Hoisting clamping device and method

Abstract

The invention provides a hoisting clamping device which comprises a main frame body, at least two clamping parts are arranged and distributed on the main frame body in the first direction, each clamping part comprises two symmetrical clamping arms, the two clamping arms are connected to the main frame body in the second direction, and the clamping arms are connected to the main frame body in the first direction. The second direction is perpendicular to the first direction, and the two clamping arms are configured to clamp a hoisted object when approaching each other in the second direction. The invention further provides a hoisting and clamping method. According to the hoisting and clamping method, the hoisting and clamping device is adopted for clamping operation. The lifting appliance has the beneficial effects that the multiple clamping parts are clamped at different positions of a lifted object at the same time, and the state of the lifted object can be fixed.

Description

Technical Field

[0001] The invention relates to the technical field of railway equipment maintenance, and in particular to a hoisting and clamping device and method suitable for a locomotive coupler. Background Art

[0002] During the maintenance of railway equipment, it is often necessary to disassemble and assemble locomotive couplers for inspection and repair. In particular, when shot blasting repair is required, the locomotive coupler needs to be disassembled into the hook tail frame, hook head and other parts. Usually, the disassembly and assembly of locomotive couplers needs to be carried out by hoisting. However, due to the fact that the locomotive coupler, hook tail frame or hook head (such as Figure 4 and Figure 5 The hoisting clamps in the prior art are relatively simple. When hoisting, it is necessary to select a hoisting clamp and a balancing weight method that match the model of the locomotive coupler and its specific components.

[0003] For example, in order to adapt to the lifting of No. 13 coupler, the Chinese utility model patent with publication number CN202321943U designs a lifting device for No. 13 coupler, which is adapted to No. 13 coupler to ensure safety during the lifting and disassembly process.

[0004] However, a single lifting clamp cannot clamp various types of locomotive hooks and their disassembled hook tail frames and hook heads, and cannot achieve universal clamping. Therefore, when disassembling and assembling locomotive hooks, the corresponding type of lifting clamp can only be manually replaced according to the batch of locomotive hooks. The replacement operation is relatively complicated and cumbersome, with low work efficiency and high labor intensity. In addition, the existing lifting clamps have low clamping force and may fall off, posing a major safety hazard.

[0005] Therefore, it is necessary to study a hoisting and clamping device and method suitable for locomotive hooks to solve the above problems or alleviate the impact of the above problems. Summary of the invention

[0006] On one hand, the present invention provides a hoisting clamping device, which can fix the state of the hoisting object by clamping multiple clamping components at different positions of the hoisting object at the same time, so as to effectively solve the above problems or alleviate the impact of the above problems.

[0007] The lifting and clamping device of the present invention may include a main frame, which has at least two clamping components arranged and distributed along a first direction, each of which includes two symmetrical clamping arms, and the two clamping arms are respectively connected to the main frame in a second direction, the second direction is perpendicular to the first direction, and the two clamping arms are constructed to clamp the lifting object when they are close to each other in the second direction.

[0008] In one embodiment, the clamping component also includes a clamping arm connected to the main frame, the clamping arm is arranged between the two clamping arms of the clamping component, and the clamping arm can clamp the hoisted object from a third direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located.

[0009] In one embodiment, the clamping arms are hinged to the main frame, and the clamping arms are configured such that when the hinged portion thereof rotates relative to the main frame, the clamping ends of the two clamping arms approach or move away from each other.

[0010] In one embodiment, the lifting and clamping device also includes a driving component arranged on the main frame, the driving component is connected to the driving end of the clamping arm, the driving end is the end of the hinge opposite to the clamping end, and the driving component can drive the driving end of the clamping arm to rotate around the hinge.

[0011] In one embodiment, the driving assembly includes a driving arm and a driving cylinder, the two ends of the driving arm are respectively hinged to the driving ends of the two clamping arms, and the output end of the driving cylinder is fixedly connected to the middle of the driving arm.

[0012] In one embodiment, a connecting arm is provided between the driving arm and the clamping arm, and two ends of the connecting arm are respectively hinged to one end of the driving arm and the driving end of the clamping arm.

