Self-tightening sleeper bolt operation device and method

Abstract

The present invention discloses a self-tightening and loosening sleeper bolt operation device and method, the operation device comprises: a floating mounting plate movably mounted on a frame of an operation vehicle; a sensor module disposed on the floating mounting plate for realizing bolt detection; an image acquisition module disposed on the floating mounting plate for realizing bolt positioning; and a tensioning shaft mechanism disposed on the floating mounting plate for realizing bolt tightening or loosening operations. The tensioning shaft mechanism can move laterally, longitudinally and vertically relative to the frame to realize the positioning and alignment of the bolts. The present invention can solve the technical problems that the positioning accuracy between the existing sleeper bolt disassembly operation device and the bolts is not high, the lateral distance between the bolt wrenches is fixed, and it cannot adapt to the situation where the bolt spacing changes greatly.

Description

Technical Field

[0001] The invention relates to the technical field of rail engineering machinery, in particular to an operating device and method for self-tightening rail sleeper fastener bolts used for disassembling and assembling rail sleeper fasteners. Background Art

[0002] In the field of railway engineering, railway rails need to be replaced in time when they reach a certain life span. At present, railway track replacement operations mainly adopt manual or mechanical track replacement within the skylight point. Rail fasteners are parts used to connect rails and sleepers (or other types of rail foundations) on railway tracks, also known as intermediate connecting parts. Its function is to fix the rails on the sleepers, maintain the track gauge and prevent the longitudinal and lateral movement of the rails relative to the sleepers. It is a key component to ensure the safety of railway operations. At present, the most commonly used spring-clip I-type rail fasteners for fixing rail tracks include ω spring clips, spiral spikes and round gaskets. The spiral spikes include nuts and bolts. Railway track and sleeper replacement construction requires the separation of the track and the sleeper, which requires the disassembly of the railway fasteners. Therefore, the disassembly of the rail fasteners is one of the important steps in the line track replacement construction.

[0003] At present, the disassembly of rail fasteners is still mainly done manually, specifically using human internal combustion wrenches to work in sections in parallel. Workers use professional rail fastener electric wrenches to disassemble rail fasteners one by one at the railway site. The advantages of this method are flexible operation, the ability to arrange workers according to different maintenance volumes, and strong applicability. Although manual disassembly operations are highly reliable and subjective, they have the disadvantages of low disassembly efficiency, high risk, and time-consuming and labor-intensive disassembly process. Especially when facing long-distance maintenance, a large number of personnel and equipment need to be transported, and there are also the following disadvantages:

[0004] (1) Large demand for labor;

[0005] (2) Complex scheduling and coordination;

[0006] (3) There are many people on site, and the safety risk is high.

[0007] For example, a typical operation scenario is: at the track replacement construction site, 2 operators are assigned every 100 meters to be responsible for the disassembly and assembly of fasteners. For a 2-kilometer track replacement operation within the skylight point, 40 operators and 40 internal combustion motor wrenches will be assigned to disassemble and assemble fasteners. In order to successfully complete the construction within the skylight point and not delay the operation time of other track replacement processes, the time allocated for disassembly and assembly of fasteners is very short, and the labor intensity is very high. After the operation is completed, the transportation of 40 internal combustion wrenches is also very complicated. Due to the large number of operating tools, vehicles cannot be used for transportation, and they can only be pushed to the next skylight point by manpower (2 kilometers of transportation is required for 2 kilometers of operation). Therefore, it takes up a lot of manpower and time, and is not convenient for unified care and management of machinery.

[0008] In the prior art, there are also vehicles that use automatic operation to disassemble and assemble sleeper fastener nuts, such as: the Chinese invention application "A Sleeper Fastener Nut Disassembly and Assembly Vehicle" applied by Changsha Hanpeng Electronic Technology Co., Ltd. on August 13, 2019 and published on October 8, 2019, with publication number CN110303332A. The application discloses a sleeper fastener nut disassembly and assembly vehicle, including a vehicle body and an electrical control system arranged on the vehicle body, a bogie is provided on the lower side of both ends of the vehicle body along the length direction, a track is provided on the lower side of the middle section of the vehicle body along the length direction, a first drive device connected to the electrical control system is provided on the upper side of the track, a disassembly and assembly mechanism connected to the first drive device is provided on the lower side of the track, and a liftable impact wrench is provided on the lower side of the disassembly and assembly mechanism. The sleeper fastener nut disassembly and assembly vehicle performs automated operations on the sleeper fastener nuts through the disassembly and assembly mechanism, thereby improving the operating efficiency of disassembling and assembling the nuts and reducing the operating cost of disassembling and assembling the nuts. However, the disassembly and assembly vehicle is a large-scale track maintenance machine, and the power system uses a diesel generator set or a contact network generator set. The disassembly and assembly mechanism is located under the vehicle body, and the detection system uses two-level detection. At the same time, the disassembly and assembly mechanism can only move and adjust in two directions, lacking adjustment along the direction of the sleeper. The disassembly and assembly mechanism uses a pneumatic impact wrench, which cannot accurately control the tightening torque. Secondly, the positioning accuracy between the disassembly and assembly vehicle operating device and the bolts is not high, and the lateral distance between the bolt wrenches is fixed, which cannot adapt to the situation where the bolt spacing varies greatly, nor can it adapt to the situation where the bolt heights are different. Summary of the invention

[0009] In view of this, the purpose of the present invention is to provide a self-tightening and loosening sleeper bolt operation device and method to solve the technical problems that the positioning accuracy between the existing sleeper bolt disassembly operation device and the bolt is not high, the lateral distance between the bolt wrenches is fixed, and it cannot adapt to large changes in the bolt spacing.

[0010] In order to achieve the above-mentioned invention object, the present invention specifically provides a technical implementation scheme of a self-tightening and loosening sleeper bolt operating device, the self-tightening and loosening sleeper bolt operating device comprising:

[0011] A floating mounting plate movably mounted on a frame of the work vehicle;

[0012] A sensor module disposed on the floating mounting plate and used for bolt detection;

[0013] An image acquisition module disposed on the floating mounting plate and used to realize the positioning of the bolts;

[0014] And a tensioning shaft mechanism is arranged on the floating mounting plate and is used to realize the tightening or loosening operation of the bolt.

