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] See also Figure 1-3 The utility model provides a lifting frame structure for a tool vehicle, including a vehicle seat 1, a fixing frame 2, a lifting assembly 3 and a loading platform 4. A universal wheel 11 with a brake is installed at the bottom of the vehicle seat 1, and an armrest 12 is fixedly installed at the rear end of the vehicle seat 1. A power supply box 13 is installed on the top of the vehicle seat 1 on one side of the fixing frame 2. The fixing frame 2 is fixedly installed on the vehicle seat 1. The lifting assembly 3 includes a lifting frame 31, a support shaft 32, a gear 33, a motor 34 and a transmission assembly 35. The lifting frame 31 is slidably installed on the fixing frame 2. A connecting frame 41 is provided on one side of the loading platform 4. The connecting frame 41 is fixedly installed with the lifting frame 31 by bolts. A groove 36 is opened on the side of the lifting frame 31 away from the loading platform 4. The support shaft 32 is rotatably installed in the groove 36. The gear 33 It is fixedly installed on the support shaft 32, and the motor 34 is fixedly installed in the lifting frame 31. The output shaft of the lifting frame 31 is connected to the support shaft 32 through a transmission assembly 35. The toothed plate 21 is fixedly installed inside the fixed frame 2, and the gear 33 is meshed with the toothed plate 21. By setting the lifting assembly 3, when the loading platform 4 is lifted, the motor 34 can be started to drive the support shaft 32 to rotate through the transmission assembly 35, so that the support shaft 32 drives the gear 33 to rotate, and the gear 33 is lifted and lowered along the toothed plate 21, so that the lifting frame 31 is lifted and lowered along the fixed frame 2, and the height of the loading platform 4 can be adjusted. The height of the lifting frame 31 will never be higher than the fixed frame 2, so that it does not need to occupy more upper space, and the possibility of limited use is reduced.

[0023] Specifically, the transmission assembly 35 includes a worm 351 and a worm wheel 352. The worm 351 is fixedly mounted on the output shaft of the motor 34, and the worm wheel 352 is fixedly mounted on the support shaft 32 and meshingly connected with the worm 351. By setting the transmission assembly 35, the motor 34 can drive the worm 351 to rotate, so that the worm 351 drives the worm wheel 352 to rotate, and the worm wheel 352 drives the support shaft 32 to rotate. By utilizing the irreversibility of the transmission between the worm 351 and the worm wheel 352, the spontaneous rotation of the gear 33 can be avoided, so as to achieve a self-locking effect and improve the stability of the lifting structure; the fixed frame 2 is fixedly mounted with guide rods 22 on both sides of the toothed plate 21, and the lifting frame 31 is slidably sleeved on the guide rods 22. By setting the guide rods 22, the lifting frame 31 can be guided, so as to improve the stability of the lifting frame 31.

[0024] The working principle and use process of the utility model are as follows: first, by setting the lifting component 3, when the loading platform 4 is lifted or lowered, the motor 34 can be started to drive the support shaft 32 to rotate through the transmission component 35, so that the support shaft 32 drives the gear 33 to rotate, and the gear 33 is lifted or lowered along the toothed plate 21, so that the lifting frame 31 is lifted or lowered along the fixed frame 2, and the height of the loading platform 4 can be adjusted. The height of the lifting frame 31 will never be higher than the fixed frame 2, so that it does not need to occupy more upper space, and the possibility of limited use is reduced.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting frame structure for a tool vehicle, comprising a vehicle seat (1), a fixing frame (2), a lifting assembly (3) and a loading platform (4), characterized in that: The fixed frame (2) is fixedly mounted on the vehicle seat (1); the lifting assembly (3) comprises a lifting frame (31), a support shaft (32), a gear (33), a motor (34) and a transmission assembly (35); the lifting frame (31) is slidably mounted on the fixed frame (2); and the loading platform (4) is fixedly mounted on one side of the lifting frame (31); A groove (36) is provided on a side of the lifting frame (31) away from the loading platform (4); the support shaft (32) is rotatably mounted in the groove (36); the gear (33) is fixedly mounted on the support shaft (32); the motor (34) is fixedly mounted in the lifting frame (31); the output shaft of the lifting frame (31) is transmission-connected to the support shaft (32) via a transmission assembly (35); a toothed plate (21) is fixedly mounted inside the fixed frame (2); and the gear (33) is meshingly connected to the toothed plate (21).

2. The lifting frame structure for a tool vehicle according to claim 1, characterized in that: The transmission assembly (35) comprises a worm (351) and a worm wheel (352); the worm (351) is fixedly mounted on the output shaft of the motor (34); and the worm wheel (352) is fixedly mounted on the support shaft (32) and meshingly connected with the worm (351).

3. The lifting frame structure for a tool vehicle according to claim 1, characterized in that: The fixed frame (2) is located on both sides of the tooth plate (21) and is fixedly mounted with guide rods (22), and the lifting frame (31) is slidably sleeved on the guide rods (22).

4. The lifting frame structure for a tool vehicle according to claim 1, characterized in that: A connecting frame (41) is provided on one side of the loading platform (4), and the connecting frame (41) is fixedly mounted to the lifting frame (31) by means of bolts.

5. The lifting frame structure for a tool vehicle according to claim 1, characterized in that: A universal wheel (11) with a brake is installed at the bottom of the vehicle seat (1), and a handrail (12) is fixedly installed at the rear end of the vehicle seat (1).

6. The lifting frame structure for a tool vehicle according to claim 1, characterized in that: A power supply box (13) is installed on the top of the vehicle seat (1) and on one side of the fixing frame (2).

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