Automatic feeding and discharging device for crankshafts
Through the three-axis motion and elevation adjustment technology of the automated loading and unloading device, the poor accuracy and personal safety of the crankshaft forging loading and unloading device are solved, and automatic loading and unloading and efficient crankshaft transport are realized, which is suitable for the safety of high-temperature environments in the crankshaft forging process. Requirements for performance and accuracy.
Patent Information
- Application Number
- CN202420005420.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-02
AI Technical Summary
The existing crankshaft forging loading and unloading devices have poor lifting accuracy and pose a threat to the personal safety of the operators when manually participating in lifting and transporting.
An automated loading and unloading device is designed, including guide rails, transfer trucks, drive mechanisms, hoisting mechanisms, elevation adjustment mechanisms and clamping mechanisms. The precise crankshaft clamping and transport is achieved through three-axis movement, reducing the need for the site and avoiding the Artificial contact with high temperature crankshaft.
It realizes automatic loading and unloading of crankshaft forging operations, improves lifting accuracy, reduces the demand for the site, and ensures the safety of operators.
Smart Images
Figure CN222158963U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of crankshaft forging line loading devices, and more specifically, relates to an automatic loading and unloading device for crankshafts. Background Art
[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. In order to obtain a crankshaft with better mechanical properties, the existing crankshaft production adopts stamping technology for forging. When loading and unloading the crankshaft forging, an overhead crane is generally used for lifting and transporting.
[0003] However, when using an overhead crane for lifting and transfer operations, there are the following problems: (1) The site requirements are high and the lifting accuracy is poor, and the crankshaft cannot be accurately transferred to the forging platform or material placement area; (2) The temperature of the crankshaft after forging is high, and manual clamping is difficult. Manual lifting and transfer with the help of an overhead crane can easily affect the personal safety of the operators.
[0004] Therefore, at this stage, there is an urgent need for an automated loading and unloading device for crankshafts, which can automatically load and unload crankshafts while reducing the demand for space, thereby ensuring the personal safety of operators. Utility Model Content
[0005] Aiming at the problems that the loading and unloading devices for crankshaft forging in the prior art have poor lifting accuracy and are likely to affect the personal safety of operators, the utility model provides an automatic loading and unloading device for crankshafts to solve such problems.
[0006] To achieve the above-mentioned purpose, the utility model provides an automatic loading and unloading device for crankshafts, comprising a guide rail arranged on the ground; a transfer vehicle arranged on the guide rail, which is driven by a driving mechanism to move linearly along the X direction; and a lifting mechanism, a tray, a top plate, an arm span adjustment mechanism and a clamping mechanism arranged above the transfer vehicle from bottom to top; wherein the lifting mechanism drives the lifting mechanism to move linearly along the Y direction; one end of the top plate is hinged to the tray, and the elevation angle between the two is adjusted by an elevation adjustment mechanism; the arm span adjustment mechanism comprises a slide rail and a slider, and the slider is fixedly connected to the clamping mechanism, thereby driving the clamping mechanism to move linearly along the Z direction to adjust its arm span range; the clamping mechanism comprises a movable claw and a fixed claw, and the crankshafts of different diameters are clamped by opening and closing the movable claw.
[0007] Furthermore, the clamping mechanism clamps the crankshaft, and includes a fixed arm, a movable arm, a third cylinder, a connecting rod, a movable claw and a fixed claw.
[0008] Furthermore, the bottom of the fixed arm is fixedly connected to the slider, and a first pin hole and a fixing hole are sequentially provided at the front end thereof; the rear end of the movable arm is fixedly connected to the piston rod of the third cylinder, and a second pin hole is provided at the front end thereof; the third cylinder is hinged to the rear end of the top of the fixed arm, and its piston rod drives the movable arm to move forward or backward; the two ends of the connecting rod are respectively fixedly connected to the sides of the two groups of fixed arms, and the rear side thereof is fixedly connected to the arm span adjustment mechanism; the upper end of the movable claw is hinged to the front end of the movable arm through the second pin hole, and the middle part is hinged to the front end of the fixed arm through the first pin hole; the fixed claw is fixedly connected to the fixed arm through the fixing hole.
