Railway track trolley

Abstract

The invention relates to a railway track trolley which is characterized in that a trolley body is formed by connecting a left trolley body and a right trolley body through a quick-release locking mechanism; the walking part is composed of a left walking unit and a right walking unit, and each walking unit comprises a wheel frame and two walking wheels. The two groups of walking units are respectively connected below the left vehicle body and the right vehicle body; the handle comprises a U-shaped bent rod, two front supporting rods and two rear supporting rods. The ends of vertical rods at the two ends of the U-shaped bent rod are fixedly connected with the upper ends of the two front supporting rods through adapter sleeves and lock pins respectively, and the middles of the two front supporting rods are fixedly connected with the upper ends of the two rear supporting rods through transition sleeves and screws respectively. The lower end elbows of the two front supporting rods are fixedly connected with the locking supporting blocks on the upper portions of the front ends of the wheel frames on the corresponding sides in an inserted mode respectively, and the lower end elbows of the two rear supporting rods are fixedly connected with the locking supporting blocks on the upper portions of the rear ends of the wheel frames on the corresponding sides in an inserted mode respectively. The lateral fixed limiting mechanism and the lateral elastic limiting mechanism are connected with the right trolley body and the left trolley body correspondingly, and lateral limiting of the trolley on the track is achieved. The small rail car has the advantages of being fast to assemble and disassemble.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical devices, and particularly relates to a railway track trolley. Background Art

[0002] In the field of railway track detection technology, railway track trolleys are important carrier tools. After operators install detection equipment on the railway track trolley, they push the trolley on the railway track to complete the detection operation. Since the location of railway tracks is often inconvenient for motor vehicle operation, railway track trolleys need to be carried to the detection location by operators. Currently, some railway track trolleys are not easy to disassemble and need to be carried as a whole by operators. Such railway track trolleys have the disadvantages of being inconvenient for storage, transportation, and handling. There is also a type of railway track trolley that can be disassembled into several parts for the convenience of storage, transportation, and handling. Then, they are respectively placed in turnover boxes and carried to the site by operators. After that, each part is fastened together with screws to form a whole machine for further detection operation. Although this type of railway track trolley is convenient for storage, transportation, and handling, it is not easy to install, which greatly reduces the on-site operation efficiency. To solve the above problems, it is an urgent need to develop a railway track trolley that combines the characteristics of being easy to store, transport, handle, disassemble, and install. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a railway track trolley that can be quickly assembled and disassembled, thereby facilitating storage, transportation, handling, and improving the on-site operation efficiency.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A railway track trolley includes a handle, a vehicle body, a traveling part, a lateral fixed limiting mechanism, and a lateral elastic limiting mechanism;

[0006] The vehicle body is composed of a left vehicle body and a right vehicle body connected by a quick-release locking mechanism;

[0007] The traveling part is composed of two sets of traveling units arranged left and right. Both sets of traveling units include a wheel frame and two traveling wheels installed at the front and rear ends of the lower part of the wheel frame. The left part of the left vehicle body is fixedly connected to the middle of the wheel frame of the left traveling unit, and the right part of the right vehicle body is fixedly connected to the middle of the wheel frame of the right traveling unit;

[0008] The handle includes a U-shaped bent rod, two front support rods and two rear support rods; the ends of the vertical rods at both ends of the U-shaped bent rod are fixedly connected to the upper ends of the two front support rods respectively through adapter sleeves and locking pins, and the middle parts of the two front support rods are fixedly connected to the upper ends of the two rear support rods respectively through transition sleeves and screws; the lower bent ends of the two front support rods are respectively inserted and fixedly connected to the locking support blocks at the upper parts of the front ends of the wheel frames on the corresponding sides, and the lower bent ends of the two rear support rods are respectively inserted and fixedly connected to the locking support blocks at the upper parts of the rear ends of the wheel frames on the corresponding sides;

[0009] The lateral fixed limiting mechanism and the lateral elastic limiting mechanism are respectively fixedly connected to the right vehicle body and the left vehicle body; both the lateral fixed limiting mechanism and the lateral elastic limiting mechanism include two limiting wheels arranged at the front and rear positions in the lower part; the lateral fixed limiting mechanism is in rolling contact with the inner side surface of one side track through its two limiting wheels, and the lateral elastic limiting mechanism is in rolling contact with the inner side surface of the other side track through its two limiting wheels, so as to realize the lateral limiting of the trolley on the track.

