A non-powered lifting device

Abstract

The present invention discloses a non-powered sling, comprising a sling frame, a telescopic connecting rod, a support rod and two claw handle rods symmetrically arranged on both sides of the sling frame, the upper ends of the two claw handle rods are respectively rotatably connected to one side of the sling frame, the lower ends of the two claw handle rods are respectively fixedly connected to the vehicle body in a releasable manner, the telescopic connecting rod comprises a first connecting rod, a second connecting rod and a third connecting rod which are movably connected in sequence, the left end of the first connecting rod is fixedly connected to the claw handle rod on the left side, the right end of the third connecting rod is fixedly connected to the claw handle rod on the right side, the support rod is fixedly penetrated in the center of the sling frame and its lower end is movably connected to the middle part of the second connecting rod, the connection between the first connecting rod and the second connecting rod is provided with a positioning rope with a fixed upper end position, and the connection between the second connecting rod and the third connecting rod is provided with a spring with a fixed upper end position. The non-powered sling of the present invention has a simple structure, low cost, reduces the number of operators, shortens the hanging and taking time, and eliminates safety hazards.

Description

Technical Field

[0001] The invention relates to a sling, in particular to an unpowered sling. Background Art

[0002] When welding or maintenance work is required on the car body, the car body needs to be lifted and moved from one assembly platform to another. Although the lifting equipment driven by hydraulic motors, hydraulic cylinders or electric motors has a high degree of automation, it has a complex structure and high cost. At the same time, the installation of power equipment will increase the signal transmission and action time. At present, the front car body uses a manual lifting equipment, which is connected to the front car body with a flexible hook of an iron chain. Each assembly platform has an employee who manually operates and removes the lifting equipment, which has the following problems:

[0003] 1. The work is simple and the efficiency is low. It takes 6 seconds for employees to take and hang the hook.

[0004] 2. There is a high risk of squeezing during manual hook removal;

[0005] 3. Other employees on the production line have to wait for a long time during the hoisting operation. Summary of the invention

[0006] The present invention is completed to solve the deficiencies in the prior art. The purpose of the present invention is to provide an unpowered sling with a simple structure and low cost, which reduces the number of personnel operating the sling, shortens the sling hanging time, and eliminates the safety hazards in the manual hanging process.

[0007] The cam is connected with the second end of the second link to form a rotation angle between the two ends of the cam and the second end of the cam, and the rotation angle between the two ends of the cam is set to 40, and the limit of each end is set to be adjusted according to the situation of the two ends of the cam.

[0008] A non-powered lifting device of the present invention may also be:

[0009] A hook is fixedly provided at the lower end of the claw handle bar, and the claw handle bar is releasably fixedly connected to the vehicle body via the hook.

[0010] The claw hand lever includes a first suspension rod and a second suspension rod arranged vertically, and a cross bar arranged horizontally, the first suspension rod, the second suspension rod and the cross bar are symmetrically arranged on both sides of the sling frame, the cross bar is fixedly arranged between the first suspension rod and the second suspension rod, and the two ends of the cross bar are respectively fixedly connected to the middle upper part of the first suspension rod and the middle upper part of the second suspension rod, the upper ends of the first suspension rod and the second suspension rod are respectively movably connected to one side of the sling frame, the lower ends of the first suspension rod and the second suspension rod are respectively releasably fixedly connected to the vehicle body, the left end of the first connecting rod is fixedly connected to the middle part of the cross bar on the left side of the sling frame, and the right end of the third connecting rod is fixedly connected to the middle part of the cross bar on the right side of the sling frame.

[0011] The upper end of the claw handle is hinged to one side of the sling frame.

[0012] Hinge shafts are respectively arranged on both sides of the sling frame, and the front and rear ends of the hinge shafts are respectively fixedly connected to one side of the sling frame, and the upper end of the claw handle bar is rotatably connected to the hinge shafts.