[0015] The tension shaft mechanism can move in the transverse, longitudinal and vertical directions relative to the frame to achieve positioning and alignment of the bolt.

[0016] Furthermore, the operating device further comprises a transverse guide post, a transverse guide sleeve, a connecting beam, a vertical driving mechanism, a vertical guide post, a vertical guide sleeve and a moving beam. Two transverse guide posts which are parallel to each other and arranged oppositely along the track direction are mounted on the movable frame, the transverse guide sleeve is mounted on the transverse guide post, and the transverse guide sleeve can move along the transverse guide post. The vertical guide post is mounted on the transverse guide sleeve, the vertical guide sleeve is mounted on the vertical guide post, and the vertical guide sleeve can move along the vertical guide post. The connecting beam is connected between the two transverse guide sleeves, the moving beam is connected between the two vertical guide sleeves, one end of the vertical driving mechanism is connected to the connecting beam, and the other end is connected to the floating mounting plate after passing through the moving beam. The tension shaft mechanism is mounted on the floating mounting plate, and the vertical driving mechanism can drive the tension shaft mechanism to perform lifting or pressing operations through the floating mounting plate. The operating device further comprises a transverse driving mechanism, one end of the transverse driving mechanism is connected to the frame, and the other end is connected to the moving beam or the floating mounting plate, and the tension shaft mechanism can be driven to move in the transverse direction through the transverse driving mechanism.

[0017] Furthermore, the working device also includes a second longitudinal drive mechanism, a longitudinal guide column and a longitudinal guide sleeve. The longitudinal guide column is installed on the vertical guide sleeve, and the floating mounting plate is installed on the longitudinal guide sleeve. The longitudinal guide sleeve is installed on the longitudinal guide column, and the longitudinal guide sleeve can move along the longitudinal guide column. The second longitudinal drive mechanism is arranged between the axle or the movable frame and the floating mounting plate. The tension shaft mechanism can be driven to move along the track through the second longitudinal drive mechanism.

[0018] Furthermore, the frame includes a main frame and a movable frame, and the working device also includes a movable frame movably mounted on the main frame. The movable frame is arranged on the main frame in the transverse direction, and the movable frame can move longitudinally along the main frame. The working device is arranged on at least one of the left and right sides of the movable frame, and is located on the outer side of the main frame in the transverse direction.

[0019] Furthermore, the working device also includes a first longitudinal driving mechanism arranged between the axle or the main frame and the movable frame, and the movable frame can be driven to move longitudinally through the first longitudinal driving mechanism.

[0020] Furthermore, the movable frame is driven by the first longitudinal driving mechanism to make the tension axis mechanism reach the initial position. The sensor module is used for the initial positioning of the bolt, the image acquisition module is used for the second positioning of the bolt, and the tension axis mechanism is driven by the vertical driving mechanism, the second longitudinal driving mechanism and the transverse driving mechanism to achieve vertical, longitudinal and transverse three-coordinate precise positioning.

[0021] Furthermore, the sensor module is installed in front of the tensioning shaft mechanism along the working direction, and the image acquisition module is installed behind the tensioning shaft mechanism along the working direction. Both the image acquisition module and the sensor module maintain a set distance from the tensioning shaft mechanism.

[0022] Furthermore, the working device further comprises a rail clamping mechanism disposed on the movable frame, and when the working vehicle is in a traveling operation, the rail is clamped by the rail clamping mechanism, and then the frame is driven to move forward by the first longitudinal driving mechanism. When the frame reaches a predetermined position, the rail clamping mechanism is released from the rail, and then the movable frame is driven to move forward by the first longitudinal driving mechanism.

[0023] Furthermore, the rail clamping mechanism includes a driving module, a fixed seat, and a connecting rod, a guide rod and a rocker arm which are symmetrically arranged in sequence from the inside to the outside along the horizontal direction with the fixed seat as the center. The fixed seat is installed on the movable frame, and the driving module is installed in the fixed seat. One end of the two connecting rods is connected to the driving module and is respectively arranged on the left and right sides of the driving module. The other end of the connecting rod is connected to one end of the guide rod, and the guide rod is movably mounted on the movable frame. The other end of the guide rod abuts against one end of the rocker arm, and the other end of the rocker arm is provided with a rail clamping block. The rocker arm is movably connected to the movable frame through a pin shaft, and the rocker arm can rotate around the pin shaft. One end of the elastic member is connected to the movable frame, and the other end is connected to the rocker arm to provide pulling force for the rocker arm.

[0024] Furthermore, when the driving module contracts inward, it drives the connecting rod to move, and then drives the guide rod to move outward, and the guide rod pushes the rocker arm outward to rotate it, so that the rail clamping block connected to the rocker arm clamps the rail. When the driving module extends outward, it drives the connecting rod to move, and then pulls the guide rod to move inward, and the rocker arm is lifted upward under the pulling force of the elastic member, so that the rail clamping block is loosened from the rail.

[0025] Furthermore, the movable frame is located between two wheel sets of the working vehicle, and the lateral width of the movable frame is greater than the lateral width of the main frame. The working device is symmetrically arranged on the left and right inner sides of the movable frame along the lateral direction, and is located on the left and right outer sides of the main frame along the lateral direction.

[0026] Furthermore, the operating device includes two tensioning shaft mechanisms arranged side by side in the transverse direction, and the installation positions of the two tensioning shaft mechanisms correspond to the positions of two bolts of the same fastener.