[0009] Furthermore, the elevation angle adjustment mechanism includes a second cylinder, a first articulated seat, a second articulated seat and a third articulated seat; the bottom of the second cylinder is hinged to the front end of the top of the transfer vehicle through the first articulated seat, and its top passes through the pallet and is hinged to the front end of the bottom of the top plate by the second articulated seat; the third articulated seat is fixed at the rear end of the top of the pallet, and the top plate is articulated to the pallet through the third articulated seat.
[0010] Furthermore, the lifting mechanism lifts and lowers the clamping mechanism in the vertical direction, and includes a first cylinder and a telescopic rod; the first cylinder is fixedly arranged at the center of the top of the transfer vehicle, and its first piston end is fixedly connected to the bottom of the pallet; the telescopic rod is provided with four groups, which are symmetrically arranged at the four corners of the top of the transfer vehicle, and the top of the four groups of telescopic rods are fixedly connected to the four corners of the bottom of the pallet.
[0011] Furthermore, the arm span adjustment mechanism includes a slide rail, a slider and a second drive motor; the second drive motor is fixedly arranged on the top of the top plate, and its motor shaft is fixedly connected to the clamping mechanism; the slide rail is symmetrically arranged on both sides of the second drive motor, and a slider is slidably arranged on it; the slider is fixedly connected to the clamping mechanism.
[0012] Furthermore, the transfer vehicle is located at the top of the guide rail, and includes a base, an axle rotatably connected to the bottom of the base through a frame, and wheels fixedly connected to both ends of the axle.
[0013] Furthermore, the driving mechanism drives the transfer vehicle to move linearly along the guide rail, and it includes a mounting plate, a first driving motor, a driving wheel, a driven wheel and a chain; the mounting plate is fixedly arranged at the bottom of the base, and a first driving motor is fixedly arranged on one side of the mounting plate, and a driving wheel is fixedly arranged on the motor shaft of the first driving motor; the driven wheel is sleeved and fixed on the axle; the chain connects the driving wheel and the driven wheel.
[0014] Furthermore, baffles are provided at both ends of the guide rail; and buffer springs are provided at the inner ends of the baffles for buffering.
[0015] Furthermore, a displacement sensor is also provided at the inner end of the baffle.
[0016] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:
[0017] 1. The automatic loading and unloading device of the utility model drives the transfer vehicle to move linearly in the X direction through the driving mechanism, drives the clamping mechanism to move linearly in the Y direction through the lifting mechanism, and drives the clamping mechanism to move linearly in the Z direction through the arm span adjusting machine, thereby forming a three-axis motion mechanism, so that the clamping mechanism can be accurately moved to the loading point to clamp the crankshaft, thereby realizing the automatic loading and unloading of the crankshaft forging operation.
[0018] 2. The automatic loading and unloading device of the utility model adjusts the pitch angle of the clamping mechanism through the elevation adjustment mechanism to further increase it, so that the clamping mechanism can cross the corresponding obstacles to clamp the crankshaft, effectively improving the applicability of the loading and unloading device.
[0019] 3. The automatic loading and unloading device of the utility model adopts a guide rail and a transfer vehicle to load and unload the crankshaft, so that the device has little restriction on the site requirements. It does not require manual participation to fix the crankshaft, avoids close contact between the operator and the forged high-temperature crankshaft, and can automatically load and unload the crankshaft to ensure the personal safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic structural diagram of an automatic loading and unloading device for a crankshaft in an embodiment of the utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the driving mechanism in the embodiment of the utility model;
[0022] Figure 3 This is a front view of the automatic loading and unloading device in the embodiment of the utility model;
[0023] Figure 4 This is a structural schematic diagram of the arm span adjustment mechanism in an embodiment of the utility model;
[0024] Figure 5 It is a top view of the arm span adjustment mechanism in the embodiment of the utility model;
[0025] Figure 6 It is a structural schematic diagram of the clamping mechanism in an embodiment of the utility model.