[0013] The cam is connected with the second end of the second link to form a rotation angle between the two ends of the cam and the second end of the cam, and the rotation angle between the two ends of the cam is set to 40, and the limit of each end is set to be adjusted according to the situation of the two ends of the cam. In this way, the vehicle body is grasped and released by opening and clamping the two claw hand rods arranged on both sides of the spreader frame. The telescopic connecting rod is used to connect the claw hand rods on both sides. The telescopic connecting rod contracts to shorten the distance between the two claw hand rods (clamping the claw hand rods) to realize grasping of the vehicle body, and the telescopic connecting rod extends to increase the distance between the two claw hand rods (opening the claw hand rods) to release the vehicle body. The contraction and extension of the telescopic connecting rod are realized by the positioning rope and the spring. After the specific spreader is lowered into place, the positioning rope is straightened under the action of gravity. At this time, the connection between the first connecting rod and the second connecting rod is pulled upward by the positioning rope, and the second connecting rod can support The lower end of the support rod rotates as the center, the left end of the second connecting rod moves upward, the right end of the second connecting rod moves downward, the spring is in a stretched state, thereby realizing the contraction of the telescopic connecting rod, the two claw hand rods clamp and grab the car body and lift the car body to move to the working platform, when the sling moves to the top of the working platform and starts to descend, when the sling descends to a certain position, the car body is placed on the platform, at this time the positioning rope is not straightened, the spring is in a stretched state, the connection between the second connecting rod and the third connecting rod is subjected to the upward pulling force of the spring, the right end of the second connecting rod moves upward, the telescopic connecting rod is extended, the claw hand rod is opened and separated from the car body. In this way, the sling realizes automatic hanging and taking by using its own weight and the elastic force of the spring as the power source, without the need for power equipment, simple structure, reduced cost, avoiding the increase of signal transmission and action time due to power equipment, and no manual operation is required to connect the sling with the car body, reducing the number of people operating the sling, shortening the hanging and taking time of the sling, and eliminating the safety hazards in the manual hanging and taking process. Compared with the prior art, the unpowered sling of the present invention has the following advantages: simple structure, low cost, reduced number of personnel operating the sling, shortened sling hanging time, and eliminated potential safety hazards in the manual hanging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic structural diagram of an unpowered hanger.

[0015] Description of Figure Number

[0016] 1…Spreader frame 2…Telescopic connecting rod 3…Support rod

[0017] 4…claw lever 5…first connecting rod 6…second connecting rod

[0018] 7…Third connecting rod 8…Positioning rope 9…Spring

[0019] 10…Hook 11…First suspension rod 12…Second suspension rod

[0020] 13…crossbar DETAILED DESCRIPTION

[0021] Combine the following Figure 1 , a non-powered spreader of the present invention is described in further detail.

[0022] A non-powered lifting device of the present invention, please refer to Figure 1, including a sling frame 1, a telescopic link 2, a support rod 3 and two claw hand rods 4 symmetrically arranged on both sides of the sling frame 1, the upper ends of the two claw hand rods 7 are respectively rotatably connected to one side of the sling frame 1, and the lower ends of the two claw hand rods 7 are respectively fixedly connected to the vehicle body in a releasable manner. The telescopic link 2 includes a first link 5, a second link 6 and a third link 7. The left end of the first link 5 is fixedly connected to the claw hand rod 7 on the left side, the right end of the first link 5 is movably connected to the left end of the second link 6, the right end of the second link 6 is movably connected to the left end of the third link 7, and the right end of the third link 7 is fixedly connected to the claw hand rod 7 on the right side. The support rod 3 is fixedly penetrated in the center of the sling frame 1, and the lower end of the support rod 3 is movably connected to the middle part of the second link 6. A positioning pull rope 8 with a fixed upper end position is provided at the connection between the first link 5 and the second link 6, and a spring 9 with a fixed upper end position is provided at the connection between the second link 6 and the third link 7. In this way, the vehicle body can be grasped and released by opening and clamping the two claw hand rods 7 arranged on both sides of the sling frame 1. The telescopic link 2 is used to connect the claw hand rods 7 on both sides. The telescopic link 2 contracts and shortens the distance between the two claw hand rods 7 (the claw hand rods 7 are clamped) to realize the grasping of the vehicle body. The telescopic link 2 extends and increases the distance between the two claw hand rods 7 (the claw hand rods 7 are opened) to release the vehicle body. The contraction and extension of the telescopic link 2 are realized by the positioning rope 8 and the spring 9. After the specific sling is lowered into place, the positioning rope 8 is straightened under the action of gravity. At this time, the connection between the first link 5 and the second link 6 is subjected to the upward pulling force of the positioning rope 8, and the second link 6 can The support rod 3 rotates with the lower end as the center, the left end of the second link 6 moves upward, the right end of the second link 6 moves downward, the spring 9 is in a stretched state, thereby realizing the contraction of the telescopic link 2, the two claw hand rods 7 clamp and grab the car body and lift the car body to move to the work platform, when the sling moves to the top of the work platform and starts to descend, when the sling descends to a certain position, the car body is placed on the platform, at this time the positioning rope 8 is not straightened, the spring 9 is in a stretched state, the connection between the second link 6 and the third link 7 is subjected to the upward pulling force of the spring 9, the right end of the second link 6 moves upward, the telescopic link 2 is extended, and the claw hand rod 7 is opened and separated from the car body. In this way, the sling realizes automatic hanging by using its own weight and the elastic force of the spring 9 as the power source, without the need for power equipment, with a simple structure, reduced costs, and avoided the signal transmission and action time increased by the power equipment. At the same time, there is no need to manually operate the connection between the sling and the car body, reducing the number of people operating the sling, shortening the hanging time of the sling, and eliminating the safety hazards in the manual hanging process. Compared with the prior art, the unpowered sling of the present invention has the following advantages: simple structure, low cost, reduced number of personnel operating the sling, shortened sling hanging time, and eliminated potential safety hazards in the manual hanging process.

