Device for detecting opening and closing fatigue strength of tail plate connecting piece of mine car compartment

Abstract

The invention discloses a mine car compartment tail plate connecting piece opening and closing fatigue strength detection device, and belongs to the technical field of compartment production, the mine car compartment tail plate connecting piece opening and closing fatigue strength detection device comprises a workbench, a compartment body and a tail door, a connecting piece body is jointly installed between the compartment body and the tail door, and a detection assembly is arranged on the top wall of the workbench; the detection assembly comprises a supporting plate fixedly installed on the top wall of the workbench, the top wall of the supporting plate is provided with an inclined face, a limiting plate is fixedly installed on the supporting plate, and a fixing assembly used for fixing the carriage body is arranged on the top wall of the workbench. According to the scheme, the carriage body can be in an inclined state through the supporting plate in the inclined state, so that the actual working state of the connecting piece body can be simulated, then the motor drives the connecting piece body to be opened and closed back and forth through the reciprocating lead screw, the push block and the push rod, and after the needed opening and closing times are reached, a user can take down the connecting piece body; and the fatigue strength is detected, so that the effect of improving the detection accuracy is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of carriage production, and more specifically to a device for detecting the opening and closing fatigue strength of a tailgate connecting piece of a mine car. Background Art

[0002] A mine car is an important piece of equipment for transporting ore. The tailgate connector of the car is a key structural component. Frequent opening and closing will cause fatigue of the connector, and long-term use may cause it to break, endangering personnel safety and production efficiency.

[0003] In order to ensure the stable operation of the carriage, the carriage will be tested after it is produced to understand the opening and closing fatigue of the carriage panel. The existing detection devices are generally relatively simple. Most of them are fixed by the user, and the tail plate is driven to open and close manually or by a driving component. Then the user can detect the fatigue strength of the connector with different opening and closing times. However, the existing detection device is relatively cumbersome and the carriage cannot be fixed during the detection process, which affects the accuracy of the detection.

[0004] In view of the above problems, some solutions have been provided in the prior art. For example, a Chinese invention application with publication number CN118130062A discloses a vehicle side panel opening and closing fatigue strength detection device. Before detecting the connecting parts, the device can fix the vehicle through a positioning assembly to avoid movement of the vehicle during the detection process, thereby improving the detection effect. During the actual opening process of the tailgate of the vehicle, the vehicle is often in a tilted state, while the prior art can only simulate the opening and closing of the connecting parts when the vehicle is in a horizontal state, and the force on the connecting parts of the vehicle in the tilted state may be different from that in the horizontal state, which will have a certain impact on the accuracy of the detection. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car, which can achieve the purpose of improving the detection accuracy.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car compartment comprises a workbench, a compartment body, and a tailgate, wherein a connector body is installed between the compartment body and the tailgate, and a detection component is arranged on the top wall of the workbench; The detection component includes a support plate fixedly mounted on the top wall of the workbench, and the top wall inclined surface of the support plate, a limit plate fixedly mounted on the support plate, and a fixing component for fixing the carriage body is provided on the top wall of the workbench, a vertical plate fixedly mounted on the top wall of the workbench, a motor fixedly mounted on the vertical plate, a reciprocating screw fixedly mounted on the output end of the motor, a push block threadedly mounted on the reciprocating screw, a telescopic tube fixedly mounted between the side wall of the push block and the vertical plate, a push rod for pushing the tailgate to open and close is fixedly mounted on the side wall of the push block away from the telescopic tube, and a linkage component is provided on the push rod.

[0008] Furthermore, the fixing component includes a mounting frame symmetrically fixedly installed on the top wall of the workbench, a sleeve is fixedly installed on the side wall of the mounting frame, a piston plate is slidably installed in the sleeve, a first spring is jointly installed between the piston plate and the sleeve, a fixing rod is fixedly installed on the side wall of the piston plate away from the first spring, and a driving component cooperating with the piston plate is provided on the mounting frame.

[0009] Furthermore, the driving assembly includes a mounting cavity opened on the mounting frame, a coil electrically connected to the motor is arranged in the mounting cavity, and a magnet block cooperating with the coil is embedded on the piston plate.

