Device to prevent cart derailment when running an automobile sampler

Abstract

The present invention discloses a cart derailment prevention device for automobile samplers, which relates to the technical field of derailment prevention for large mobile devices in thermal power plants. The device comprises an anti-derailment mechanism and a connecting mechanism. The anti-derailment mechanism includes a protection assembly mounted on the front end of the running wheels of the mobile device and a monitoring assembly connected to the protection assembly. The connecting mechanism includes a joint mounted on the top end of the protection assembly, a fixing assembly mounted on the bottom end of the mobile device and detachably connected to the joint, and a separation assembly mounted on the joint. The device described in the present invention solves potential safety issues when the cart travels on uneven rails by automatically adjusting the sensing distance between the proximity switch and the rail through the expansion and contraction of the spring in the anti-derailment mechanism. Furthermore, the installation of the connecting mechanism allows the anti-derailment mechanism to be quickly attached and detached, thereby facilitating periodic performance inspection, maintenance, and replacement of the spring in the anti-derailment mechanism and ensuring the flexibility of the spring.

Description

[Technical Field]

[0001] The present invention relates to the technical field of derailment prevention for large moving equipment in thermal power plants, and in particular to a derailment prevention device for carts of automobile samplers. [Background technology]

[0002] When a car sampler is sampling, the coal contains stones, frozen coal, or metal materials. If the sampler's auger hits these hard objects while descending, the sampling bit will push up the entire cart mechanism of the sampler, causing the cart wheels to deviate from the rails. As a result, in minor cases, the cart will be unable to move, and in serious cases, the overhead crane may fall, injuring personnel and damaging the coal transport vehicle, resulting in a serious accident. In addition, some car samplers have been in operation for a long time, and the cart rails are not flat and have become severely deformed. Even if an anti-derailment proximity switch is installed on the sampler, the uneven rails make it difficult to determine the proximity switch's sensing distance, and the proximity switch will easily be scraped and fall off while the cart is moving, making it impossible to protect the sampler's cart mechanism. Summary of the Invention

[0003] In view of the above-mentioned problems existing in the conventional cart derailment prevention device for an automobile sampler, the present invention has been proposed.

[0004] Therefore, the problem that the present invention aims to solve is how to avoid damage to the cart running derailment prevention device of the automobile sampler.

[0005] In order to solve the above technical problems, the present invention provides the following technical solution: A cart derailment prevention device for an automobile sampler, comprising: a derailment prevention mechanism including a protection assembly provided at the front end of the running wheels of a moving device and a monitoring assembly connected to the protection assembly, and a connection mechanism including a joint provided at the top end of the protection assembly, a fixing assembly provided at the bottom end of the moving device and detachably connected to the joint, and a separation assembly provided at the joint.

[0006] In one preferred embodiment of the cart derailment prevention device for an automobile sampler according to the present invention, the protection assembly includes a sleeve, an upper cover detachably connected to the upper end of the sleeve, a first spring, a holder provided at the lower end of the upper cover, a rail wheel, and a connecting sleeve, the first spring is fitted onto the outside of the holder, one end of the connecting sleeve is hingedly connected to the rail wheel, the outside of the end remote from the rail wheel is slidably fitted inside the sleeve, and the holder is slidably fitted onto the inner wall of the connecting sleeve.

[0007] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, a straight groove opening is further provided on the side of the sleeve, and the monitoring assembly includes a connection holder and a proximity switch, one end of the connection holder is connected to the upper end of the connection sleeve and is slip-fitted into the straight groove opening, and the end of the connection holder away from the connection sleeve is connected to the proximity switch.

[0008] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, the joint includes a straight cylinder provided at the upper end of the upper cover, and an engagement plate connected to the end of the straight cylinder away from the engagement plate.

[0009] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, the fixing assembly includes a base provided at the lower end of the moving device, a passage provided in the center of the base, fitting grooves distributed axially on the side of the passage, a fitting block that slides into the fitting groove, and a second spring provided between the bottom of the fitting groove and the fitting block, and a first inclined surface is provided at the lower end of the fitting block.

[0010] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, the separation assembly includes a rotating drum rotatably arranged within the straight cylinder, a separation tube, an operating tube, and a third spring, and the separation tube and the operating tube are both fitted onto the outside of the straight cylinder, the operating tube is arranged at the lower end of the separation tube, and the third spring is installed between the upper cover and the lower end of the operating tube.