[0013] In one embodiment, a slider is provided in the middle of the driving arm, a slideway extending along a third direction is provided on the main frame, the slider is matched and installed in the slideway, and the slider can slide along the slideway.

[0014] In one embodiment, the hoisting and clamping device further includes a camera, which is connected to one side of the main frame, and the camera can capture and identify the structure and position of the hoisted object.

[0015] In one embodiment, the hoisting and clamping device further includes a control unit, which is electrically connected to the camera and can perform a clamping operation according to identification information of the camera.

[0016] Another aspect of the present invention provides a hoisting and clamping method, which adopts the hoisting and clamping device as described above to perform clamping operations, and at least two clamping components clamp at least two different positions of the hoisted object along the first direction to stabilize the hoisted object.

[0017] Compared with the prior art, the hoisting and clamping device provided by the present invention has at least the following beneficial effects:

[0018] The hoisting clamping device of the present invention clamps the hoisted object at different positions along the first direction through multiple clamping components at the same time, so that the center of gravity of the hoisted object is between the two clamping components in the first direction, and the posture of the hoisted object in the first direction can be balanced, and each clamping component clamps the hoisted object through two clamping arms for relative movement in the second direction, and the posture of the hoisted object in the second direction can be stabilized, thereby achieving the state fixation of the hoisted object. When such a hoisting clamping device is suitable for hoisting a locomotive hook, it can be clamped on both sides of the hook in the width direction through the two clamping arms of the clamping component, and balanced in the length direction through multiple clamping components, and the posture of the hook can be stabilized, and the hook can be prevented from tilting and falling off to the heavier end due to irregularities, thereby improving safety. Based on this, the hoisting clamping device can clamp various types of locomotive hooks and their decomposed hook tail frames and hook heads through the opening and closing of the two clamping arms, and does not need to be replaced during the maintenance process, which can improve work efficiency and reduce labor intensity.

[0019] A hoisting and clamping method provided by the present invention also has the above-mentioned beneficial effects because it includes the above-mentioned hoisting and clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0021] Figure 1 is a three-dimensional structural schematic diagram of a lifting and clamping device according to an embodiment of the present invention;

[0022] Figure 2 is a front view of the lifting and clamping device according to an embodiment of the present invention;

[0023] Figure 3 is a side view of a lifting and clamping device according to an embodiment of the present invention;

[0024] Figure 4 It is a structural diagram of the hook tail frame into which the locomotive hook is decomposed;

[0025] Figure 5 It is a structural schematic diagram of the hook head of a locomotive coupler.

[0026] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0027] Reference numerals:

[0028] 1-main frame, 11-mounting seat, 12-connecting plate, 13-fixing plate, 14-connecting column, 2-clamping component, 21-clamping arm, 22-pressing arm, 23-groove mouth, 24-rotating axis, 3-driving assembly, 31-driving arm, 32-driving cylinder, 33-connecting arm, 34-slider, 35-slide, 4-camera. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] like Figures 1 to 3 As shown, the lifting and clamping device of the present invention may include a main frame 1, and the main frame 1 has at least two clamping parts 2 arranged and distributed along a first direction, each clamping part 2 includes two symmetrical clamping arms 21, and the two clamping arms 21 are respectively connected to the main frame 1 in a second direction, the second direction is perpendicular to the first direction, and the two clamping arms 21 are constructed to clamp the lifting object when they are close to each other in the second direction.

[0032] Specifically, the main frame 1 is a fixed connecting frame of the device, which is both a fixing part for installing the clamping part 2 and a connecting part for connecting the device to a crane or an overhead crane. Two or more clamping parts 2 are connected to the main frame 1 in a first direction, that is, the number of the clamping parts 2 can be multiple, which can be specifically set according to actual conditions. Each clamping part 2 can be composed of two symmetrical clamping arms 21, and the two clamping arms 21 are respectively connected to the main frame 1 in a second direction perpendicular to the first direction, and the two clamping arms 21 can be close to or away from each other in the second direction.