[0026] In all the drawings, the same reference numerals represent the same technical features, specifically:
[0027] 1-Guide rail;
[0028] 2-transport vehicle, including: 21-base, 22-axle, 23-wheel;
[0029] 3-driving mechanism, including: 31-mounting plate, 32-first driving motor, 33-driving wheel, 34-driven wheel, 35-chain;
[0030] 4-lifting mechanism, including: 41-first cylinder, 411-first piston rod, 42-telescopic rod;
[0031] 5-Tray, including: 501-Through hole
[0032] 6- Top plate;
[0033] 7- elevation angle adjustment mechanism, including: 71- second cylinder, 72- first articulated seat, 73- second articulated seat, 74- third articulated seat;
[0034] 8-arm span adjustment mechanism, including: 81-slide rail, 82-sliding block, 83-second drive motor;
[0035] 9-clamping mechanism, including: 91-fixed arm, 911-first pin hole, 92-movable arm, 921-second pin hole, 93-third cylinder, 94-connecting rod, 95-movable claw, 96-fixed claw. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.
[0037] like Figure 1-6As shown, the utility model provides an automatic loading and unloading device for crankshafts, including a guide rail 1, a transfer vehicle 2, a driving mechanism 3, a lifting mechanism 4, a tray 5, a top plate 6, an elevation adjustment mechanism 7, an arm span adjustment mechanism 8 and a clamping mechanism 9. The transfer vehicle 2 is powered by the driving mechanism 3 to move linearly along the guide rail 1. The lifting mechanism 4, the tray 5, the top plate 6, the arm span adjustment mechanism 8 and the clamping mechanism 9 are arranged in sequence from bottom to top, wherein the lifting mechanism 4 lifts the tray 5 in the vertical direction; one end of the top plate 6 is hinged to the tray 5, and the elevation angle between the two is adjusted by the elevation adjustment mechanism 7; the arm span adjustment mechanism 9 includes a slide rail 81 and a slider 82, and the slider 82 is fixedly connected to the clamping mechanism 9, thereby driving the clamping mechanism 9 to move and adjust its arm span range; the clamping mechanism 9 includes a movable claw 95 and a fixed claw 96, and the movable claw 95 is opened and closed to clamp crankshafts of different diameters. During the operation, the transfer vehicle 2 is moved to the loading point by the driving mechanism 3, the jacking mechanism 4 lifts the tray 5, the elevation angle of the clamping mechanism 9 is adjusted according to the crankshaft position, the arm span adjustment mechanism 8 is controlled to adjust the arm span extension length of the clamping mechanism 9 to clamp the crankshaft, and then the crankshaft is moved to the unloading point for placement, completing the loading and unloading operation. The automatic loading and unloading device of the utility model has small site requirements, can be automatically loaded and unloaded, has high precision, and ensures the personal safety of the operators.
[0038] like Figure 1 As shown, the guide rail 1 is fixed on the ground according to the needs of crankshaft operation, and baffles are provided at both ends to prevent the transfer vehicle 2 from escaping from the guide rail 1; preferably, a buffer spring is provided at the inner end of the baffle for buffering; further, a displacement sensor is also provided at the inner end of the baffle to detect the displacement distance of the transfer vehicle 2 and improve the displacement accuracy.
[0039] The transfer vehicle 2 is located at the top of the guide rail 1, and includes a base 21, an axle 22 rotatably connected to the bottom of the base 21 through a frame, and wheels 23 fixedly connected to both ends of the axle 22. The base is made of a large mass counterweight block, which can prevent the vehicle body from overturning when clamping the crankshaft; the wheels 23 are in contact with the guide rail 1, so that the transfer vehicle 2 can maintain a linear displacement along the guide rail 1.
[0040] like Figure 2As shown, the driving mechanism 3 drives the transfer vehicle 2 to move linearly along the guide rail 1, and includes a mounting plate 31, a first driving motor 32, a driving wheel 33, a driven wheel 34 and a chain 35. The mounting plate 31 is fixedly arranged at the bottom of the base 21, and a first driving motor 32 is fixedly arranged on one side thereof, and a driving wheel 33 is fixedly arranged on the motor shaft of the first driving motor 32; the driven wheel 34 is sleeved and fixed on the axle 22; and the chain 35 connects the driving wheel 33 and the driven wheel 34. Driven by the first driving motor 32, the driving wheel 33 transmits the driven wheel 34 through the chain 35, drives the axle 22 to rotate, and causes the transfer vehicle 2 to move linearly along the guide rail 1.