[0011] In a preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, a vertical groove is provided on the side of the straight cylinder, a first spiral groove and a second spiral groove are provided on the side of the rotating drum, the first spiral groove is provided at the upper end of the second spiral groove, a first connecting rod is provided on the inner wall of the separation cylinder, and a second connecting rod is provided on the inner wall of the operating cylinder, and both the first connecting rod and the second connecting rod are slidably fitted into the vertical groove, the first connecting rod is slidably fitted into the first spiral groove, and the second connecting rod is slidably fitted into the second spiral groove.

[0012] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, a ring-shaped base is further provided at the upper end of the separation tube, and notches are distributed around the circumference of the ring-shaped base. The engagement plate is further provided with a ring-shaped groove at the lower end and angular grooves are distributed on the side wall, and the ring-shaped groove is aligned with the ring-shaped base. Long grooves and circular grooves are distributed around the circumference of the outer ring groove, and the long groove is provided in the middle of the circular groove, and the circular groove penetrates through the ring-shaped groove and the outside of the engagement plate.

[0013] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, the ring-shaped base further includes a circular base that slides into the notch, and a fourth spring that is provided between the bottom of the notch and the circular base, and a second inclined surface is provided at the upper end of the circular base.

[0014] In one preferred embodiment of the cart derailment prevention device for an automobile sampler described in the present invention, the engagement plate further includes a round bar arranged within the circular groove, and the round bar further includes a baffle arranged in the middle of the round bar and slidingly fitted into the long groove, and a fifth spring arranged between the baffle and the long groove, and a third inclined surface is further provided on the underside of the end of the round bar away from the ring-shaped groove.

[0015] The beneficial effects of the present invention are as follows: In the derailment prevention mechanism, the sensing distance between the proximity switch and the rail is automatically adjusted according to the expansion and contraction of the spring, which further ensures that the cart can travel safely and reliably on the rail and solves potential safety issues when the cart travels on uneven rails; and the provision of a connecting mechanism allows the derailment prevention mechanism to be quickly attached and detached, which facilitates periodic performance inspection, maintenance, and replacement of the spring in the derailment prevention mechanism and ensures the flexibility of the spring's expansion and contraction. [Brief explanation of the drawings]

[0016] In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings used in the description of the embodiments. Of course, the drawings described below are only a part of the embodiments of the present invention, and those skilled in the art can come up with other drawings based on these drawings without any creative efforts. [Figure 1] FIG. 10 is a scene diagram of a cart derailment prevention device for an automobile sampler. [Figure 2] FIG. 1 is a structural diagram of a cart derailment prevention device for an automobile sampler. [Figure 3]This is a structural diagram of the joint of the cart derailment prevention device for the automobile sampler. [Figure 4] FIG. 10 is a cross-sectional view of a joint portion of a cart derailment prevention device for an automobile sampler. [Figure 5] This is a structural diagram of the separation tube and operation tube of the cart derailment prevention device for the automobile sampler. [Figure 6] FIG. 10 is a cross-sectional view of a separation tube of a cart derailment prevention device for an automobile sampler. [Figure 7] FIG. 10 is a cross-sectional view of a fixing assembly of a cart derailment prevention device for an automobile sampler. [Figure 8] FIG. 1 is a schematic diagram illustrating the principle of the connection mechanism of the cart derailment prevention device for the automobile sampler. DETAILED DESCRIPTION OF THE INVENTION

[0017] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below with reference to the drawings in the specification.

[0018] Although the following description provides numerous specific details to provide a thorough understanding of the present invention, the present invention may be embodied in other forms different from those described herein, and those skilled in the art will be able to make similar modifications without violating the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

[0019] References herein to "one embodiment" or "embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they mutually exclusive of other embodiments, either singly or in the alternative.

[0020] Example 1 Referring to Figures 1 and 2, a first embodiment of the present invention provides a cart derailment prevention device for an automobile sampler, which includes a derailment prevention mechanism 100 and a connection mechanism 200.

[0021] Specifically, the derailment prevention mechanism 100 includes a protection assembly 101 provided at the front end of the running wheel of the moving device, and a monitoring assembly 102 connected to the protection assembly 101; The protection assembly 101 protects the monitoring assembly 102 from damage caused by rail rubbing, and the monitoring assembly 102 is responsible for monitoring the distance between the rail in real time and issuing a cart derailment alarm in a timely manner, thereby preventing a derailment event from occurring.

