A labor-saving device and straightening system for a single leaf spring

Abstract

The present invention relates to a labor-saving device for straightening a single leaf spring and a straightening system. The labor-saving device for straightening comprises a fixed base and a lifting platform. The lifting platform is connected to the fixed base via a lifting drive mechanism. The lifting drive mechanism is used to drive the lifting platform to rise or fall. The fixed base is used to place a material frame, and the material frame is used to stack single leaf springs. The lifting platform is used to lift or lower the single leaf spring while ensuring that the material frame is stationary. The present invention drives the single leaf spring to rise and fall via the lifting platform, and intermittently moves the single leaf spring to a suitable height at the feeding end of the straightening machine, which is convenient for manual continuous picking up of the single leaf spring, and intermittently lowers the single leaf spring at the discharging end of the straightening machine and intercepts the single leaf spring at a suitable height, which is convenient for manual stacking of the single leaf spring. Therefore, the labor intensity of operators can be effectively reduced, and the safety of picking up, moving and placing the single leaf spring can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of leaf spring production, and in particular to a leaf spring single-piece straightening labor-saving device and a straightening system. Background Art

[0002] The leaf spring is composed of several alloy leaf spring steel plates of unequal lengths to form an approximately equal-strength elastic beam. When the leaf spring steel plates are arranged longitudinally on the car, they act as elastic elements and guide mechanisms, transmitting various forces and moments, and can use the friction between the plates to reduce vibration.

[0003] In the production process of leaf spring steel plates, it is necessary to straighten the single leaf spring. However, the existing single leaf spring straightening and loading and unloading of automobile leaf springs is done manually (single leaf weight: 25-55kg), which completely relies on the physical strength of the operators to pick up, move, and place the single leaf spring. Not only does it consume a lot of physical energy for the operators, but it also reduces the operating efficiency per unit time and poses inevitable safety hazards. Summary of the invention

[0004] Based on the above description, the present invention provides a labor-saving device and straightening system for straightening a single leaf spring, which drives the single leaf spring to rise through a lifting platform to facilitate manual stacking of the single leaf spring, so that the operators can pick up and place the single leaf spring at a suitable height, which can effectively reduce the labor intensity of the operators and improve the safety of picking up, moving and placing the single leaf spring.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a labor-saving device for straightening a single leaf spring, comprising a fixed base and a lifting platform, wherein the lifting platform is connected to the fixed base via a lifting drive mechanism, and the lifting drive mechanism is used to drive the lifting platform to rise or fall; the fixed base is used to place a material frame, and the material frame is used to stack single leaf springs; the lifting platform is used to lift or lower the single leaf spring while ensuring that the material frame is stationary.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the two opposite sides of the material frame are hollowed out so that both ends of the leaf spring extend out from the hollow sides of the material frame; the lifting platform includes two supporting parts, which are respectively located on the opposite sides of the material frame, and are used to push the leaf spring to extend out of the two ends of the material frame to rise or fall.

[0008] Furthermore, the lifting platform also includes a connecting portion, and two ends of the connecting portion are respectively connected to the two supporting portions.

[0009] Furthermore, a forklift chassis is provided at the bottom of the material frame for easy transportation by forklift.

[0010] Furthermore, the fixed base is installed in a pre-dug pit, and the top surface of the fixed base is flush with the ground.

[0011] Furthermore, when the lifting platform moves to the lowest point, the lifting platform is located in the pit, and the top of the lifting platform is also flush with the ground.

[0012] Furthermore, when the lifting platform moves to the lowest point, the lifting platform and the fixed base fill the opening of the pit.

[0013] Furthermore, the lifting drive mechanism includes a connecting rod telescopic bracket, and the lifting platform is driven to rise or fall by the extension and retraction of the connecting rod telescopic bracket.

[0014] Furthermore, the lifting drive mechanism also includes an oil tank, an oil pump, a motor, a support valve and a hydraulic cylinder; the hydraulic cylinder is used to drive the connecting rod telescopic bracket to extend and retract; the motor is connected to the oil pump; the oil pump is connected to the oil tank and the hydraulic cylinder, and the support valve is installed between the oil pump and the hydraulic cylinder.

[0015] The present invention further proposes a single-piece leaf spring straightening system, comprising a straightening machine, wherein the feeding end and the discharging end of the straightening machine are both provided with any one of the above-mentioned single-piece leaf spring straightening labor-saving devices.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] The present invention drives the leaf spring single piece to rise and fall through the lifting platform, and intermittently moves the leaf spring single piece to a suitable height at the feed end of the straightening machine, which is convenient for manual continuous picking up of the leaf spring single piece, and intermittently lowers the leaf spring single piece at the discharge end of the straightening machine and receives the leaf spring single piece at a suitable height, which is convenient for manual stacking of the leaf spring single piece. Therefore, the labor intensity of the operating personnel can be effectively reduced, and the safety of picking up, moving and placing the leaf spring single piece is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural schematic diagram of a leaf spring single-piece straightening system provided by an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A top view of

[0020] Figure 3 A schematic structural diagram of a leaf spring single-piece straightening and labor-saving device provided by an embodiment of the present invention;