[0023] The present invention is a non-powered lifting device, based on the technical solution described above, please refer to Figure 1 Alternatively, a hook 10 is fixedly disposed at the lower end of the claw handle 7, and the claw handle 7 is releasably fixedly connected to the vehicle body through the hook 10. Thus, compared with the prior art, the original flexible iron chain hook 10 is eliminated, and a rigid hook 10 is adopted, so that there is no need for manual operation of the connection between the sling and the vehicle body, the number of operators for operating the sling is reduced, and the time for hanging and removing the sling is shortened.

[0024] The present invention is a non-powered lifting device, based on the technical solution described above, please refer to Figure 1 , it can also be: the claw hand lever 7 includes a first suspension rod 11 and a second suspension rod 12 arranged vertically, and a cross bar 13 arranged horizontally, the first suspension rod 11, the second suspension rod 12 and the cross bar 13 are respectively symmetrically arranged on both sides of the sling frame 1, the cross bar 13 is fixedly arranged between the first suspension rod 11 and the second suspension rod 12, and the two ends of the cross bar 13 are respectively fixedly connected to the middle and upper parts of the first suspension rod 11 and the middle and upper parts of the second suspension rod 12, the upper ends of the first suspension rod 11 and the second suspension rod 12 are respectively movably connected to one side of the sling frame 1, the lower ends of the first suspension rod 11 and the second suspension rod 12 are respectively releasably fixedly connected to the car body, the left end of the first connecting rod 5 is fixedly connected to the middle part of the cross bar 13 on the left side of the sling frame 1, and the right end of the third connecting rod 7 is fixedly connected to the middle part of the cross bar 13 on the right side of the sling frame 1. In this way, by setting four rods connected to the vehicle body, the structure is more stable, the cross bar 13 is used to connect the first suspension rod 11 and the second suspension rod 12, and the two ends of the telescopic link 2 are connected to the cross bar 13, and the structure is simple and stable.

[0025] The present invention is a non-powered lifting device, based on the technical solution described above, please refer to Figure 1 , it can also be that: the upper end of the claw hand rod 7 is hinged to one side of the sling frame 1. In this way, the structure is simple, so that the claw hand rod 7 can rotate around one side of the sling frame 1 to achieve the clamping and opening action between the two claw hand rods 7. On the basis of the technical solution described above, it is further preferred that the two sides of the sling frame 1 are respectively provided with hinge shafts, and the front and rear ends of the hinge shafts are respectively fixedly connected to one side of the sling frame 1, and the upper end of the claw hand rod 7 can be rotatably connected to the hinge shaft. In this way, by arranging hinge shafts on both sides of the sling frame 1 to connect the claw hand rods 7 on the left and right sides, the claw hand rod 7 can rotate around the hinge shaft to achieve the clamping and opening action between the two claw hand rods 7.

[0026] The above only describes the specific embodiments of the present invention, but cannot be regarded as the protection scope of the present invention. Any equivalent changes or modifications made according to the design spirit of the present invention should be considered to fall within the protection scope of the present invention.

Claims

1. A non-powered spreader, characterized in that: The cam is connected to the chassis and the cam is connected to the chassis by the second linkage, and the second linkage is connected to the chassis by the second linkage. The second connecting rod rotates around the lower end of the supporting rod, and when the positioning rope pulls one end of the second connecting rod upward, the other end of the second connecting rod moves downward and stretches the spring.

2. The unpowered spreader according to claim 1, characterized in that: A hook is fixedly provided at the lower end of the claw handle bar, and the claw handle bar is releasably fixedly connected to the vehicle body via the hook.

3. The unpowered spreader according to claim 1, characterized in that: The claw hand lever includes a first suspension rod and a second suspension rod arranged vertically, and a cross bar arranged horizontally, the first suspension rod, the second suspension rod and the cross bar are symmetrically arranged on both sides of the sling frame, the cross bar is fixedly arranged between the first suspension rod and the second suspension rod, and the two ends of the cross bar are respectively fixedly connected to the middle upper part of the first suspension rod and the middle upper part of the second suspension rod, the upper ends of the first suspension rod and the second suspension rod are respectively movably connected to one side of the sling frame, the lower ends of the first suspension rod and the second suspension rod are respectively releasably fixedly connected to the vehicle body, the left end of the first connecting rod is fixedly connected to the middle part of the cross bar on the left side of the sling frame, and the right end of the third connecting rod is fixedly connected to the middle part of the cross bar on the right side of the sling frame.

4. The unpowered spreader according to any one of claims 1 to 3, characterized in that: The upper end of the claw handle is hinged to one side of the sling frame.

5. The unpowered spreader according to claim 4, characterized in that: Hinge shafts are respectively arranged on both sides of the sling frame, and the front and rear ends of the hinge shafts are respectively fixedly connected to one side of the sling frame, and the upper end of the claw handle bar can be rotatably connected to the hinge shafts.

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