[0010] Furthermore, the linkage assembly includes a ball that is evenly rotated and installed on the side wall of the push rod, a lubrication groove is opened on the vertical plate, the lubrication groove is filled with lubricating oil, a pressure valve is inserted on the lubrication groove, a lubrication pipe is connected to the output end of the pressure valve, and the end of the lubrication pipe away from the lubrication groove is in contact with the ball, and an air supply assembly that cooperates with the lubrication groove is provided on the vertical plate.

[0011] Furthermore, the air supply assembly is inserted into an exhaust valve on the sleeve, a first air pipe connected to the lubrication groove is inserted into the output end of the exhaust valve, and an air intake valve whose input end is connected to the outside is inserted into the sleeve.

[0012] Furthermore, a linkage rod is fixedly installed on the fixed rod, a linkage plate is fixedly installed on the linkage rod, an air cavity is opened on the linkage plate, an air hole is opened on the air cavity, a second air pipe is inserted in the air cavity, a first one-way valve whose input end is connected to the telescopic tube is inserted on the vertical plate, and the output end of the first one-way valve is connected to the second air pipe, a second one-way valve whose input end is connected to the outside is inserted on the vertical plate, and the input end of the second one-way valve is connected to the telescopic tube.

[0013] Furthermore, a water-absorbing sponge in contact with the lubrication tube is embedded on the push rod.

[0014] Furthermore, a limiting rod rotatably matched with the reciprocating screw is fixedly mounted on the top wall of the workbench.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) This solution uses a tilted support plate to tilt the carriage body, thereby simulating the actual working state of the connector body. The motor then drives the connector body to open and close back and forth through the reciprocating screw, push block, and push rod. After the required number of opening and closing times is reached, the user can remove the connector body and test its fatigue strength, which improves the accuracy of the test. (2) This solution uses the combination of the coil and the magnet block. After the motor is started, the coil is energized and generates a magnetic field. Then, under the action of the magnetic field, the magnet block drives the piston plate to move along the sleeve and stretch the first spring. Then, during the movement of the piston plate, the fixing rod is driven to move and clamp the vehicle body, thereby avoiding the movement of the vehicle body during the process of the tailgate driving the connecting part body to open and close, which affects the detection accuracy of the connecting part body and further improves the detection accuracy. (3) In this scheme, an air cavity is provided, and the push block drives the telescopic tube to extend and retract back and forth during the reciprocating motion. Then, during the extension of the telescopic tube, the telescopic tube inhales gas from the outside through the second one-way valve. Then, during the contraction, the gas in the telescopic tube flows to the second air pipe through the first one-way valve, and flows into the air cavity through the second air pipe. Then, the gas is blown to the connector body through the air holes on the air cavity. Since the connector body is not opened and closed back and forth in a short period of time during actual use, and the connector body will generate heat during the opening and closing process in a short period of time, and the fatigue degree of the connector body will be accelerated, by blowing air to the connector body, the air flow rate near the connector body can be accelerated, thereby improving the heat dissipation effect of the connector body, thereby further improving the accuracy of detection; (4) In this scheme, by setting a ball, when the push rod drives the connecting body to open and close, sliding friction will occur between the tailgate and the side wall of the push rod. Then, by setting a ball, the push rod can be replaced to drive the connecting body to open and close. Then, when the ball drives the connecting body to open and close, the tailgate will drive the ball to roll, so that the sliding friction between the push rod and the tailgate can be converted into rolling friction between the ball and the tailgate, thereby reducing the wear of the push rod and reducing the resistance when the push rod drives the tailgate to open and close, thereby reducing the replacement frequency of the push rod, thereby improving the detection efficiency; (5) This scheme opens a lubrication groove. When the first spring drives the piston plate to reset, negative pressure is generated in the sleeve. Then, under the action of pressure, the sleeve inhales gas from the outside through the intake valve. Then, in the process of the piston plate moving and stretching the first spring, the piston plate squeezes the gas in the sleeve and causes the gas to flow into the lubrication groove through the exhaust valve and the first air pipe. Then, under the action of the gas, the pressure in the lubrication groove increases, and the lubricating oil in the lubrication groove flows to the ball through the lubrication pipe, thereby reducing the resistance of the ball when it rolls, and reducing the degree of wear of the ball, thereby further improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 It is a cross-sectional view of the sleeve, piston plate and fixing rod of the present invention; Figure 4 It is a cross-sectional view of the vertical plate and telescopic tube of the present invention; Figure 5 It is a combined diagram of the push rod, the ball and the water-absorbing sponge of the present invention; Figure 6 is a side view of the present invention; Figure 7 is a cross-sectional view of the linkage plate of the present invention; Figure 8 It is a top view of the present invention.