[0022] The connection mechanism 200 includes a joint 201 provided at the top end of the protection assembly 101, a fixing assembly 202 provided at the bottom end of the moving device and removably connected to the joint 201, and a separation assembly 203 provided at the joint 201; Once the joint 201 is inserted into the fixed assembly 202, the connection is completed, and the joint 201 and the fixed assembly 202 can be separated by a separation assembly 203, facilitating inspection, maintenance, and replacement of the anti-derailment mechanism 100.

[0023] Specifically, the protection assembly 101 includes a sleeve 101a, an upper cover 101b detachably connected to the upper end of the sleeve 101a, a first spring 101c, a holder 101d provided at the lower end of the upper cover 101b, a rail wheel 101e, and a connecting sleeve 101f, the first spring 101c is fitted to the outside of the holder 101d, one end of the connecting sleeve 101f is hingedly connected to the rail wheel 101e, and the outside of the end remote from the rail wheel 101e is slidably fitted inside the sleeve 101a, and the holder 101d is slidably fitted to the inner wall of the connecting sleeve 101f, It should be noted that the upper cover 101b and the sleeve 101a are detachably connected, which facilitates subsequent inspection and maintenance of the performance of the first spring 101c, and since this connection method is conventional, it will not be described again here. The installation of the first spring 101c also allows the proximity switch 102b to rise and fall according to the running state of the rail wheel 101e, so that the proximity switch 102b and the rail are constantly guiding each other, ensuring the safe running of the cart on the rail.

[0024] Specifically, a straight slot 101g is further provided on the side of the sleeve 101a, and the monitoring assembly 102 includes a connection holder 102a and a proximity switch 102b. One end of the connection holder 102a is connected to the upper end of the connection sleeve 101f and is slidably fitted into the straight slot 101g, and the end of the connection holder 102a that is remote from the connection sleeve 101f is connected to the proximity switch 102b. The lower end of the straight groove opening 101g can restrict the proximity switch 102b from continuing to descend. It should be noted that the connection holder 102a should be flush with the lower end of the first spring 101c, and the length of the connection holder 102a should be such that the lower end of the proximity switch 102b is 1 to 1.5 cm away from the rail wheel 101e, i.e., the lower end of the proximity switch 102b is 1 to 1.5 cm away from the rail contact surface.

[0025] During use, when the rail wheel 101e travels above the horizontal plane of the rail, the first spring 101c is compressed, and the connection holder 102a is on the same plane as the lower end of the first spring 101c. Therefore, when the first spring 101c is compressed, the connection holder 102a rises accordingly, and the proximity switch 102b also rises at the same time. However, the distance between the proximity switch 102b and the contact surface of the rail is always maintained at 1 to 1.5 cm. In other words, the signal of the proximity switch 102b can always be guided by the rail, so a rail derailment signal is not erroneously issued. Conversely, when the rail wheel 101e travels above the horizontal plane of the rail, the first spring 101c is compressed, and the connection holder 102a rises. When the train is running, the first spring 101c expands (Note: the first spring 101c needs to be in a compressed state when attached to ensure a certain elastic force), and because the connection holder 102a is on the same plane as the lower end of the first spring 101c, when the first spring 101c expands, the connection holder 102a drops accordingly, and the proximity switch 102b also drops at the same time. However, the distance between the proximity switch 102b and the rail contact surface is always maintained at 1 to 1.5 cm, which means that the signal from the proximity switch 102b can always be guided by the rail, so a rail derailment signal will not be issued erroneously. During the sampling process, if the sampler auger hits some hard materials during the downward movement, the cart will be pushed up. After the cart is pushed up, the first spring 101c will be quickly extended, and the connecting holder 102a will be pressed against the lower end of the straight groove opening 101g. At this time, the proximity switch 102b cannot continue to descend further, and the sensing distance between the proximity switch 102b and the rail will increase due to the cart being pushed up. When the sensing signal of the proximity switch 102b disappears for a moment, it will issue a cart derailment alarm in a timely manner, and the whole sampler will be powered down, and the sampling The running flow is interrupted, thereby effectively protecting the sampler cart from derailment events. In order to ensure the spring's elasticity, the anti-derailment protection mechanism requires strengthened daily inspections, and performance inspections and maintenance of the first spring 101c must be carried out regularly. During inspection, the coupling 201 and the fixing assembly 202 must be separated by the separation assembly 203, which allows the anti-derailment device and the cart to be removed. After that, the upper cover 101b can be opened to allow performance inspections and maintenance of the spring.