[0041] like Figure 2 As shown, the lifting mechanism 4 lifts and lowers the clamping mechanism 9 in the vertical direction, and includes a first cylinder 41 and a telescopic rod 42. The first cylinder 41 is fixedly arranged at the center of the top of the transfer vehicle 2, and the end of the first piston 411 thereof is fixedly connected to the bottom of the pallet 5; the telescopic rod 42 is provided with four groups, which are symmetrically arranged at the four corners of the top of the transfer vehicle 2, and the tops of the four groups of telescopic rods 42 are fixedly connected to the four corners of the bottom of the pallet 5. When performing the lifting operation, the first cylinder 41 retracts and retracts the first piston 411, and under the guidance of the four groups of telescopic rods 42, the pallet 5 is linearly displaced in the vertical direction.
[0042] The elevation adjustment mechanism 7 adjusts the pitch angle of the clamping mechanism 9 to further raise it, so that the clamping mechanism 9 can cross the corresponding obstacles to clamp the crankshaft, effectively improving the applicability of the loading and unloading device. The elevation adjustment mechanism 7 includes a second cylinder 71, a first hinge seat 72, a second hinge seat 73 and a third hinge seat 74. The bottom of the second cylinder 71 is hinged to the top front end of the transfer vehicle 2 through the first hinge seat 72, and its top passes through the pallet 5 and is hinged to the bottom front end of the top plate 6 through the second hinge seat 73; the third hinge seat 74 is fixed to the rear end of the top of the pallet 5, and the top plate 6 is hinged to the pallet 5 through the third hinge seat 74. When performing the elevation adjustment operation, the piston rod of the second cylinder 71 extends to drive the top plate 6 to rotate around the third hinge seat 74, thereby raising the elevation angle of the clamping mechanism 9.
[0043] like Figure 4-5 As shown, the arm span adjustment mechanism 8 drives the clamping mechanism 9 to move linearly, so that it extends out of the top plate 6, thereby increasing the clamping arm span range. The arm span adjustment mechanism 8 includes a slide rail 81, a slider 82 and a second drive motor 83. The second drive motor 83 is fixedly arranged on the top of the top plate 6, and its motor shaft is fixedly connected to the clamping mechanism 9; the slide rails 81 are symmetrically arranged on both sides of the second drive motor 83, and a slider 82 is slidably arranged thereon; the slider 82 is fixedly connected to the clamping mechanism 9. When performing the arm span adjustment operation, the second drive motor 83 drives the motor shaft to extend and retract, driving the clamping mechanism 9 to move linearly along the slide rail 81, so that the clamping mechanism 9 is accurately moved to the loading point for loading.
[0044] like Figure 6 As shown, the clamping mechanism 9 clamps the crankshaft, and includes a fixed arm 91, a movable arm 92, a third cylinder 93, a connecting rod 94, a movable claw 95 and a fixed claw 96. The bottom of the fixed arm 91 is fixedly connected to the slider 82, and the front end thereof is provided with a first pin hole 911 and a fixed hole in sequence; the rear end of the movable arm 92 is fixedly connected to the piston rod of the third cylinder 93, and the front end thereof is provided with a second pin hole 921; the third cylinder 93 is hinged to the top rear end of the fixed arm 9, and its piston rod drives the movable arm 92 to move forward or backward; the two ends of the connecting rod 94 are respectively fixedly connected to the sides of the two groups of fixed arms 91, and the rear side thereof is fixedly connected to the motor shaft of the second drive motor 83; the upper end of the movable claw 95 is hinged to the front end of the movable arm 92 through the second pin hole 921, and the middle part is hinged to the front end of the fixed arm 9 through the first pin hole 911; the fixed claw 96 is fixedly connected to the fixed arm 9 through the fixed hole. When performing the clamping operation, the third cylinder 93 drives the movable arm 92 forward, thereby driving the movable claw 95 to rise and open. After aligning with the crankshaft, the third cylinder 93 drives the movable arm 92 backward, so that the movable claw 95 cooperates with the fixed claw 96 to clamp the crankshaft, completing the material picking action.