[0017] Description of the numbers in the figure: 1. Workbench; 2. Carriage body; 3. Tailgate; 4. Connector body; 5. Detection assembly; 501. Support plate; 502. Limit plate; 503. Vertical plate; 504. Motor; 506. Reciprocating screw rod; 507. Push block; 508. Telescopic tube; 509. Push rod; 6. Fixing assembly; 601. Mounting frame; 602. Sleeve; 603. Piston plate; 604. First spring; 605. Fixing rod; 606. Driving assembly; 6061. Coil; 6062. Magnet block; 7. Linkage assembly; 701. Ball bearing; 702. Lubrication groove; 703. Pressure valve; 704. Lubrication pipe; 705. Air supply assembly; 7051. Exhaust valve; 7052. First air pipe; 7053. Inlet valve; 801, linkage rod; 802, linkage plate; 803, air cavity; 804, air hole; 805, second air pipe; 806, first one-way valve; 807, second one-way valve; 9. Water-absorbing sponge; 10. Limit rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 8 A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car compartment comprises a workbench 1, a compartment body 2, and a tailgate 3. A connector body 4 is installed between the compartment body 2 and the tailgate 3. A detection component 5 is provided on the top wall of the workbench 1. The detection component 5 includes a support plate 501 fixedly mounted on the top wall of the workbench 1, and the top wall inclined surface of the support plate 501, a limit plate 502 fixedly mounted on the support plate 501, and a fixing component 6 for fixing the carriage body 2 is provided on the top wall of the workbench 1, a vertical plate 503 fixedly mounted on the top wall of the workbench 1, a motor 504 fixedly mounted on the vertical plate 503, a reciprocating screw rod 506 fixedly mounted on the output end of the motor 504, a push block 507 threadedly mounted on the reciprocating screw rod 506, a telescopic tube 508 fixedly mounted between the side wall of the push block 507 and the vertical plate 503, a push rod 509 for pushing the tailgate 3 to open and close is fixedly mounted on the side wall of the push block 507 away from the telescopic tube 508, and a linkage component 7 is provided on the push rod 509.

[0020] During use, the monitoring personnel can first hoist the car body 2 onto the top wall of the support plate 501, and then the car body 2 will slide along the top wall of the support plate 501 under the action of gravity and contact with the limit plate 502, that is, the car body 2 is in a tilted state at this time, and then the motor 504 can be started to drive the reciprocating screw rod 506 to rotate. Since the push block 507 is threadedly matched with the reciprocating screw rod 506 and the push block 507 cannot rotate under the action of the telescopic tube 508, the push block 507 can be driven to reciprocate along the reciprocating screw rod 506 during the rotation of the reciprocating screw rod 506, and then the push block 507 is driven to move back and forth along the reciprocating screw rod 506 during the movement of the push block 507 toward the car body 2, and the push rod 509 is gradually contacted with the tailgate 3 and exerts a thrust on the tailgate 3, and then the tailgate 3 is gradually separated from the car body 2 under the action of the thrust. The compartment body 2 is closed, and then with the rotation of the reciprocating screw rod 506, the push block 507 drives the push rod 509 to gradually disengage from the tailgate 3. Since the compartment body 2 is in a tilted state, the tailgate 3 is in a tilted state at this time, and then under the action of gravity, the tailgate 3 gradually opens and closes with the compartment body 2 and is in a vertical state, and then in the process of the push block 507 driving the push rod 509 to reciprocate, the tailgate 3 can be driven to open and close repeatedly, and in the process of the repeated opening and closing of the tailgate 3, the connector body 4 can be driven to open and close repeatedly. Since the compartment body 2 is in a tilted state at this time, the repeated opening and closing of the connector body 4 during use can be accurately simulated. After reaching the required number of opening and closing times, the user can remove the connector body 4 and test its fatigue strength, which plays a role in improving the detection accuracy.