[0027] The present invention also specifically provides a technical implementation scheme of a self-tightening rail sleeper bolt operation method based on the above device, and the self-tightening rail sleeper bolt operation method comprises the following steps:

[0028] S10) When the working vehicle is moving, the rail is clamped by the rail clamping mechanism, and the frame is driven forward by the first longitudinal driving mechanism, and the sensor module detects the bolt at the same time; when the bolt is detected, the first longitudinal driving mechanism stops pushing the frame, and the rail clamping mechanism is loosened from the rail;

[0029] S20) the image acquisition module starts taking pictures and acquiring the position of the bolt, and drives the tensioning shaft mechanism to adjust the position along the rail direction through the second longitudinal drive mechanism, and drives the tensioning shaft mechanism to adjust the position along the horizontal direction through the horizontal drive mechanism;

[0030] S30) when the tensioning shaft mechanism reaches a specified position, the vertical drive mechanism presses down a set distance so that the tensioning shaft mechanism is sleeved on the bolt, and drives the tensioning shaft mechanism to tighten or loosen the bolt;

[0031] S40) After the operation is completed, the vertical drive mechanism releases pressure and resets, the second longitudinal drive mechanism and the transverse drive mechanism drive the tension shaft mechanism to reset, and the operation vehicle continues to travel;

[0032] S50) If the bolt is not detected, after the frame travels a set distance, the rail clamping mechanism is loosened from the rail, and the movable frame is driven forward by the first longitudinal driving mechanism, and the working vehicle continues to travel.

[0033] Furthermore, in the step S10), the movable frame is driven by the first longitudinal drive mechanism to make the tension axis mechanism reach the initial position. In the step S20), the tension axis mechanism is driven by the vertical drive mechanism, the second longitudinal drive mechanism and the transverse drive mechanism to achieve vertical, longitudinal and transverse three-coordinate precise positioning.

[0034] Furthermore, in the step S40), after the tensioning shaft mechanism completes one operation, the rail is clamped by the rail clamping mechanism, and then the frame is driven to move forward by the first longitudinal driving mechanism. When the frame reaches the predetermined position, the rail clamping mechanism is loosened from the rail, and then the movable frame is driven to move forward by the first longitudinal driving mechanism, and the working vehicle continues to perform the traveling operation.

[0035] Furthermore, in the step S10), when the driving module contracts inward, it drives the connecting rod to move, and then drives the guide rod to move outward, and the guide rod pushes the rocker arm outward to rotate, so that the rail clamping block connected to the rocker arm clamps the rail. When the driving module pushes outward, it drives the connecting rod to move, and then pulls the guide rod to move inward, and the rocker arm is lifted upward under the pulling force of the elastic member, so that the rail clamping block is loosened from the rail.

[0036] By implementing the technical solution of the self-tightening rail sleeper bolt operation device and method provided by the present invention, the following beneficial effects are achieved:

[0037] (1) The self-tensioning rail sleeper bolt operation device and method of the present invention has a tensioning shaft mechanism that can move in the horizontal, longitudinal and vertical directions to achieve three-coordinate adjustment of the tensioning shaft mechanism and high-precision positioning of the bolts, which can effectively solve the technical problems of low positioning accuracy between the operation device and the bolts, and the fixed horizontal distance between the tensioning shaft mechanisms, which cannot adapt to large changes in the bolt spacing;

[0038] (2) The self-tightening and loosening sleeper bolt operation device and method of the present invention uses a visual sensing system that combines image recognition and sensors to perform secondary positioning of the bolts, which can accurately identify the bolt features and obtain the bolt positions;

[0039] (3) In the self-tightening and loosening sleeper bolt operation device and method of the present invention, the vertical driving mechanism can drive the tensioning shaft mechanism to perform the pressing operation through the floating mounting plate, which can not only adapt to the inclination of the sleeper bolt within a certain range, but also prevent the bolt from rigidly colliding with the bolt due to excessive downward pressure, thereby realizing the function of the tensioning shaft adapting to different bolt heights;

[0040] (4) The self-tightening and loosening sleeper bolt operation device and method of the present invention, by adopting a rail clamping mechanism driven by an oil cylinder, can simultaneously achieve rapid braking of the operating vehicle and maintain relative fixity between the operating vehicle body and the rail when the bolts are loosened or tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic front view of the installation structure of a specific embodiment of the self-tightening and loosening sleeper bolt operation device of the present invention on a work vehicle;

[0043] Figure 2 It is a schematic front view of the installation structure of a specific embodiment of the self-tightening and loosening sleeper bolt operation device of the present invention from another viewing angle;

[0044] Figure 3 It is a schematic diagram of the three-dimensional installation structure of a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention on a working vehicle;

[0045] Figure 4It is a schematic bottom view of the structure of a specific embodiment of the self-tightening and loosening sleeper bolt operation device of the present invention applied to an operation vehicle;

[0046] Figure 5 It is a schematic front view of the structure of a specific embodiment of the self-tightening and loosening sleeper bolt operation device of the present invention applied to an operation vehicle;

[0047] Figure 6 It is a three-dimensional structural schematic diagram of a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention;

[0048] Figure 7 It is a schematic structural front view of a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention;

[0049] Figure 8 It is a schematic side view of the structure of a specific embodiment of the self-tightening rail sleeper bolt operating device of the present invention;

[0050] Fig. 9 It is a schematic top view of the structure of a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention;

[0051] Fig.10 It is a three-dimensional structural schematic diagram of a rail clamping mechanism in a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention;

[0052] Fig.11 It is a front view of the action principle of the rail clamping mechanism in a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention;

[0053] Fig.12 It is a top view of the action principle of the rail clamping mechanism in a specific embodiment of the self-tightening and loosening sleeper bolt operating device of the present invention;