[0010] Moreover, the quick-release locking mechanism includes a left locking part and a right locking part; the left locking part is embedded at a position near the right end of the left vehicle body and is fixed to the left vehicle body; the right locking part is embedded at a position near the left end of the right vehicle body and is fixed to the right vehicle body;

[0011] The left locking part includes a crank, a flange chute, a mounting body, a slide rod, a connecting rod, a locking spring and a cover; the mounting body is in the shape of a rectangular box, and the mounting body is provided with three vertically penetrating holes in the up-down direction, and three horizontal holes are arranged on the right side of the mounting body, and the three horizontal holes are respectively perpendicular to and intersect with the three vertically penetrating holes; the connecting rod is inserted into the middle vertically penetrating hole, and the lower end of the connecting rod is embedded into the eccentric groove arranged at the head of the crank, and the two are connected by screws, and the crank can rotate around the screw, and the head of the crank is in contact and cooperation with the lower end surface of the mounting body; the two slide rods are inserted into the two vertically penetrating holes on both sides, and the upper ends of the two slide rods and the upper end of the connecting rod are vertically inserted and fastened with screws to realize the fixed connection of the three; the lower parts of the two slide rods are integrally provided with tapered surfaces that are small at the top and large at the bottom and are fixed with sleeves having tapered surfaces; covers are respectively fixed at the positions of the bottom of the mounting body corresponding to the two vertically penetrating holes on both sides, and locking springs are pressed on the upper ends of the two covers;

[0012] The right locking part includes two locking rods and a mounting plate, and the two locking rods are inserted and fixed in two rod holes on the mounting plate; annular grooves are arranged at the left ends of the two locking rods, and the two annular grooves are in tapered surface fit with the lower ends of the two slide rods for realizing the locking connection between the left locking part and the right locking part.

[0013] Moreover, the lateral fixed limit mechanism further includes a fixed seat, screw rod I, locking nut, linear bearing group, crank arm, and connecting plate; the screw rod I is a rod structure with a polished rod guiding section in the middle and threads at both ends; the front and rear ends of the connecting plate are respectively fixedly connected to a crank arm, the upper ends of the two crank arms are respectively fixed with a linear bearing group, the two linear bearing groups are respectively sleeved and guidingly matched with the middle of a screw rod I, and locking nuts are respectively connected to the outer ends of the two screw rod I outside the two linear bearing groups; fixed seats are respectively installed at both ends of the two screw rod I, the fixed seats at both ends of one screw rod I are fixedly connected to the front side of the right vehicle body, the fixed seats at both ends of the other screw rod I are fixedly connected to the rear side of the right vehicle body, and limit wheels are rotatably installed at the lower ends of the two crank arms, and rolling contact is formed between the two limit wheels and the inner side surface of one track.

[0014] Moreover, the lateral elastic limit mechanism includes a fixed seat, screw rod II, spring I, spring II, locking nut, linear bearing group, crank arm, limit wheel, and connecting plate; the screw rod II is a rod structure with a polished rod guiding section in the middle and threads at both ends; the front and rear ends of the connecting plate are respectively fixedly connected to a crank arm, the upper ends of the two crank arms are respectively fixed with a linear bearing group, the two linear bearing groups are respectively sleeved and guidingly matched with the middle of a screw rod II, spring I and spring II are respectively sleeved on the outer ends of the two screw rod II outside the two linear bearing groups, and locking nuts are respectively fixed on the two screw rod II outside spring I and spring II to achieve elastic compression of spring I and spring II; fixed seats are respectively installed at both ends of the two screw rod II, the fixed seats at both ends of one screw rod II are fixedly connected to the front side of the left vehicle body by screws, the fixed seats at both ends of the other screw rod II are fixedly connected to the rear side of the left vehicle body by screws; limit wheels are rotatably installed at the lower ends of the two crank arms, and rolling contact is formed between the two limit wheels and the inner side surface of the other track.