[0045] The automatic loading and unloading device of the utility model obtains the coordinates of the loading point and the unloading point during loading and unloading operations, detects the displacement distance of the transfer vehicle 2 according to the displacement sensor provided at the end of the guide rail 1, and the driving mechanism 3 drives the transfer vehicle 2 to move linearly along the guide rail 1 to the loading point for parking; the first cylinder 41 of the lifting mechanism 4 retracts the first piston 411, and under the guidance of the four groups of telescopic rods 42, the tray 5 is linearly displaced in the vertical direction (at this time, the second cylinder 71 follows the extended piston rod), so that the clamping mechanism 9 is flush with the crankshaft; the elevation angle adjustment mechanism 7 adjusts the pitch angle of the clamping mechanism 9 to further increase it; the second driving motor 83 of the arm span adjustment mechanism 8 drives the clamping mechanism 9 to move along the slide The rail 81 moves linearly, so that the clamping mechanism 9 moves accurately to above the loading point; the third cylinder 93 drives the movable arm 92 to move forward, thereby driving the movable claw 95 to rise and open, and after aligning with the crankshaft, the elevation adjustment mechanism 7 adjusts the pitch angle of the clamping mechanism 9, so that the movable claw 95 and the fixed claw 96 are located on both sides of the crankshaft; after aligning the crankshaft, the third cylinder 93 drives the movable arm 92 to retreat, so that the movable claw 95 cooperates with the fixed claw 96 to clamp the crankshaft to complete the material picking action; the lifting mechanism 4 rises to separate the crankshaft from the loading point; the arm span adjustment mechanism 8 and the lifting mechanism 4 are reset to lower the overall center; the driving mechanism 3 drives the transfer vehicle 2 to move linearly along the guide rail 1 to the unloading point to place the crankshaft to complete the unloading operation.
[0046] The automatic loading and unloading device of the utility model drives the transfer vehicle 2 to move linearly along the X direction through the driving mechanism 3, drives the clamping mechanism 9 to move linearly along the Y direction through the lifting mechanism 4, and drives the clamping mechanism 9 to move linearly along the Z direction through the arm span adjustment mechanism 8, thereby forming a three-axis motion mechanism, so that the clamping mechanism 9 is accurately moved to the loading point to clamp the crankshaft, thereby realizing the automatic loading and unloading of the crankshaft forging operation.
[0047] The automatic loading and unloading device of the utility model adjusts the pitch angle of the clamping mechanism 9 through the elevation adjustment mechanism 7 to further raise it, so that the clamping mechanism 9 can cross the corresponding obstacles to clamp the crankshaft, effectively improving the applicability of the loading and unloading device.
[0048] The automatic loading and unloading device of the utility model adopts the cooperation of the guide rail 1 and the transfer vehicle 2 to load and transport the crankshaft, so that the device has little restriction on the site requirements, and it does not need manual participation to fix the crankshaft, thus avoiding close contact between the operators and the forged high-temperature crankshaft. The crankshaft can be loaded and unloaded automatically to ensure the personal safety of the operators.
[0049] It will be easily understood by those skilled in the art that 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 and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An automatic loading and unloading device for a crankshaft, characterized in that: include: A guide rail (1) disposed on the ground; A transfer vehicle (2) disposed on the guide rail (1) is driven by a driving mechanism (3) to move linearly along the X direction; and a lifting mechanism (4), a tray (5), a top plate (6), an arm span adjustment mechanism (8) and a clamping mechanism (9) which are sequentially arranged above the transfer vehicle (2) from bottom to top; wherein the lifting mechanism (4) drives the lifting mechanism (4) to linearly displace along the Y direction; one end of the top plate (6) is hinged to the tray (5), and the elevation angle between the two is adjusted by an elevation angle adjustment mechanism (7); the arm span adjustment mechanism (8) comprises a slide rail (81) and a slider (82), and the slider (82) is fixedly connected to the clamping mechanism (9), thereby driving the clamping mechanism (9) to linearly displace along the Z direction to adjust its arm span range; the clamping mechanism (9) comprises a movable claw (95) and a fixed claw (96), and the movable claw (95) is opened and closed to clamp crankshafts of different diameters.
2. The automatic loading and unloading device for crankshafts according to claim 1, characterized in that: The clamping mechanism (9) clamps the crankshaft and comprises a fixed arm (91), a movable arm (92), a third cylinder (93), a connecting rod (94), a movable claw (95) and a fixed claw (96).