[0054] In the figure: 1-power module, 2-control cabinet, 3-frame, 4-generator, 5-first longitudinal drive mechanism, 6-wheel set, 61-driving wheel set, 62-driven wheel set, 63-axle, 7-longitudinal slide rail, 8-rail clamping mechanism, 801-drive module, 802-fixed seat, 803-connecting rod, 804-guide rod, 805-rocker arm, 806-elastic member, 807-rail clamping block, 808-pin shaft, 9-operating device, 901-transverse guide column, 902-transverse guide sleeve, 903 -connecting beam, 904-elastic shaft mechanism, 905-vertical drive mechanism, 906-longitudinal guide column, 907-longitudinal guide sleeve, 908-vertical guide column, 909-vertical guide sleeve, 910-movable beam, 911-floating mounting plate, 912-image acquisition module, 913-sensor module, 10-lateral drive mechanism, 11-movable frame, 12-second longitudinal drive mechanism, 13-rail, 14-sleeper, 15-fastener, 16-bolt, 17-main frame, 100-work vehicle. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0059] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0060] As attached Figure 1 To Attachment Fig.12 As shown, a specific embodiment of the self-tightening and loosening sleeper bolt operation device and method of the present invention is given, and the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0061] Example 1

[0062] As attached Figure 1 To Attachment Figure 5 As shown, an embodiment of the self-tightening sleeper bolt operating device of the present invention, the operating device 9 specifically comprises:

[0063] A floating mounting plate 911 movably mounted on the frame 3 of the work vehicle 100;

[0064] A sensor module 913 disposed on the floating mounting plate 911 for detecting the bolt 16;

[0065] An image acquisition module 912 disposed on the floating mounting plate 911 and used to realize the positioning of the bolt 16;

[0066] And a tensioning shaft mechanism 904 is arranged on the floating mounting plate 911 and is used to realize the tightening or loosening operation of the bolt 16.

[0067] The tension shaft mechanism 904 can be arranged in a lateral direction (such as the attached Figure 3 , 4 , the direction indicated by W in 5 and 6), longitudinal direction (as shown in the attached Figure 4 and 6 The direction indicated by L in the figure is also the track direction) and the vertical direction (as shown in the attached figure). Figure 1 , 2 , 3, 5 and 6) to achieve the positioning alignment of the bolt 16.

[0068] The vehicle frame 3 further includes a main frame 17 and a movable frame 11, and the working device 9 further includes the movable frame 11 movably mounted on the main frame 17. The movable frame 11 is disposed on the main frame 17 in the transverse direction, and the movable frame 11 can move longitudinally along the main frame 17. The working device 9 is disposed on at least one of the left and right sides of the movable frame 11, and is located on the outer side of the main frame 17 in the transverse direction. In this embodiment, the working device 9 is disposed on the left and right sides of the movable frame 11.

[0069] The working device 9 also includes a first longitudinal driving mechanism 5 disposed between the axle 63 of the wheelset 6 or the main frame 17 and the movable frame 11 , and the first longitudinal driving mechanism 5 can drive the movable frame 11 to move forward and backward in the longitudinal direction.

[0070] As attached Figure 6 To Attachment Fig. 9As shown, the working device 9 further includes a transverse guide column 901, a transverse guide sleeve 902, a connecting beam 903, a vertical driving mechanism 905, a vertical guide column 908, a vertical guide sleeve 909, a movable beam 910 and a floating mounting plate 911. Two transverse guide columns 901 that are parallel to each other (extending in the transverse direction) and arranged oppositely along the track direction (i.e., longitudinal direction) are installed on the movable frame 11, and two transverse guide sleeves 902 that are parallel to each other (extending in the vertical direction) and arranged oppositely along the transverse direction are movably installed on the transverse guide column 901 on one side, and the transverse guide sleeve 902 can move along the transverse guide column 901. Four vertical guide columns 908 are arranged vertically and parallel to each other and installed on the transverse guide sleeve 902, and two vertical guide sleeves 909 are movably installed on the vertical guide column 908, parallel to each other (extending in the transverse direction) and arranged oppositely along the track direction, and the vertical guide sleeve 909 can move along the vertical guide column 908. The connecting beam 903 is connected between the two transverse guide sleeves 902, the moving beam 910 is connected between the two vertical guide sleeves 909, one end of the vertical driving mechanism 905 is connected to the connecting beam 903, and the other end passes through the moving beam 910 and is connected to the floating mounting plate 911. The tension shaft mechanism 904 is installed on the floating mounting plate 911, and the vertical driving mechanism 905 can drive the tension shaft mechanism 904 to perform lifting or pressing operations through the floating mounting plate 911. The working device 9 also includes a transverse driving mechanism 10, one end of which is connected to the frame 3, and the other end is connected to the moving beam 910 or the floating mounting plate 911, and the tension shaft mechanism 904 can be driven to move in the transverse direction through the transverse driving mechanism 10.

[0071] The working device 9 also includes a second longitudinal drive mechanism 12, a longitudinal guide column 906 and a longitudinal guide sleeve 907. Two longitudinal guide columns 906 that are parallel to each other (extending along the track direction) and arranged opposite to each other in the transverse direction are installed between two vertical guide sleeves 909, and two longitudinal guide sleeves 907 are movably installed on the longitudinal guide column 906 on one side. The longitudinal guide sleeve 907 can move along the longitudinal guide column 906, and the floating mounting plate 911 is installed on the longitudinal guide sleeve 907. The second longitudinal drive mechanism 12 is arranged between the axle 63 or the movable frame 11 and the floating mounting plate 911. The tension shaft mechanism 904 can be driven to move along the track direction through the second longitudinal drive mechanism 12. The movable frame 11 is driven by the first longitudinal drive mechanism 5 to make the tension shaft mechanism 904 reach the initial position. The sensor module 913 is used for the initial positioning of the bolt 16, and the image acquisition module 912 is used for the second positioning of the bolt 16. The vertical drive mechanism 905, the second longitudinal drive mechanism 12 and the transverse drive mechanism 10 drive the tension shaft mechanism 904 to achieve vertical, longitudinal and transverse three-coordinate precise positioning. In this embodiment, a two-stage positioning method is used to locate the relationship between the tension shaft mechanism 904 and the bolt 16 of the fastener 15. The first stage positioning uses the first longitudinal drive mechanism 5 to push the movable frame 11 so that the tension shaft mechanism 904 reaches the initial position. The second stage positioning relies on the three-way sliding positioning mechanism on the operating device 3, which is driven by the driving mechanism in three directions to achieve precise positioning in three coordinates. At the same time, the vertical drive mechanism 905 can drive the tension shaft mechanism 904 to perform a downward pressing operation through the floating mounting plate 911, which can cooperate with the visual sensing system to deal with the situation of different bolt heights.