[0021] Figure 4 It is a hydraulic principle diagram of the lifting drive mechanism in the embodiment of the present invention;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Straightening machine; 2. Straightening labor-saving device; 21. Fixed base; 22. Lifting platform; 221. Support part; 222. Connecting part; 23. Lifting drive mechanism; 231. Connecting rod telescopic bracket; 232. Oil tank; 233. Oil pump; 234. Motor; 235. Support valve; 236. Hydraulic cylinder; 3. Material frame. DETAILED DESCRIPTION

[0024] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0029] A leaf spring single-piece 4 straightening system comprises a straightening machine 1 and a straightening labor-saving device 2. The straightening labor-saving device 2 is installed at the feed end and / or the discharge end of the straightening machine 1. In this embodiment, the straightening labor-saving device 2 is installed at both the feed end and the discharge end of the straightening machine 1.

[0030] The straightening labor-saving device 2 near the feed end of the straightening machine 1 is used to receive the material frame 3 on which the leaf spring single sheets 4 to be straightened are stacked, and under the premise of ensuring that the material frame 3 does not move, the leaf spring single sheets 4 are intermittently lifted, and the top leaf spring single sheets 4 are continuously lifted to a suitable height, so that the operator can move the top leaf spring single sheet 4 to the feed end of the straightening machine 1 conveniently.

[0031] The straightening machine 1 moves the leaf spring single piece 4 from the feeding end to the discharging end, and straightens the leaf spring single piece 4 during the movement of the leaf spring single piece 4.

[0032] The straightening labor-saving device 2 near the discharge end of the straightening machine 1 is used to receive the leaf spring single piece 4 straightened by the straightening machine 1. After the operator places the leaf spring single piece 4 in the material frame 3 placed on the straightening labor-saving device 2, the straightening labor-saving device 2 drives the leaf spring single piece 4 to descend a certain distance, so that the operator can place the leaf spring single piece 4 at a suitable height each time, and finally move the leaf spring single piece 4 to the bottom of the material frame 3, so that the material frame 3 is full of straightened leaf spring single pieces 4.

[0033] Specifically, each straightening labor-saving device 2 includes a fixed base 21 and a lifting platform 22. The fixed base 21 and the lifting platform 22 are connected via a lifting drive mechanism 23. The lifting drive mechanism 23 is used to drive the lifting platform 22 to rise and fall.

[0034] In this embodiment, pits are pre-dug on the ground at the feed end and the discharge end of the straightening machine 1, and the two straightening labor-saving devices 2 are respectively installed in the two pits, and the top of the fixed base 21 is flush with the ground, so that the material frame 3 can be easily placed on the fixed base 21 or the material frame 3 on the fixed base 21 can be removed by a forklift. When the lifting platform 22 moves to the bottom, the top of the lifting platform 22 is also flush with the ground to avoid obstruction to the forklift and the operator. In addition, the lifting platform 22 and the fixed base 21 fill the opening of the pit, so that when the lifting platform 22 moves to the bottom, the entire straightening labor-saving device 2 is hidden below the ground.

[0035] In this embodiment, the two opposite sides of the material frame 3 are hollowed out, and the two ends of the leaf spring single piece 4 extend out from the two hollow sides of the material frame 3 respectively. The other two opposite sides of the material frame 3 limit the leaf spring single piece 4, so that the leaf spring single piece 4 moves up and down in the vertical direction. The bottom of the material frame 3 is detachably fixed to the fixed base 21 by a dead point clamp, and a forklift chassis is provided at the bottom of the material frame 3, which is convenient for transporting the material frame 3 by a forklift. The lifting platform 22 includes a connecting portion 222 and two supporting portions 221. The two supporting portions 221 are both perpendicular to the leaf spring single piece 4, and the two supporting portions 221 are symmetrically located on both sides of the material frame 3, respectively. The two supporting portions 221 support the two ends of the leaf spring single piece 4 extending out of the material frame 3.

[0036] The lifting drive mechanism 23 includes a connecting rod telescopic bracket 231, and the two support parts 221 are each connected to the fixed base 21 through a connecting rod telescopic bracket 231. The lifting platform 22 can be driven to rise or fall by the extension and contraction of the connecting rod telescopic bracket 231, thereby driving the leaf spring single piece 4 to rise or fall, while keeping the material frame 3 stationary.

[0037] In addition, the connecting portion 221 connects the two supporting portions 221. In this embodiment, the connecting portion 221 is located on the other side of the material frame 3, and the two ends of the connecting portion 222 are respectively connected to one end of the two supporting portions 221, so that the entire lifting platform 22 is U-shaped. The connecting portion 222 connects the entire lifting platform 22 as a whole, and the two connecting rod telescopic brackets 231 synchronously drive the lifting platform 22 to rise and fall from both sides, so that the lifting platform 22 is more stable.