[0026] Example 2 Please refer to Figures 2 to 8, which is a second embodiment of the present invention, which is based on the previous embodiment.

[0027] Specifically, the joint 201 includes a straight cylinder 201a provided at the upper end of the upper cover 101b, and an engagement plate 201b connected to an end of the straight cylinder 201a that is separated from the engagement plate 201b. Specifically, the fixing assembly 202 includes a base 202a provided at the lower end of the moving device, a passage 202b provided in the center of the base 202a, fitting grooves 202c distributed in the axial direction on the side of the passage 202b, a fitting block 202d slidingly fitted into the fitting groove 202c, and a second spring 202e provided between the bottom of the fitting groove 202c and the fitting block 202d, and a first inclined surface 202f is provided at the lower end of the fitting block 202d. The passage 202b is used to insert the engagement plate 201b, and in an initial state, the second spring 202e is at its initial length, the mating block 202d protrudes from the mating groove 202c, and the first inclined surface 202f faces the entrance of the passage 202b. During connection, the engagement plate 201b is inserted into the passage 220b until the edge of the engagement plate 201b contacts the first inclined surface 202f. Then, the mating block 202d is fully pressed into the mating groove 202c. When the engagement plate 201b extends to the end of the passage 202b, the mating block 202d protrudes just enough to secure the engagement plate 201b, i.e., the connection between the coupling 201 and the fixing assembly 202 is completed.

[0028] Specifically, the separation assembly 203 includes a rotary drum 203a rotatably provided within the straight cylinder 201a, a separation tube 203b, an operation tube 203c, and a third spring 203d. The separation tube 203b and the operation tube 203c are both fitted to the outside of the straight cylinder 201a, the operation tube 203c is provided at the lower end of the separation tube 203b, and the third spring 203d is installed between the upper cover 101b and the lower end of the operation tube 203c. The rotating drum 203a is used to drive the separation tube 203b to move upward, so that the mating block 202d can be easily pushed back into the mating groove 202c, the outer diameter of the separation tube 203b should match the outer diameter of the engagement plate 201b, the operating tube 203c can drive the rotation of the rotating drum 203a, and the third spring 203d is used to stabilize the initial position of the operating tube 203c.

[0029] Specifically, a vertical groove 201c is provided on the side of the straight cylinder 201a, a first spiral groove 203e and a second spiral groove 203f are provided on the side of the rotating drum 203a, the first spiral groove 203e is provided at the upper end of the second spiral groove 203f, a first connecting rod 203g is provided on the inner wall of the separation cylinder 203b, and a second connecting rod 203h is provided on the inner wall of the operation cylinder 203c, and both the first connecting rod 203g and the second connecting rod 203h are slidably fitted into the vertical groove 201c, the first connecting rod 203g is slidably fitted into the first spiral groove 203e, and the second connecting rod 203h is slidably fitted into the second spiral groove 203f, The vertical groove 201c restricts the separation tube 203b and the operation tube 203c to move only in the axial direction. It should be noted that the first spiral groove 203e and the second spiral groove 203f rotate in opposite directions. In the initial state, the lower end of the first spiral groove 203e and the upper end of the second spiral groove 203e are both in the vertical groove 201c. In the initial state, the upper end of the operation tube 203c is attached to the lower end of the separation tube 203b, and the operation tube 203c is When moving downward, the second connecting rod 203h drives the rotating drum 203a to rotate, and further drives the first connecting rod 203g and the separation cylinder 203b to move upward. When the second connecting rod 203h moves to the lower end of the second spiral groove 203e, the upper end of the separation cylinder 203b is attached to the lower end of the engagement plate 201b, and at this time, the fitting block 202d is pushed into the fitting groove 202c.

[0030] Specifically, a ring-shaped base 204 is further provided at the upper end of the separation tube 203b, and notches 204a are distributed around the circumference of the ring-shaped base 204. The engagement plate 201b is further provided with a ring-shaped groove 205 at the lower end and angular grooves 201d are distributed around the side wall, and the ring-shaped groove 205 is aligned with the ring-shaped base 204. Long grooves 205a and circular grooves 205b are distributed around the circumference of the outer side of the ring-shaped groove 205, and the long groove 205a is provided in the middle of the circular groove 205b, and the circular groove 205b penetrates the ring-shaped groove 205 and the outside of the engagement plate 201b. When the upper end of the separation tube 203 b is attached to the lower end of the engagement plate 201 b , the ring-shaped base 204 extends into the ring-shaped groove 205 .