[0072] The image acquisition module 912 and the sensor module 913 are further mounted on the floating mounting plate 911. The sensor module 913 is mounted on the tension shaft mechanism 904 along the working direction (such as the attached Figure 1 , 2 3 and L in front of the image acquisition module 912, the image acquisition module 912 is installed behind the tension shaft mechanism 904 along the working direction, and the image acquisition module 912 and the sensor module 913 are both kept at a set distance from the tension shaft mechanism 904. The image acquisition module 912 can further adopt a camera assembly, and the sensor module 913 is selected from any one or a combination of laser sensors, ultrasonic sensors, proximity switches and metal induction sensors.

[0073] As attached Figure 2As shown, a rail clamping mechanism 8 is further provided on the movable frame 11. When the working vehicle 100 is in the traveling operation, the rail 13 is clamped by the rail clamping mechanism 8, and then the frame 3 is driven to move forward by the first longitudinal drive mechanism 5. When the frame 3 reaches the predetermined position, the rail clamping mechanism 8 is loosened from the rail 13, and then the movable frame 11 is driven to move forward by the first longitudinal drive mechanism 5. In this embodiment, the driving mode of the working vehicle 100 is completed by the cooperation of the rail clamping mechanism 8 and the first longitudinal drive mechanism 5. After the tensioning shaft mechanism 904 completes the operation, the movable frame 11 clamps the rail 13 by the rail clamping mechanism 8, and then the frame 3 is driven to move forward by the first longitudinal drive mechanism 5. When the frame 3 reaches the predetermined position, the rail clamping mechanism 8 releases the clamping claw, and then the movable frame 11 is pushed forward by the first longitudinal drive mechanism 5.

[0074] As attached Fig.10 , 11 As shown in FIG. 12 , the rail clamping mechanism 8 further includes a driving module 801, a fixing seat 802, and a fixing seat 802 as the center and extending in a horizontal direction (as shown in FIG. Fig.10 , 11 12 and 13 ) are symmetrically arranged from inside to outside. The fixing seat 802 is installed on the movable frame 11, and the driving module 801 is installed in the fixing seat 802. One end of the two connecting rods 803 is connected to the driving module 801, and is respectively arranged on the left and right sides of the driving module 801. The other end of the connecting rod 803 is connected to one end of the guide rod 804, and the guide rod 804 is movably installed on the movable frame 11. The other end of the guide rod 804 is in contact with one end of the rocker arm 805, and the other end of the rocker arm 805 is provided with a rail clamping block 807. The rocker arm 805 is movably connected to the movable frame 11 through a pin 808, and the rocker arm 805 can rotate around the pin 808. One end of the elastic member 806 is connected to the movable frame 11, and the other end is connected to the rocker arm 805, providing a pulling force for the rocker arm 805. As a preferred embodiment of the present invention, the driving module 801 may further adopt a hydraulic cylinder, and the elastic member 806 may further adopt a tension spring.

[0075] When the driving module 801 contracts inward, it drives the connecting rod 803 to move, and then drives the guide rod 804 to move outward. The guide rod 804 pushes the rocker arm 805 outward and rotates it, so that the rail clamping block 807 connected to the rocker arm 805 clamps the rail 13. When the driving module 801 extends outward, it drives the connecting rod 803 to move, and then pulls the guide rod 804 to move inward. The rocker arm 805 is lifted upward under the pulling force of the elastic member 806, so that the rail clamping block 807 is loosened from the rail 13. In this embodiment, the rail clamping mechanism 8 adopts a structure of clamping the rail from the outside of the rail 13, and can also adopt a structure of clamping the rail from the inside of the rail 13.

[0076] As attached Figure 4 As shown, the wheel set 6 further includes a driving wheel set 61 and a driven wheel set 62, and the track clamping mechanism 8 is located in front of the working device 9 along the working direction and close to the driving wheel set 61. The movable frame 11 is located between the two sets of wheel sets 6 of the working vehicle 100 (in this embodiment, the driving wheel set 61 and the driven wheel set 62), and the lateral width of the movable frame 11 is greater than the lateral width of the main frame 17. The working device 9 is symmetrically arranged on the left and right inner sides of the movable frame 11 along the lateral direction, and is located on the left and right outer sides of the main frame 17 along the lateral direction.

[0077] The rail 11 is fixed to the sleeper 12 by a fastener 14, and the fastener 14 further includes a bolt 16. Figure 4 and attached Figure 5 As shown, the operating device 9 includes two tensioning shaft mechanisms 904 arranged side by side in the transverse direction, and the installation positions of the two tensioning shaft mechanisms 904 correspond to the positions of two bolts 16 of the same fastener 15, so as to complete the bolt disassembly and assembly operations of four groups of fasteners 14 fixed between two rails 11 and one sleeper 12 at one time.

[0078] In this embodiment, the first longitudinal drive mechanism 5, the transverse drive mechanism 10, the second longitudinal drive mechanism 12, the vertical drive mechanism 905 and the drive module 801 can be specifically driven by oil cylinders, air cylinders, electric cylinders or motors. The combination of guide sleeves and guide posts (transverse guide posts 901 and transverse guide sleeves 902, longitudinal guide posts 906 and longitudinal guide sleeves 907, and vertical guide posts 908 and vertical guide sleeves 909) can also use alternative structures such as guide rail and slider combination, parallelogram mechanism, and gear and rack combination to realize the moving pair function.