[0021] like Figure 1 , Figure 3 As shown, the fixing assembly 6 includes a mounting frame 601 symmetrically fixedly mounted on the top wall of the workbench 1, a sleeve 602 is fixedly mounted on the side wall of the mounting frame 601, a piston plate 603 is slidably mounted in the sleeve 602, a first spring 604 is commonly mounted between the piston plate 603 and the sleeve 602, a fixing rod 605 is fixedly mounted on the side wall of the piston plate 603 away from the first spring 604, and a driving assembly 606 cooperating with the piston plate 603 is provided on the mounting frame 601.

[0022] The driving assembly 606 includes a mounting cavity provided on the mounting frame 601 . A coil 6061 electrically connected to the motor 504 is provided in the mounting cavity. A magnet block 6062 cooperating with the coil 6061 is embedded on the piston plate 603 .

[0023] By adopting the above technical solution, after the motor 504 is started, the coil 6061 is energized and generates a magnetic field, and then under the action of the magnetic field, the magnet block 6062 drives the piston plate 603 to move along the sleeve 602 and stretch the first spring 604, and then in the process of the movement of the piston plate 603, it drives the fixing rod 605 to move and clamp the car body 2, thereby avoiding the movement of the car body 2 during the process of the tailgate 3 driving the connecting body 4 to open and close, and affecting the detection accuracy of the connecting body 4, thereby further improving the detection accuracy.

[0024] When the detection is completed, as the motor 504 is turned off, the coil 6061 is powered off and the electromagnetic field disappears. At this time, the first spring 604 contracts and drives the piston plate 603 to reset. Then, during the process of the piston plate 603 resetting, the fixing rod 605 is driven to break contact with the car body 2 and release the fixation of the car body 2, thereby facilitating the user to remove the car body 2 from the detection device after the detection.

[0025] like Figure 3 , Figure 4 , Figure 5 As shown, the linkage assembly 7 includes a ball 701 which is evenly rotated and installed on the side wall of the push rod 509, a lubrication groove 702 is opened on the vertical plate 503, and the lubrication groove 702 is filled with lubricating oil. A pressure valve 703 is inserted on the lubrication groove 702, and a lubrication pipe 704 is connected to the output end of the pressure valve 703, and the end of the lubrication pipe 704 away from the lubrication groove 702 is in contact with the ball 701, and an air supply assembly 705 cooperating with the lubrication groove 702 is provided on the vertical plate 503.

[0026] The air supply component 705 is inserted into an exhaust valve 7051 on the sleeve 602, and a first air pipe 7052 connected to the lubrication groove 702 is inserted on the output end of the exhaust valve 7051. The sleeve 602 is inserted with an intake valve 7053 whose input end is connected to the outside.

[0027] By adopting the above technical solution, in the process of the push rod 509 driving the connecting body 4 to open and close, sliding friction will occur between the tailgate 3 and the side wall of the push rod 509, and then the ball 701 can be set to replace the push rod 509 to drive the connecting body 4 to open and close. Then, in the process of the ball 701 driving the connecting body 4 to open and close, the tailgate 3 will drive the ball 701 to roll, so that the sliding friction between the push rod 509 and the tailgate 3 can be converted into the rolling friction between the ball 701 and the tailgate 3, thereby reducing the wear degree of the push rod 509 and reducing the resistance when the push rod 509 drives the tailgate 3 to open and close, thereby reducing the replacement frequency of the push rod 509 and thereby improving the detection efficiency.