[0033] When such a lifting clamping device is used to clamp a lifting object, multiple clamping components 2 are used to clamp the lifting object at different positions along the first direction at the same time, so that the center of gravity of the lifting object is between the two clamping components 2 in the first direction, that is, the posture of the lifting object in the first direction can be balanced, and each clamping component 2 clamps the lifting object through relative movement in the second direction through two clamping arms 21, which can stabilize the posture of the lifting object in the second direction, thereby achieving the state fixation of the lifting object.

[0034] It should be noted that both the first direction and the second direction are in the horizontal plane, the first direction may be the length direction of the hoisted object, and the second direction may be the width direction of the hoisted object. The center of gravity of the hoisted object is between the two clamping members 2 in the first direction, and is always supported by the two clamping members 2, that is, the balance of the hoisted object in the first direction is ensured.

[0035] Such a hoisting clamping device is suitable for hoisting a locomotive hook. It can be clamped on both sides of the hook in the width direction through the two clamping arms 21 of the clamping component 2, and balanced in the length direction through multiple clamping components 2, which can stabilize the posture of the hook and prevent the hook from tilting and falling off to the heavier end due to irregularities, thereby improving safety. Based on this, the hoisting clamping device can clamp various types of locomotive hooks and their disassembled hook tail frames and hook heads through the opening and closing of the two clamping arms 21. They do not need to be replaced during the maintenance process, which can improve work efficiency and reduce labor intensity.

[0036] It also needs to be explained. Figures 1 to 3 The following embodiments are all described by taking the example that the main frame 1 has two clamping components 2 arranged and distributed along the first direction.

[0037] In an example, Figure 2 As shown, the clamping component 2 also includes a clamping arm 22 connected to the main frame 1, the clamping arm 22 is arranged between the two clamping arms 21 of the clamping component 2, and the clamping arm 22 can clamp the hoisted object from a third direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located.

[0038] Specifically, a clamping arm 22 connected to the main frame 1 is provided between the two clamping arms 21 of each clamping component 2, and the clamping arm 22 can clamp the hoisted object along the third direction, which is the vertical direction perpendicular to the horizontal plane. When the hoisting clamping device clamps the hoisted object, the clamping arm 22 can cooperate with the two clamping arms 21 to confine the hoisted object in the clamping space formed by the three, so as to achieve stable clamping of the hoisted object.

[0039] It should be noted that the two clamping arms 21 not only limit the hoisted object along the second direction when clamping it, but also have a supporting function of lifting the bottom of the hoisted object in the vertical direction, while the clamping arm 22 abuts against the top of the hoisted object and will not actively apply excessive pressure to it.

[0040] The clamping arm 22 can not only cooperate with the two clamping arms 21 to achieve stable clamping of the hoisted object, but also improve the applicable scenarios of the hoisting clamping device. For example, the main frame 1 arranges two clamping components 2 in a first direction, and when clamping the hoisted object, if the center of gravity of the hoisted object is not between the two clamping components 2, one end of the hoisted object wants to tilt downward and the other end wants to tilt upward. At this time, the clamping arm 22 of the clamping component 2 will apply a downward reaction force to the end of the hoisted object that wants to tilt, so that the hoisted object remains stable.

[0041] Furthermore, the clamping arm 22 has the function of telescopic adjustment along the third direction. In this way, the clamping arm 22 cooperates with the two clamping arms 21 to form clamping spaces of different sizes, which are suitable for hoisting objects of different sizes, and further improve the application range of the hoisting clamping device.

[0042] Furthermore, the pressing surface of the pressing arm 22 for contacting the hoisted object has a large friction coefficient, which can further prevent the hoisted object from falling off.

[0043] In an example, Figure 2 As shown, the clamping arm 21 is hinged to the main frame 1, and the clamping arm 21 is constructed so that when the hinge portion thereof rotates relative to the main frame 1, the clamping ends of the two clamping arms 21 approach or move away from each other.

[0044] Specifically, the two clamping arms 21 are both hinged to the main frame 1 and rotate in the vertical plane where the second direction and the third direction are located, so that the clamping ends of the two clamping arms 21 can clamp the hoisted object when they are close to each other, or can release the hoisted object when they are away from each other. That is, the clamping component 2 realizes the clamping function by the way that the clamping arms 21 are rotatably connected to the main frame 1.