[0079] Example 2

[0080] As attached Figure 1 To Attachment Figure 5 As shown, an operating device 9 described in Example 1 is applied to an embodiment of a self-tightening and loosening sleeper bolt operating vehicle, and the operating vehicle 100 specifically includes:

[0081] The frame 3 is supported on the rails 13 by the wheelset 6;

[0082] A movable frame 11 is disposed on the vehicle frame 3 in the transverse direction and between the two wheel sets 6 and can move longitudinally along the vehicle frame 3;

[0083] The working device 9 is arranged on at least one of the left and right sides of the movable frame 11 and is located on the outer side of the vehicle frame 3 in the lateral direction.

[0084] The operating device 9 is provided with a sensor module 913 for detecting the bolt 16, an image acquisition module 912 for locating the bolt 16, and a tensioning shaft mechanism 904 for tightening or loosening the bolt 16. The operating device 9 can drive the tensioning shaft mechanism 904 to move in a lateral direction (such as the attached Figure 3 , 4 , the direction indicated by W in 5 and 6), longitudinal direction (as shown in the attached Figure 4 and 6 The direction indicated by L in the figure is also the track direction) and the vertical direction (as shown in the attached figure). Figure 1 , 2 , 3, 5 and 6) to achieve the positioning alignment of the bolt 16.

[0085] The frame 3 is further provided with a longitudinal slide rail 7, and a first longitudinal drive mechanism 5 is provided between the axle 63 of the wheelset 6 and the movable frame 11, and the movable frame 11 can be driven to move forward and backward along the longitudinal slide rail 7 by the first longitudinal drive mechanism 5. The frame 3 carries a power module 1, a control cabinet 2 and a generator 4. As a preferred embodiment of the present invention, the power module 1 further specifically adopts an air power source, which can not only effectively reduce the cost compared with the oil cylinder drive, but also effectively avoid the motor loss caused by frequent start and stop compared with the motor drive. The power module 1 can also be driven by a hydraulic power source cylinder or a motor. The frame 3 is divided into two layers, the upper layer is placed with the power module 1, the control cabinet 2 and the generator 4, the lower layer is installed with the longitudinal slide rail 7 and the first longitudinal drive mechanism 5, and the wheelset 6 is installed below the frame 3.

[0086] Example 3

[0087] An embodiment of a self-tightening sleeper bolt operation method based on the device described in embodiment 1, the method specifically comprises the following steps:

[0088] S10) When the working vehicle 100 is moving, the rail 13 is clamped by the rail clamping mechanism 8, and the frame 3 is driven forward by the first longitudinal driving mechanism 5, and the sensor module 913 detects the bolt 16 at the same time; when the bolt 16 is detected, the first longitudinal driving mechanism 5 stops pushing the frame 3, and the rail clamping mechanism 8 is loosened from the rail 13;

[0089] S20) The image acquisition module 912 starts taking pictures and acquiring the position of the bolt 16, and drives the tension shaft mechanism 904 to adjust the position along the rail direction through the second longitudinal drive mechanism 12, and drives the tension shaft mechanism 904 to adjust the position along the horizontal direction through the horizontal drive mechanism 10;

[0090] S30) When the tensioning shaft mechanism 904 reaches the specified position, the vertical drive mechanism 905 presses down a set distance so that the tensioning shaft mechanism 904 is sleeved on the bolt 16, and drives the tensioning shaft mechanism 904 to tighten or loosen the bolt 16;

[0091] S40) After the operation is completed, the vertical drive mechanism 905 is depressurized and reset, the second longitudinal drive mechanism 12 and the transverse drive mechanism 10 drive the tension shaft mechanism 904 to reset, and the operation vehicle 100 continues to travel;

[0092] S50) If the bolt 16 is not detected, after the vehicle frame 3 travels a set distance, the rail clamping mechanism 8 is loosened from the rail 13, and then the first longitudinal driving mechanism 5 drives the movable frame 11 to move forward, and the working vehicle 100 continues to travel.

[0093] In step S10), the movable frame 11 is driven by the first longitudinal drive mechanism 5 to make the tension shaft mechanism 904 reach the initial position. In step S20), the tension shaft mechanism 904 is driven by the vertical drive mechanism 905, the second longitudinal drive mechanism 12 and the transverse drive mechanism 10 to achieve vertical, longitudinal and transverse three-coordinate precise positioning.

[0094] In step S40), after the tensioning shaft mechanism 904 completes one operation, the rail 13 is clamped by the rail clamping mechanism 8, and then the frame 3 is driven to move forward by the first longitudinal driving mechanism 5. When the frame 3 reaches the predetermined position, the rail clamping mechanism 8 is loosened from the rail 13, and then the movable frame 11 is driven to move forward by the first longitudinal driving mechanism 5, and the working vehicle 100 continues to travel.

[0095] In step S10), when the driving module 801 contracts inward, it drives the connecting rod 803 to move, and then drives the guide rod 804 to move outward. The guide rod 804 pushes the rocker arm 805 outward to rotate, so that the rail clamping block 807 connected to the rocker arm 805 clamps the rail 13. When the driving module 801 extends outward, it drives the connecting rod 803 to move, and then pulls the guide rod 804 to move inward. The rocker arm 805 is lifted upward under the pulling force of the elastic member 806, so that the rail clamping block 807 connected to the rocker arm 805 is loosened from the rail 13.

[0096] In the working method described in Example 3, the working vehicle 100 moves in a step-by-step manner, and can also move in a continuous motion manner, that is, the body of the working vehicle 100 keeps moving, and the tensioner shaft mechanism 904 remains stationary relative to the ground under the action of the first longitudinal drive mechanism 5. In this case, the track clamping mechanism 8 is not required.