[0028] When the first spring 604 drives the piston plate 603 to reset, negative pressure is generated in the sleeve 602. Then, under the action of pressure, the sleeve 602 inhales gas from the outside through the intake valve 7053. Then, in the process of the piston plate 603 moving and stretching the first spring 604, the piston plate 603 squeezes the gas in the sleeve 602, and makes the gas flow to the lubrication groove 702 through the exhaust valve 7051 and the first air pipe 7052. Then, under the action of the gas, the pressure in the lubrication groove 702 increases, and the lubricating oil in the lubrication groove 702 flows to the ball 701 through the lubrication pipe 704, thereby reducing the rolling resistance of the ball 701 and further reducing the wear of the ball 701, thereby further improving the detection efficiency.

[0029] like Figure 4 , Figure 7 As shown, a linkage rod 801 is fixedly installed on the fixed rod 605, a linkage plate 802 is fixedly installed on the linkage rod 801, an air cavity 803 is opened on the linkage plate 802, an air hole 804 is opened on the air cavity 803, a second air pipe 805 is inserted in the air cavity 803, a first one-way valve 806 whose input end is connected to the telescopic tube 508 is inserted on the vertical plate 503, and the output end of the first one-way valve 806 is connected to the second air pipe 805, a second one-way valve 807 whose input end is connected to the outside is inserted on the vertical plate 503, and the input end of the second one-way valve 807 is connected to the telescopic tube 508.

[0030] By adopting the above technical solution, the reciprocating motion of the push block 507 will drive the telescopic tube 508 to extend and retract back and forth, and then the telescopic tube 508 will inhale gas from the outside through the second one-way valve 807 during the extension process, and then the gas in the telescopic tube 508 will flow to the second air pipe 805 through the first one-way valve 806, and flow to the air cavity 803 through the second air pipe 805, and then the gas will be blown to the connector body 4 through the air hole 804 on the air cavity 803. Since the connector body 4 is not opened and closed back and forth in a short period of time during actual use, and the connector body 4 will generate heat during the opening and closing process in a short period of time, and the fatigue degree of the connector body 4 will be accelerated, by blowing air to the connector body 4, the air flow rate near the connector body 4 can be accelerated, thereby improving the heat dissipation effect of the connector body 4, that is, the influence of temperature on the fatigue detection of the connector body 4 can be reduced, thereby further improving the accuracy of the detection.

[0031] like Figure 5 As shown, a water-absorbing sponge 9 in contact with the lubrication tube 704 is embedded on the push rod 509 .

[0032] By adopting the above technical solution, after the lubricating oil passes through the lubricating tube 704, the lubricating oil will flow to the water-absorbing sponge 9, and then the water-absorbing sponge 9 can absorb the lubricating oil. Since the ball 701 is in contact with the water-absorbing sponge 9, the water-absorbing sponge 9 can continuously and evenly distribute the lubricating oil on the surface of the ball 701 during the rotation of the ball 701. At the same time, the water-absorbing sponge 9 can also absorb and store excess lubricating oil, thereby improving the lubrication effect while reducing the loss of lubricating oil, thereby improving the lubrication effect.

[0033] like Figure 1 As shown, a limit rod 10 rotatably matched with the reciprocating screw 506 is fixedly mounted on the top wall of the workbench 1 .

[0034] By adopting the above-mentioned technical scheme, in the process that the reciprocating screw 506 rotates and drives the push block 507 to move, the end of the reciprocating screw 506 away from the vertical plate 503 can be supported by setting the limit rod 10, thereby increasing the support points of the reciprocating screw 506 and dispersing the reaction force received by the reciprocating screw 506, thereby extending the service life of the reciprocating screw 506, and the setting of the limit rod 10 can also limit the push block 507, thereby preventing the push block 507 from falling off the reciprocating screw 506.