[0045] Furthermore, the arm body between the hinge and the clamping end of the clamping arm 21 can be designed to be an arc shape, and the arc openings of the two clamping arms 21 are opposite to each other, so that the two clamping arms 21 cooperate with the clamping arm 22 to form a clamping space for accommodating the hoisted object.

[0046] Furthermore, the clamping end of the clamping arm 21 may be provided with a groove 23, which can clamp the two sides of the bottom of the hoisted object during clamping, so as to form a stable clamping. In addition, the arm body of the clamping arm 21 may be designed as a partially hollow structure, which can reduce the weight of the clamping component 2 and save production costs.

[0047] In an example, Figures 1 to 3 As shown, the lifting and clamping device also includes a driving component 3 arranged on the main frame 1, and the driving component 3 is connected to the driving end of the clamping arm 21, the driving end is the end of the hinge opposite to the clamping end, and the driving component 3 can drive the driving end of the clamping arm 21 to rotate around the hinge.

[0048] Specifically, a certain position in the middle section of the clamping arm 21 is a hinged joint, which is hinged to the main frame 1; one end of the clamping arm 21 is a driving end, which is connected to the driving assembly 3; the other end of the clamping arm 21 is a clamping end, which is used to abut and clamp the hoisted object. The clamping arm 21 is driven by the driving assembly 3 to rotate around its hinged joint, so that the clamping ends of the two clamping arms 21 are close to each other to clamp the hoisted object.

[0049] In an example, Figure 2As shown, the driving assembly 3 includes a driving arm 31 and a driving cylinder 32 . The two ends of the driving arm 31 are respectively hinged to the driving ends of the two clamping arms 21 , and the output end of the driving cylinder 32 is fixedly connected to the middle of the driving arm 31 .

[0050] Specifically, the middle part of the driving arm 31 is fixedly connected to the output end of the driving cylinder 32, and its two ends are respectively hinged to the driving ends of the two clamping arms 21, so that the driving arm 31 drives the clamping arms 21 to rotate under the driving action of the driving cylinder 32, so that the clamping ends of the two clamping arms 21 are close to each other and clamped on both sides of the hoisted object.

[0051] Further, the length direction of the driving arm 31 is arranged along the second direction, and the driving direction of the driving cylinder 32 is telescopic along the third direction. The driving cylinder 32 can be installed on the main frame 1 through the mounting seat 11, and the driving cylinder 32 can be fixedly connected to the driving arm 31 through a piston rod.

[0052] It should be noted that the driving cylinder 32 has a self-locking function. When the two clamping arms 21 stably hold the hoisted object, the driving cylinder 32 locks the position of the piston rod to maintain the stable clamping posture of the clamping arms 21, thereby protecting the hoisted object from falling off and avoiding injuring the operator. The driving cylinder 32 can be a hydraulic cylinder, and the piston rod can be extended and retracted and self-locked by the way of oil in and out.

[0053] In an example, Figure 2 As shown, a connecting arm 33 is provided between the driving arm 31 and the clamping arm 21 , and two ends of the connecting arm 33 are respectively hinged to one end of the driving arm 31 and the driving end of the clamping arm 21 .

[0054] Specifically, a connecting arm 33 is added between the driving arm 31 and the clamping arm 21, and the two ends of the connecting arm 33 are respectively hinged with the end of the driving arm 31 and the driving end of the clamping arm 21 to form a connecting rod mechanism drive, which can increase the force arm to increase the clamping force generated by the thrust of the driving cylinder 32 on the clamping arm 21, and at the same time can increase the rotation angle of the clamping arm 21 relative to the main frame 1, that is, increase the clamping width range of the clamping component 2 to be suitable for more types of hoisting objects. When it is necessary to clamp the hoisting object, the driving cylinder 32 is pushed out to drive the driving arm 31 to move, the driving arm 31 drives the connecting arm 33 to rotate, and the connecting arm 33 drives the clamping arm 21 to rotate, so that the clamping ends of the two clamping arms 21 are close to each other and clamped on both sides of the hoisting object.