[0097] By implementing the technical solution of the self-tightening rail sleeper bolt operation device and method described in the specific embodiment of the present invention, the following technical effects can be produced:

[0098] (1) The self-tightening and loosening sleeper bolt operation device and method described in the specific embodiment of the present invention, the tensioning shaft mechanism can move in the horizontal, longitudinal and vertical directions to achieve three-coordinate adjustment of the tensioning shaft mechanism and high-precision positioning of the bolt, which can effectively solve the technical problems of low positioning accuracy between the operation device and the bolt, and the fixed horizontal distance between the tensioning shaft mechanisms, which cannot adapt to large changes in the bolt spacing;

[0099] (2) The self-tightening rail sleeper bolt operation device and method described in the specific embodiment of the present invention, the detection system uses a visual sensing system combining image recognition and sensors to perform secondary positioning of the bolts, which can accurately identify the bolt features and obtain the bolt position;

[0100] (3) The self-tightening and loosening sleeper bolt operation device and method described in the specific embodiment of the present invention can drive the tensioning shaft mechanism to perform the pressing operation through the floating mounting plate, which can not only adapt to the inclination of the sleeper bolt within a certain range, but also avoid rigid collision with the bolt due to excessive downward pressure, thereby realizing the function of the tensioning shaft adapting to different bolt heights;

[0101] (4) The self-tightening and loosening sleeper bolt operation device and method described in the specific embodiment of the present invention can simultaneously achieve rapid braking of the operating vehicle and maintain relative fixity between the operating vehicle body and the rail when the bolts are loosened or tightened by adopting a rail clamping mechanism driven by an oil cylinder.

[0102] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0103] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A self-tightening sleeper bolt operating device, characterized in that: The operating device (9) comprises: A floating mounting plate (911) movably mounted on a frame (3) of a working vehicle (100); A sensor module (913) disposed on the floating mounting plate (911) and used to detect the bolts (16), wherein the sensor module (913) is selected from any one or a combination of a laser sensor, an ultrasonic sensor, a proximity switch and a metal induction sensor; An image acquisition module (912) disposed on the floating mounting plate (911) and used to realize positioning of the bolt (16); and a tightening shaft mechanism (904) disposed on the floating mounting plate (911) and used to realize tightening or loosening operations of the bolts (16); The tension shaft mechanism (904) can move in the transverse, longitudinal and vertical directions relative to the vehicle frame (3) to achieve positioning and alignment of the bolt (16); The vehicle frame (3) comprises a main frame (17); the working device (9) further comprises a movable frame (11) movably mounted on the main frame (17); the movable frame (11) is arranged on the main frame (17) in a transverse direction, and the movable frame (11) can move longitudinally along the main frame (17); the working device (9) is arranged on at least one of the left and right sides of the movable frame (11) and is located on the outer side of the main frame (17) in a transverse direction; the working device (9) further comprises a first longitudinal driving mechanism (63) arranged between the vehicle axle (63) or the main frame (17) and the movable frame (11). 5), the first longitudinal drive mechanism (5) can drive the movable frame (11) to move longitudinally; the working device (9) also includes a rail clamping mechanism (8) arranged on the movable frame (11), when the working vehicle (100) is moving, the rail (13) is clamped by the rail clamping mechanism (8), and then the frame (3) is driven to move forward by the first longitudinal drive mechanism (5); when the frame (3) reaches a predetermined position, the rail clamping mechanism (8) is released from the rail (13), and then the movable frame (11) is driven to move forward by the first longitudinal drive mechanism (5); The rail clamping mechanism (8) comprises a driving module (801), a fixing seat (802), and connecting rods (803), guide rods (804) and rocker arms (805) which are symmetrically arranged in sequence from the inside to the outside along the transverse direction with the fixing seat (802) as the center; the fixing seat (802) is mounted on the movable frame (11), and the driving module (801) is mounted in the fixing seat (802); one end of each of the two connecting rods (803) is connected to the driving module (801), and the two connecting rods (803) are respectively arranged on the left and right sides of the driving module (801); the other end of the connecting rod (803) is connected to the guide rod ( The guide rod (804) is connected to one end of the movable frame (11); the guide rod (804) is movably mounted on the movable frame (11); the other end of the guide rod (804) is in contact with one end of the rocker arm (805); the other end of the rocker arm (805) is provided with a rail clamping block (807); the rocker arm (805) is movably connected to the movable frame (11) via a pin shaft (808); the rocker arm (805) is rotatable around the pin shaft (808); one end of the elastic member (806) is connected to the movable frame (11), and the other end is connected to the rocker arm (805), so as to provide a pulling force for the rocker arm (805); When the driving module (801) contracts inward, it drives the connecting rod (803) to move, thereby driving the guide rod (804) to move outward, and the guide rod (804) pushes the rocker arm (805) outward and rotates it, so that the rail clamping block (807) connected to the rocker arm (805) clamps the steel rail (13); when the driving module (801) extends outward, it drives the connecting rod (803) to move, thereby pulling the guide rod (804) to move inward, and the rocker arm (805) is lifted upward under the pulling force of the elastic member (806), so that the rail clamping block (807) is loosened from the steel rail (13).

2. The self-tightening sleeper bolt operation device according to claim 1, characterized in that: The operating device (9) further comprises a transverse guide column (901), a transverse guide sleeve (902), a connecting beam (903), a vertical driving mechanism (905), a vertical guide column (908), a vertical guide sleeve (909) and a movable beam (910); two transverse guide columns (901) which are parallel to each other and arranged opposite to each other along the track direction are mounted on the movable frame (11); the transverse guide sleeve (902) is mounted on the transverse guide column (901), and the transverse guide sleeve (902) can move along the transverse guide column (901); the vertical guide column (908) is mounted on the transverse guide sleeve (902), and the vertical guide sleeve (909) is mounted on the vertical guide column (908), and the vertical guide sleeve (909) can move along the vertical guide column (908); the connecting beam (903) is connected to the two transverse guide sleeves (902). The movable beam (910) is connected between two vertical guide sleeves (909); one end of the vertical drive mechanism (905) is connected to the connecting beam (903), and the other end passes through the movable beam (910) and is connected to the floating mounting plate (911); the tension shaft mechanism (904) is installed on the floating mounting plate (911), and the vertical drive mechanism (905) can drive the tension shaft mechanism (904) to perform lifting or pressing operations through the floating mounting plate (911); the working device (9) also includes a transverse drive mechanism (10), one end of the transverse drive mechanism (10) is connected to the frame (3), and the other end is connected to the movable beam (910) or the floating mounting plate (911), and the tension shaft mechanism (904) can be driven to move in the transverse direction through the transverse drive mechanism (10).