[0031] Specifically, the ring-shaped base 204 further includes a circular base 204b that fits into the notch 204a, and a fourth spring 204c that is provided between the bottom of the notch 204a and the circular base 204b. A second inclined surface 204d is provided at the top end of the circular base 204b. In the initial state, the circular base 204b protrudes from the notch 204a, and the fourth spring 204c is in the initial length state.

[0032] Specifically, the engagement plate 201b further includes a round bar 206 provided in the circular groove 205b, and the round bar 206 further includes a baffle 206a provided in the middle of the round bar 206 and slidingly fitted into the long groove 205a, and a fifth spring 206b provided between the baffle 206a and the long groove 205a, and a third inclined surface 206c is further provided on the lower side of the end of the round bar 206 that is away from the ring-shaped groove 205, In the initial state, the round rod 206 is completely within the circular groove 205b.

[0033] While the separation tube 203b is moving upward, the second inclined surface 204d comes into contact with the outer flange of the ring-shaped groove 205, and is thereby pressed into the notch 204a. When the upper end of the separation tube 203b is attached to the lower end of the engagement plate 201b, the notch 204a becomes coaxial with the circular groove 205b. Under the action of the fourth spring 204c, the circular base 204b is protruded into the circular groove 205b, and the round bar 206 is pushed out of the circular groove 205b. At this time, the connection between the separation tube 203b and the engagement plate 201b is completed, and the third inclined surface 206c is protruded into the square-shaped groove 201d. At this time, the separation can be completed by directly extracting the coupling 201. During the process of extracting the coupling 201, the engaging block 202d extends into the angular groove 201d under the action of the second spring 202e and slides into the angular groove 201d. During the sliding movement, the outer flange of the engaging block 202d comes into contact with the third inclined surface 206c and pushes it into the circular groove 205b. The round rod 206c then pushes the circular base 204b out of the circular groove 205b. At this time, under the action of the third spring 203d, the operating tube 203c returns to its original position, and the separation tube 203b separates from the engaging plate 201b and resets.

[0034] When the anti-derailment device and the cart need to be removed during use, the separation tube 203b can be pulled downward to the lower end of the upper cover 101b to release the connection between the anti-derailment device and the cart, and when the anti-derailment device needs to be installed, the coupling 201 can be accurately aligned with the passage 202b and inserted into its bottom end.

[0035] It should be noted that the above embodiments are only for illustrating the technical solutions of the present invention, rather than for limiting them, and the present invention has been described in detail with reference to the preferred embodiments. However, it is understood by those skilled in the art that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope thereof, and all of them shall be included in the scope of the claims of the present invention. [Explanation of symbols]

[0036] Derailment prevention mechanism 100, protection assembly 101, monitoring assembly 102, connection mechanism 200, joint 201, fixing assembly 202, separation assembly 203, sleeve 101a, upper cover 101b, first spring 101c, holder 101d, rail wheel 101e, connection sleeve 101f, straight groove opening 101g, connection holder 102a, proximity switch 102b, straight cylinder 201a, engagement plate 201b, base 202a, passage 202b, fitting groove 202c, fitting block 202b 02d, second spring 202e, first inclined surface 202f, rotating drum 203a, separation tube 203b, operation tube 203c, third spring 203d, vertical groove 201c, first spiral groove 203e, second spiral groove 203f, first connecting rod 203g, second connecting rod 203h, ring-shaped base 204, notch 204a, angular groove 201d, long groove 205a, circular groove 205b, circular base 204b, fourth spring 204c, second inclined surface 204d, round bar 206, baffle 206a, fifth spring 206b, third inclined surface 206c.

Claims

1. a derailment prevention mechanism (100) including a protection assembly (101) provided at a front end of a running wheel of a moving device, and a monitoring assembly (102) connected to the protection assembly (101); The cart derailment prevention device for an automobile sampler comprises a connection mechanism (200) including a joint (201) provided at the upper end of the protection assembly (101), a fixing assembly (202) provided at the bottom end of the moving device and removably connected to the joint (201), and a separation assembly (203) provided at the joint (201).