[0055] It should be noted that the hinge between the clamping arm 21 and the main frame 1, the hinge between the connecting arm 33 and the clamping arm 21, and the hinge between the connecting arm 33 and the driving arm 31 can all be achieved by the cooperation between the rotating shaft 24 and the rotating hole.

[0056] In an example, Figure 2As shown, a slider 34 is provided in the middle of the driving arm 31 , and a slideway 35 extending along the third direction is provided on the main frame 1 . The slider 34 is matched and installed in the slideway 35 , and the slider 34 can slide along the slideway 35 .

[0057] Specifically, a slider 34 is provided on one side of the middle of the driving arm 31, and a slideway 35 extending along the third direction is provided on the connecting plate 12 of the mounting seat 11 provided on the main frame 1, and the slider 34 is matched and installed in the slideway 35. The slider 34 slides in the slideway 35 as the driving arm 31 is driven by the driving cylinder 32. The driving arm 31 cooperates with the slider 34 and the slideway 35, so that the piston of the driving cylinder 32 and the driving arm 31 can only slide along the third direction, ensuring that there is no deviation, so that the driving assembly 3 can accurately drive the clamping component 2, and then the clamping component 2 can achieve effective clamping, thereby providing the control accuracy of the device.

[0058] It should be noted that each clamping component 2 is provided with a corresponding driving assembly 3, that is, each clamping component 2 is connected to a corresponding driving arm 31 and a driving cylinder 32, so that multiple clamping components 2 can be in different clamping states to be suitable for hoisting objects with irregular shapes.

[0059] In an example, Figures 1 to 3 As shown, the hoisting clamping device also includes a camera 4, which is connected to one side of the main frame 1, and the camera 4 can capture and identify the structure and position of the hoisted object.

[0060] Specifically, the camera 4 can be connected to one side of the main frame 1 through the fixing plate 13, and can also be connected to the mounting seat 11 through the fixing plate 13, so that the camera 4 can be fixedly installed. The camera head of the camera 4 is installed corresponding to the clamping component 2, and can capture and identify the structure and position of the hoisted object, so as to facilitate the control of the clamping component 2 for clamping.

[0061] Furthermore, the camera 4 can be a 3D camera, which can accurately locate the pick-up point by taking pictures, and can assist in moving the clamping component 2 to the specified position for clamping operations. It should be noted that the 3D camera adopts the principle of laser triangulation, and the image acquisition chip collects the contour of the laser line diffusely reflected from the surface of the object to be measured. When the surface of the object to be measured has ups and downs, the imaging of the laser line on the chip will be offset. The camera's built-in high-precision image 3D processing algorithm is used to calculate the three-dimensional contour data of the surface of the object to be measured, and then restore the three-dimensional spatial information of the target object.

[0062] In one example, the hoisting clamping device further includes a control unit (not shown in the drawings), which is electrically connected to the camera 4 , and can perform clamping operations according to identification information of the camera 4 .

[0063] Specifically, the control unit is electrically connected to the camera 4, and can receive the identification information of the camera 4 and perform corresponding analysis and processing; the control unit can also be connected to the driving cylinder 32, and can issue corresponding instructions to control the driving cylinder 32 to perform corresponding driving operations according to the analysis results of the camera 4. The control unit can be controlled by a PLC program.

[0064] In an example, Figure 3 As shown, a connecting column 14 may be fixedly provided in the middle of the main frame 1, and the connecting column 14 is used to connect with a crane or an overhead crane.

[0065] Example 2

[0066] like Figures 1 to 3 As shown, the hoisting and clamping method of the present invention adopts the hoisting and clamping device of the above-mentioned embodiment 1 to perform clamping operations, and at least two clamping components 2 clamp at least two different positions of the hoisted object along the first direction to stabilize the hoisted object.