3. The self-tightening sleeper bolt operation device according to claim 2, characterized in that: The operating device (9) further comprises a second longitudinal drive mechanism (12), a longitudinal guide column (906) and a longitudinal guide sleeve (907); the longitudinal guide column (906) is mounted on the vertical guide sleeve (909), and the floating mounting plate (911) is mounted on the longitudinal guide sleeve (907); the longitudinal guide sleeve (907) is mounted on the longitudinal guide column (906), and the longitudinal guide sleeve (907) can move along the longitudinal guide column (906); the second longitudinal drive mechanism (12) is arranged between the axle (63) or the movable frame (11) and the floating mounting plate (911); the tension shaft mechanism (904) can be driven to move along the track through the second longitudinal drive mechanism (12).

4. The self-tightening sleeper bolt operation device according to claim 3, characterized in that: The movable frame (11) is driven by the first longitudinal drive mechanism (5) to make the tension shaft mechanism (904) reach an initial position; the sensor module (913) is used for the initial positioning of the bolt (16), the image acquisition module (912) is used for the second positioning of the bolt (16), and the tension shaft mechanism (904) is driven by the vertical drive mechanism (905), the second longitudinal drive mechanism (12) and the transverse drive mechanism (10) to achieve vertical, longitudinal and transverse three-coordinate precise positioning.

5. The self-tightening sleeper bolt operation device according to claim 4, characterized in that: The sensor module (913) is installed in front of the tensioning shaft mechanism (904) along the working direction, and the image acquisition module (912) is installed behind the tensioning shaft mechanism (904) along the working direction. Both the image acquisition module (912) and the sensor module (913) maintain a set distance from the tensioning shaft mechanism (904).

6. The self-tightening sleeper bolt operating device according to any one of claims 1 to 5, characterized in that: The movable frame (11) is located between two sets of wheel pairs (6) of the working vehicle (100), and the lateral width of the movable frame (11) is greater than the lateral width of the main frame (17); the working device (9) is symmetrically arranged on the left and right inner sides of the movable frame (11) in the lateral direction, and is located on the left and right outer sides of the main frame (17) in the lateral direction.

7. The self-tightening sleeper bolt operation device according to claim 6, characterized in that: The operating device (9) comprises two tensioning shaft mechanisms (904) arranged side by side in the transverse direction, and the installation positions of the two tensioning shaft mechanisms (904) correspond to the positions of two bolts (16) of the same fastener (15).

8. A method for operating self-tightening rail sleeper bolts based on the device according to any one of claims 1 to 7, characterized in that: The operation method comprises the following steps: S10) When the working vehicle (100) is moving, the rail clamping mechanism (8) clamps the steel rail (13), and then the first longitudinal driving mechanism (5) drives the vehicle frame (3) to move forward, and the sensor module (913) detects the bolt (16) at the same time; when the bolt (16) is detected, the first longitudinal driving mechanism (5) stops pushing the vehicle frame (3), and the rail clamping mechanism (8) is loosened from the steel rail (13); S20) the image acquisition module (912) starts taking pictures and acquiring the position of the bolt (16), and drives the tension shaft mechanism (904) to adjust the position along the rail direction through the second longitudinal drive mechanism (12), and drives the tension shaft mechanism (904) to adjust the position along the horizontal direction through the horizontal drive mechanism (10); S30) when the tensioning shaft mechanism (904) reaches a specified position, the vertical drive mechanism (905) presses down a set distance so that the tensioning shaft mechanism (904) is sleeved on the bolt (16), and drives the tensioning shaft mechanism (904) to tighten or loosen the bolt (16); S40) After the operation is completed, the vertical drive mechanism (905) releases pressure and resets, the second longitudinal drive mechanism (12) and the transverse drive mechanism (10) drive the tension shaft mechanism (904) to reset, and the operation vehicle (100) continues to perform the traveling operation; S50) If the bolt (16) is not detected, after the vehicle frame (3) travels a set distance, the rail clamping mechanism (8) is loosened from the rail (13), and the movable frame (11) is driven forward by the first longitudinal drive mechanism (5), and the working vehicle (100) continues to perform the traveling operation.

9. The method for operating the self-tightening sleeper bolt operating device according to claim 8, characterized in that: In the step S10), the movable frame (11) is driven by the first longitudinal drive mechanism (5) to make the tension shaft mechanism (904) reach the initial position; in the step S20), the tension shaft mechanism (904) is driven by the vertical drive mechanism (905), the second longitudinal drive mechanism (12) and the transverse drive mechanism (10) to achieve vertical, longitudinal and transverse three-coordinate precise positioning.

10. The operating method of the self-tightening sleeper bolt operating device according to claim 9, characterized in that: In the step S40), after the tensioning shaft mechanism (904) completes an operation, the rail clamping mechanism (8) clamps the steel rail (13), and then the first longitudinal drive mechanism (5) drives the vehicle frame (3) to move forward; when the vehicle frame (3) reaches a predetermined position, the rail clamping mechanism (8) is released from the steel rail (13), and then the first longitudinal drive mechanism (5) drives the movable frame (11) to move forward, and the working vehicle (100) continues to perform the traveling operation.

11. The method for operating the self-tightening sleeper bolt operating device according to claim 8, 9 or 10, characterized in that: In the step S10), when the driving module (801) contracts inwards, it drives the connecting rod (803) to move, thereby driving the guide rod (804) to move outwards, and the guide rod (804) pushes the rocker arm (805) outwards and causes it to rotate, so that the rail clamping block (807) connected to the rocker arm (805) clamps the rail (13); when the driving module (801) extends outwards, it drives the connecting rod (803) to move, thereby pulling the guide rod (804) to move inwards, and the rocker arm (805) is lifted upwards under the pulling force of the elastic member (806), so that the rail clamping block (807) is loosened from the rail (13).

Images