[0035] Instructions for use: During use, the monitoring personnel can first hoist the carriage body 2 onto the top wall of the support plate 501, and then the carriage body 2 will slide along the top wall of the support plate 501 under the action of gravity and contact with the limit plate 502, that is, the carriage body 2 is in an inclined state at this time, and then the motor 504 can be started to drive the reciprocating screw rod 506 to rotate. Since the push block 507 is threadedly matched with the reciprocating screw rod 506 and the push block 507 cannot rotate under the action of the telescopic tube 508, the push block 507 can be driven to reciprocate along the reciprocating screw rod 506 during the rotation of the reciprocating screw rod 506, and then the push block 507 moves toward the carriage body 2. During the process, the push rod 509 is driven to gradually contact with the tailgate 3 and exert a thrust on the tailgate 3. Then, under the action of the thrust, the tailgate 3 is gradually closed with the carriage body 2. Then, with the rotation of the reciprocating screw rod 506, the push block 507 drives the push rod 509 to gradually disengage from the tailgate 3. Since the carriage body 2 is in an inclined state, the tailgate 3 is in an inclined state at this time. Then, under the action of gravity, the tailgate 3 is gradually opened and closed with the carriage body 2 and is in a vertical state. Then, in the process of the push block 507 driving the push rod 509 to reciprocate, the tailgate 3 can be driven to open and close repeatedly, and in the process of the repeated opening and closing of the tailgate 3, the connecting member body 4 can be driven to open and close repeatedly. The body 2 is in an inclined state, which can accurately simulate the repeated opening and closing of the connector body 4 during use. After the required number of opening and closing times is reached, the user can remove the connector body 4 and test its fatigue strength; after the motor 504 is started, the coil 6061 is energized and generates a magnetic field, and then under the action of the magnetic field, the magnet block 6062 drives the piston plate 603 to move along the sleeve 602 and stretch the first spring 604, and then drives the fixing rod 605 to move and clamp the carriage body 2 during the movement of the piston plate 603, thereby avoiding the carriage body 2 from moving during the process of the tailgate 3 driving the connector body 4 to open and close, and affecting the detection of the connector body 4 Accuracy; when the push rod 509 drives the connecting body 4 to open and close, sliding friction will occur between the tailgate 3 and the side wall of the push rod 509, and then the ball 701 can be set to replace the push rod 509 to drive the connecting body 4 to open and close. Then, when the ball 701 drives the connecting body 4 to open and close, the tailgate 3 will drive the ball 701 to roll, so that the sliding friction between the push rod 509 and the tailgate 3 can be converted into rolling friction between the ball 701 and the tailgate 3, thereby reducing the wear degree of the push rod 509 and reducing the resistance when the push rod 509 drives the tailgate 3 to open and close, thereby reducing the replacement frequency of the push rod 509, thereby improving the detection efficiency;When the first spring 604 drives the piston plate 603 to reset, negative pressure is generated in the sleeve 602. Then, under the action of pressure, the sleeve 602 inhales gas from the outside through the intake valve 7053. Then, in the process of the piston plate 603 moving and stretching the first spring 604, the piston plate 603 squeezes the gas in the sleeve 602, and causes the gas to flow into the lubrication groove 702 through the exhaust valve 7051 and the first air pipe 7052. Then, under the action of the gas, the pressure in the lubrication groove 702 increases, and causes the lubricating oil in the lubrication groove 702 to flow to the ball 701 through the lubrication pipe 704, thereby reducing the rolling resistance of the ball 701 and further reducing the wear of the ball 701. In the process of the reciprocating motion of the push block 507, the telescopic The tube 508 is extended and retracted back and forth, and in the process of extension of the extension tube 508, the extension tube 508 inhales gas from the outside through the second one-way valve 807, and in the process of contraction, the gas in the extension tube 508 flows to the second air pipe 805 through the first one-way valve 806, and flows into the air cavity 803 through the second air pipe 805, and then the gas is blown to the connector body 4 through the air hole 804 on the air cavity 803. Since the connector body 4 is not opened and closed back and forth in a short time during actual use, and the connector body 4 will heat up during the process of opening and closing back and forth in a short time, and the fatigue degree of the connector body 4 will be accelerated, by blowing air to the connector body 4, the air flow rate near the connector body 4 can be accelerated, thereby improving the heat dissipation effect of the connector body 4. ;