[0067] Specifically, taking the two clamping parts 2 connected to the main frame 1 as an example, when the hoisting clamping device is used to clamp the hoisting object, the two clamping parts 2 are clamped at two different positions of the hoisting object along the first direction at the same time, so that the center of gravity of the hoisting object is between the two clamping parts 2 in the first direction, so that the hoisting object is always supported by the two clamping parts 2, that is, the posture of the hoisting object in the first direction can be balanced; and each clamping part 2 clamps the two sides of the hoisting object through two clamping arms 21 that move relative to each other in the second direction, which can stabilize the posture of the hoisting object in the second direction. In this way, the hoisting object is in a balanced state in the horizontal plane, that is, the state of the hoisting object can be fixed during hoisting.

[0068] In addition, a clamping arm 22 is provided between the two clamping arms 21 of each clamping component 2. The clamping arm 22 can clamp the hoisted object along the third direction, so that the hoisted object can be confined in the clamping space formed by the clamping arm 22 and the two clamping arms 21, further ensuring the stability of the posture of the hoisted object.

[0069] In summary, the beneficial effects of the hoisting and clamping device and method of the present invention include at least:

[0070] The present invention can be used to clamp various types of locomotive couplers or their disassembled hook tail frames and hook heads through the cooperation of multiple clamping components, which can improve work efficiency, save time, reduce the labor intensity of operators, and also protect the safety of operators; through the specially arranged driving components, the clamping force can be increased, the clamping range can be improved, and self-locking protection can be achieved to prevent the hoisted objects from falling off; through the arrangement of the slider and the slideway and the assistance of the camera, accurate positioning and precise driving can be achieved, and efficient automated production can be realized.

[0071] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hoisting and clamping device, characterized in that: The lifting and clamping device includes a main frame, and the main frame has at least two clamping components arranged along a first direction, each of the clamping components includes two symmetrical clamping arms, and the two clamping arms are respectively connected to the main frame in a second direction, the second direction is perpendicular to the first direction, and the two clamping arms are constructed to clamp the lifting object when they are close to each other in the second direction.

2. The hoisting and clamping device according to claim 1, characterized in that: The clamping component also includes a clamping arm connected to the main frame, the clamping arm is arranged between the two clamping arms of the clamping component, and the clamping arm can clamp the hoisted object from a third direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located.

3. The hoisting and clamping device according to claim 1, characterized in that: The clamping arms are hinged to the main frame, and the clamping arms are configured so that when the hinged portion thereof rotates relative to the main frame, the clamping ends of the two clamping arms approach or move away from each other.

4. The hoisting and clamping device according to claim 3, characterized in that: The lifting and clamping device also includes a driving component arranged on the main frame, the driving component is connected to the driving end of the clamping arm, the driving end is the end of the hinge opposite to the clamping end, and the driving component can drive the driving end of the clamping arm to rotate around the hinge.

5. The hoisting and clamping device according to claim 4, characterized in that: The driving assembly comprises a driving arm and a driving cylinder. The two ends of the driving arm are respectively hinged to the driving ends of the two clamping arms, and the output end of the driving cylinder is fixedly connected to the middle of the driving arm.

6. The hoisting and clamping device according to claim 5, characterized in that: A connecting arm is provided between the driving arm and the clamping arm, and two ends of the connecting arm are respectively hinged to one end of the driving arm and the driving end of the clamping arm.

7. The hoisting and clamping device according to claim 5, characterized in that: A slider is provided in the middle of the driving arm, and a slideway extending along a third direction is provided on the main frame. The slider is matched and installed in the slideway, and the slider can slide along the slideway.

8. The hoisting and clamping device according to claim 1, characterized in that: The hoisting clamping device also includes a camera, which is connected to one side of the main frame and can capture and identify the structure and position of the hoisted object.

9. The hoisting and clamping device according to claim 8, characterized in that: The hoisting clamping device also includes a control unit, which is electrically connected to the camera and can perform a clamping operation according to the identification information of the camera.

10. A hoisting and clamping method, characterized in that: The hoisting and clamping method adopts the hoisting and clamping device as described in any one of claims 1 to 9 to perform clamping operations, and at least two clamping components clamp at least two different positions of the hoisted object along the first direction to stabilize the hoisted object.

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