[0038] The lifting drive mechanism 23 also includes an oil tank 232, an oil pump 233, a motor 234, a support valve 235 and a hydraulic cylinder 236. The oil tank 232, the oil pump 233, the motor 234 and the support valve 235 are all installed in the fixed base 21. The two ends of the hydraulic cylinder 236 are respectively hinged on the two connecting rods of the connecting rod telescopic bracket 231, and are used to drive the connecting rod telescopic bracket 231 to extend and retract. The motor 234 is connected to the oil pump 233, and is used to drive the oil pump 233 to operate. The oil pump 233 is connected to the oil tank 232 and the hydraulic cylinder 236, and a support valve 235 is installed between the oil pump 233 and the hydraulic cylinder 236. The support valve 235 is a two-position two-way solenoid valve.

[0039] When the lifting platform 22 needs to rise, the motor 234 drives the oil pump 233 to operate, and the hydraulic oil is drawn from the oil tank 232, passes through the filter, is pressurized by the oil pump, flows through the one-way valve and enters the lower chamber of the hydraulic cylinder 236, so that the connecting rod telescopic bracket 231 is extended, so that the lifting platform 22 rises and lifts the leaf spring single piece 4 upward. At this time, the support valve 235 is not energized.

[0040] When the lifting platform 22 needs to be lowered, the support valve 235 is energized, and the hydraulic oil of the hydraulic cylinder 236 flows back to the oil tank through the support valve 235. The lifting platform 22 is lowered under the action of gravity, the connecting rod telescopic bracket 231 is shortened, and the leaf spring single piece 4 is lowered together with the lifting platform 22. At this time, the motor 234 is not energized, and the oil pump 233 does not work.

[0041] The present invention installs a straightening labor-saving device 2 at the feed end and the discharge end of the straightening machine 1, and drives the leaf spring single piece 4 to rise and fall through the lifting platform 22 of the straightening labor-saving device 2. The leaf spring single piece 4 is intermittently moved to a suitable height at the feed end of the straightening machine 1, which is convenient for manual continuous picking up of the leaf spring single piece 4, and the leaf spring single piece 4 is intermittently lowered at the discharge end of the straightening machine 1 and the leaf spring single piece 4 is received at a suitable height, which is convenient for manual stacking of the leaf spring single piece 4, thereby effectively reducing the labor intensity of the operating personnel and improving the safety of picking up, moving and placing the leaf spring single piece 4.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A single leaf spring straightening and labor-saving device, characterized in that: The lifting platform (22) comprises a fixed base (21) and a lifting platform (22), wherein the lifting platform (22) is connected to the fixed base (21) via a lifting drive mechanism (23), and the lifting drive mechanism (23) is used to drive the lifting platform (22) to rise or fall; the fixed base (21) is used to place a material frame (3), and the material frame (3) is used to stack leaf spring sheets; the lifting platform (22) is used to lift or lower the leaf spring sheet while ensuring that the material frame (3) is stationary; the material frame (3) The two opposite sides are hollowed out so that both ends of the leaf spring single piece extend out from the hollowed-out sides of the material frame (3); the lifting platform (22) comprises two supporting parts (221), the two supporting parts (221) are respectively located on the two opposite sides of the material frame (3), and are used to push the two ends of the leaf spring single piece extending out of the material frame (3) to rise or fall respectively; the lifting platform (22) also comprises a connecting part (222), the two ends of the connecting part (222) are respectively connected to the two supporting parts (221).

2. A leaf spring single-piece straightening and labor-saving device according to claim 1, characterized in that: A forklift chassis is provided at the bottom of the material frame (3) for easy transportation by a forklift.

3. A leaf spring single-piece straightening and labor-saving device according to claim 1, characterized in that: The fixed base (21) is installed in a pre-dug pit, and the top surface of the fixed base (21) is flush with the ground.

4. A leaf spring single-piece straightening and labor-saving device according to claim 3, characterized in that: When the lifting platform (22) moves to the lowest position, the lifting platform (22) is located in the pit, and the top of the lifting platform (22) is also flush with the ground.

5. A leaf spring single-piece straightening and labor-saving device according to claim 4, characterized in that: When the lifting platform (22) moves to the lowest position, the lifting platform (22) and the fixed base (21) fill the opening of the pit.

6. A leaf spring single-piece straightening labor-saving device according to claim 1, characterized in that: The lifting drive mechanism (23) comprises a connecting rod telescopic bracket (231), and the lifting platform (22) is driven to rise or fall by the extension and retraction of the connecting rod telescopic bracket (231).

7. A leaf spring single-piece straightening and labor-saving device according to claim 6, characterized in that: The lifting drive mechanism (23) further comprises an oil tank (232), an oil pump (233), a motor (234), a support valve (235) and a hydraulic cylinder (236); the hydraulic cylinder (236) is used to drive the connecting rod telescopic support (231) to extend and retract; the motor (234) is connected to the oil pump (233); the oil pump (233) is connected to the oil tank (232) and the hydraulic cylinder (236), and the support valve (235) is installed between the oil pump (233) and the hydraulic cylinder (236).

8. A leaf spring single-piece straightening system, characterized in that: It comprises a straightening machine (1), wherein both the feeding end and the discharging end of the straightening machine (1) are provided with a leaf spring single-piece straightening labor-saving device as claimed in any one of claims 1 to 7.

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