[0036] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car, comprising a workbench (1), a car body (2), and a tailgate (3); a connector body (4) is installed between the car body (2) and the tailgate (3); and a detection component (5) is provided on the top wall of the workbench (1); Features: The detection component (5) comprises a support plate (501) fixedly mounted on the top wall of the workbench (1), and the top wall of the support plate (501) has an inclined surface, a limit plate (502) fixedly mounted on the support plate (501), and a fixing component (6) for fixing the carriage body (2) is provided on the top wall of the workbench (1), a vertical plate (503) fixedly mounted on the top wall of the workbench (1), and a motor (504) fixedly mounted on the vertical plate (503). A reciprocating screw (506) is fixedly mounted on the output end of the motor (504), a push block (507) is threadedly mounted on the reciprocating screw (506), a telescopic tube (508) is fixedly mounted between the side wall of the push block (507) and the vertical plate (503), a push rod (509) for pushing the tailgate (3) to open and close is fixedly mounted on the side wall of the push block (507) away from the telescopic tube (508), and a linkage assembly (7) is provided on the push rod (509).

2. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car according to claim 1, characterized in that: The fixing assembly (6) comprises a mounting frame (601) symmetrically fixedly mounted on the top wall of the workbench (1); a sleeve (602) is fixedly mounted on the side wall of the mounting frame (601); a piston plate (603) is slidably mounted in the sleeve (602); a first spring (604) is installed between the piston plate (603) and the sleeve (602); a fixing rod (605) is fixedly mounted on the side wall of the piston plate (603) away from the first spring (604); and a driving assembly (606) cooperating with the piston plate (603) is provided on the mounting frame (601).

3. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car according to claim 2, characterized in that: The driving assembly (606) comprises a mounting cavity opened on the mounting frame (601), a coil (6061) electrically connected to the motor (504) is arranged in the mounting cavity, and a magnet block (6062) cooperating with the coil (6061) is embedded on the piston plate (603).

4. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car according to claim 3, characterized in that: The linkage assembly (7) comprises a ball (701) mounted on the side wall of the push rod (509) for uniform rotation, a lubrication groove (702) is provided on the vertical plate (503), the lubrication groove (702) is filled with lubricating oil, a pressure valve (703) is inserted into the lubrication groove (702), a lubrication pipe (704) is connected to the output end of the pressure valve (703), and the end of the lubrication pipe (704) away from the lubrication groove (702) contacts the ball (701), and an air supply assembly (705) cooperating with the lubrication groove (702) is provided on the vertical plate (503).

5. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car according to claim 4, characterized in that: The air supply assembly (705) is inserted into an exhaust valve (7051) on the sleeve (602); a first air pipe (7052) connected to the lubrication groove (702) is inserted into the output end of the exhaust valve (7051); and an air intake valve (7053) whose input end is connected to the outside is inserted into the sleeve (602).

6. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car according to claim 5, characterized in that: A linkage rod (801) is fixedly mounted on the fixed rod (605), a linkage plate (802) is fixedly mounted on the linkage rod (801), an air cavity (803) is provided on the linkage plate (802), an air hole (804) is provided on the air cavity (803), a second air pipe (805) is inserted into the air cavity (803), a first one-way valve (806) whose input end is connected to the telescopic tube (508) is inserted into the vertical plate (503), and an output end of the first one-way valve (806) is connected to the second air pipe (805), and a second one-way valve (807) whose input end is connected to the outside is inserted into the vertical plate (503), and an input end of the second one-way valve (807) is connected to the telescopic tube (508).

7. A device for detecting the opening and closing fatigue strength of a tailgate connector of a mine car according to claim 4, characterized in that: The push rod (509) is embedded with a water-absorbing sponge (9) in contact with the lubrication tube (704).

8. The device for detecting the opening and closing fatigue strength of the tailgate connector of a mine car according to claim 1, characterized in that: A limit rod (10) is fixedly mounted on the top wall of the workbench (1) and is rotatably matched with the reciprocating screw rod (506).

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