3. The automatic loading and unloading device for crankshafts according to claim 2, characterized in that: The bottom of the fixed arm (91) is fixedly connected to the slider (82), and the front end of the fixed arm (91) is provided with a first pin hole (911) and a fixing hole in sequence; the rear end of the movable arm (92) is fixedly connected to the piston rod of the third cylinder (93), and the front end of the movable arm (92) is provided with a second pin hole (921); the third cylinder (93) is hinged to the top rear end of the fixed arm (91), and the piston rod drives the movable arm (92) to move forward or backward; the two ends of the connecting rod (94) are respectively fixedly connected to the sides of the two groups of fixed arms (91), and the rear side is fixedly connected to the arm span adjustment mechanism (8); the upper end of the movable claw (95) is hinged to the front end of the movable arm (92) through the second pin hole (921), and the middle part is hinged to the front end of the fixed arm (91) through the first pin hole (911); the fixed claw (96) is fixedly connected to the fixed arm (91) through the fixing hole.
4. An automatic loading and unloading device for crankshafts according to any one of claims 1 to 3, characterized in that: The elevation angle adjustment mechanism (7) comprises a second cylinder (71), a first hinge seat (72), a second hinge seat (73) and a third hinge seat (74); the bottom of the second cylinder (71) is hinged to the top front end of the transfer vehicle (2) through the first hinge seat (72), and the top thereof passes through the pallet (5) and is hinged to the bottom front end of the top plate (6) through the second hinge seat (73); the third hinge seat (74) is fixedly arranged at the top rear end of the pallet (5), and the top plate (6) is hinged to the pallet (5) through the third hinge seat (74).
5. An automatic loading and unloading device for crankshafts according to any one of claims 1 to 3, characterized in that: The lifting mechanism (4) lifts and lowers the clamping mechanism (9) in the vertical direction, and comprises a first cylinder (41) and a telescopic rod (42); the first cylinder (41) is fixedly arranged at the center of the top of the transfer vehicle (2), and the end of the first piston (411) thereof is fixedly connected to the bottom of the pallet (5); the telescopic rod (42) is provided with four groups, which are symmetrically arranged at the four corners of the top of the transfer vehicle (2), and the tops of the four groups of telescopic rods (42) are fixedly connected to the four corners of the bottom of the pallet (5).
6. An automatic loading and unloading device for crankshafts according to any one of claims 1 to 3, characterized in that: The arm span adjustment mechanism (8) comprises a slide rail (81), a slider (82) and a second drive motor (83); the second drive motor (83) is fixedly arranged on the top of the top plate (6), and its motor shaft is fixedly connected to the clamping mechanism (9); the slide rail (81) is symmetrically arranged on both sides of the second drive motor (83), and a slider (82) is slidably arranged on the slide rail; the slider (82) is fixedly connected to the clamping mechanism (9).
7. An automatic loading and unloading device for crankshafts according to any one of claims 1 to 3, characterized in that: The transfer vehicle (2) is located on the top of the guide rail (1), and comprises a base (21), an axle (22) rotatably connected to the bottom of the base (21) through a frame, and wheels (23) fixedly connected to both ends of the axle (22).
8. An automatic loading and unloading device for crankshafts according to claim 7, characterized in that: The driving mechanism (3) drives the transfer vehicle (2) to move linearly along the guide rail (1), and comprises a mounting plate (31), a first driving motor (32), a driving wheel (33), a driven wheel (34) and a chain (35); the mounting plate (31) is fixedly arranged at the bottom of the base (21), a first driving motor (32) is fixedly arranged on one side of the mounting plate, and a driving wheel (33) is fixedly arranged on the motor shaft of the first driving motor (32); the driven wheel (34) is sleeved and fixed on the axle (22); and the chain (35) connects the driving wheel (33) and the driven wheel (34).
9. An automatic loading and unloading device for crankshafts according to any one of claims 1 to 3, characterized in that: Baffles are provided at both ends of the guide rail (1); and buffer springs are provided at the inner ends of the baffles for buffering.
10. The automatic loading and unloading device for crankshafts according to claim 9, characterized in that: A displacement sensor is also provided at the inner end of the baffle.