2. 2. The cart derailment prevention device for an automobile sampler according to claim 1, wherein the protection assembly (101) includes a sleeve (101a), an upper cover (101b) detachably connected to the upper end of the sleeve (101a), a first spring (101c), a holder (101d) provided at the lower end of the upper cover (101b), a rail wheel (101e), and a connecting sleeve (101f), wherein the first spring (101c) is fitted onto the outside of the holder (101d), one end of the connecting sleeve (101f) is hingedly connected to the rail wheel (101e), and the outside of the end remote from the rail wheel (101e) is slidably fitted inside the sleeve (101a), and the holder (101d) is slidably fitted onto the inner wall of the connecting sleeve (101f).

3. A straight groove (101g) is further provided on the side surface of the sleeve (101a), 3. The cart derailment prevention device for an automobile sampler according to claim 2, wherein the monitoring assembly (102) includes a connection holder (102a) and a proximity switch (102b), one end of the connection holder (102a) being connected to the upper end of the connection sleeve (101f) and slidingly fitted into the straight groove opening (101g), and the end of the connection holder (102a) remote from the connection sleeve (101f) being connected to the proximity switch (102b).

4. The cart derailment prevention device for an automobile sampler according to claim 2 or 3, characterized in that the joint (201) includes a straight cylinder (201a) provided at the upper end of the upper cover (101b) and an engagement plate (201b) connected to the end of the straight cylinder (201a) away from the engagement plate (201b).

5. The fixing assembly (202) includes a base (202a) provided at the lower end of the moving device, a passage (202b) provided in the center of the base (202a), a fitting groove (202c) axially distributed on the side of the passage (202b), a fitting block (202d) slidingly fitted into the fitting groove (202c), and a second spring (202e) provided between the bottom of the fitting groove (202c) and the fitting block (202d); 5. The cart derailment prevention device for an automobile sampler according to claim 4, wherein a first inclined surface (202f) is provided at the lower end of the fitting block (202d).

6. 6. The device for preventing cart derailment for an automobile sampler according to claim 5, wherein the separation assembly (203) includes a rotating drum (203a) rotatably mounted within the straight cylinder (201a), a separation tube (203b), an operating tube (203c), and a third spring (203d), wherein the separation tube (203b) and the operating tube (203c) are both fitted to the outside of the straight cylinder (201a), the operating tube (203c) is provided at the lower end of the operating tube (203c), and the third spring (203d) is installed between the upper cover (101b) and the lower end of the operating tube (203c).

7. A vertical groove (201c) is provided on the side surface of the straight cylinder (201a), A first spiral groove (203e) and a second spiral groove (203f) are provided on the side surface of the rotating drum (203a), and the first spiral groove (203e) is provided at the upper end of the second spiral groove (203f); 7. The device for preventing cart derailment of an automobile sampler according to claim 6, characterized in that a first connecting rod (203g) is provided on the inner wall of the separation tube (203b), a second connecting rod (203h) is provided on the inner wall of the operation tube (203c), the first connecting rod (203g) and the second connecting rod (203h) are both fitted in the vertical groove (201c), the first connecting rod (203g) is fitted in the first spiral groove (203e), and the second connecting rod (203h) is fitted in the second spiral groove (203f).

8. A ring-shaped base (204) is further provided at the upper end of the separation tube (203b), and notches (204a) are distributed around the circumference of the ring-shaped base (204).

8. The device for preventing cart derailment for an automobile sampler according to claim 7, wherein the engagement plate (201b) further has a ring-shaped groove (205) at its lower end and angular grooves (201d) distributed on its side wall, the ring-shaped groove (205) aligns with the ring-shaped base (204), and elongated grooves (205a) and circular grooves (205b) are distributed around the outside of the ring-shaped groove (205), the elongated groove (205a) is located in the middle of the circular groove (205b), and the circular groove (205b) penetrates the ring-shaped groove (205) and the outside of the engagement plate (201b).

9. The ring-shaped base (204) further includes a circular base (204b) that fits snugly into the notch (204a), and a fourth spring (204c) that is provided between the bottom of the notch (204a) and the circular base (204b), 9. The cart derailment prevention device for an automobile sampler according to claim 8, wherein a second inclined surface (204d) is provided at the upper end of the circular base (204b).

10. The engagement plate (201b) further includes a round bar (206) provided in the circular groove (205b), The round bar (206) is further provided with a baffle (206a) provided in the middle of the round bar (206) and slidingly fitted into the long groove (205a), and a fifth spring (206b) provided between the baffle (206a) and the long groove (205a), 10. The cart derailment prevention device for an automobile sampler according to claim 9, characterized in that a third inclined surface (206c) is further provided on the underside of the end of the round bar (206) that is away from the ring-shaped groove (205).

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