[0015] The advantages and positive effects of the present invention are as follows:

[0016] 1. For the railway track trolley of the present invention, the handle is modularly designed, and the handle and the traveling part are connected and fixed by lock nails, so that the quick installation and disassembly of the handle and the vehicle body can be realized.

[0017] 2. For the railway track trolley of the present invention, the vehicle body is modularly designed, and the vehicle body is divided into a left vehicle body and a right vehicle body. After the handle is disassembled from the vehicle body, the quick installation and disassembly of the left vehicle body and the right vehicle body can be realized through the locking mechanism. During storage and handling, the whole machine can be disassembled into modules, effectively reducing the storage volume and the handling difficulty; during the inspection operation, each module can be quickly installed, effectively reducing the installation and assembly time of the whole machine and improving the on-site operation efficiency.

[0018] 3. A railway track trolley of the present invention is internally provided with a locking mechanism. The locking mechanism is divided into a left locking part and a right locking part, which are respectively fixedly connected to the left vehicle body and the right vehicle body. The rapid installation and disassembly of the left vehicle body and the right vehicle body are realized through the locking mechanism.

[0019] Figure Explanation

[0020] Figure 1 It is a schematic diagram of the overall structural composition of the present invention;

[0021] Figure 2 It is a schematic diagram of the handle structural composition of the present invention;

[0022] Figure 3 It is a schematic diagram of the vehicle body structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the vehicle body composition structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the locking mechanism structural composition of the present invention;

[0025] Figure 6 It is a schematic diagram of the left locking part structural composition of the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structural composition of the left locking part of the present invention;

[0027] Figure 8 It is a schematic diagram of the right locking part structural composition of the present invention;

[0028] Figure 9 It is an internal perspective view of the locking mechanism of the present invention in the locked state;

[0029] Figure 10 It is an internal front view of the locking mechanism of the present invention in the locked state;

[0030] Figure 11 It is an internal perspective view of the locking mechanism of the present invention in the non-locked state;

[0031] Figure 12 It is an internal front view of the locking mechanism of the present invention in the non-locked state;

[0032] Figure 13 It is a schematic diagram of the crank state of the locking mechanism of the present invention in the locked state;

[0033] Figure 14 It is a schematic diagram of the crank state of the locking mechanism of the present invention in the non-locked state;

[0034] Figure 15 It is a schematic diagram of the walking part structural composition of the present invention;

[0035] Figure 16 Schematic diagram of the structural composition of the lateral fixed limit mechanism of the present invention

[0036] Figure 17 Schematic diagram of the structural composition of the lateral elastic limit mechanism of the present invention

[0037] Figure 18 Schematic diagram of the structure of screw I of the present invention

[0038] Figure 19 Schematic diagram of the structure of screw II of the present invention. Specific embodiments

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the drawings

[0040] A railway track trolley, please refer to Figures 1-19 , and its inventive points are as follows: It includes a handle 1, a vehicle body 2, a traveling part 3, a lateral fixed limit mechanism 4, and a lateral elastic limit mechanism 5. The handle 1 is fixed to the traveling part 3 by a quick lock method, the traveling part 3 is fixed to the vehicle body 2 by screws, the lateral fixed limit mechanism 4 is fixed to the vehicle body 2 by screws, and the lateral elastic limit mechanism 5 is fixed to the vehicle body 2 by screws. The vehicle body is used to realize the integration of the handle, the traveling part, the lateral fixed limit mechanism, and the lateral elastic limit mechanism. The traveling part is used to realize the traveling of the trolley on the railway track. The handle is used for handholding to push the trolley to travel on the railway track. The lateral fixed limit mechanism and the lateral elastic limit mechanism are used to ensure the lateral position of the trolley when traveling on the track and prevent the trolley from deviating from the track and falling.

[0041] Refer to Figure 2 , the handle 1 includes a U-shaped bent rod 1-1, an adapter sleeve 1-2, a locking pin 1-3, a transition sleeve 1-4, a front support rod 1-5, and a rear support rod 1-6. The front support rod and the rear support rod are both L-shaped rods. The two adapter sleeves 1-2 are respectively fixed to the upper ends of the two front support rods 1-5 by screws. The end parts of the vertical rods at both ends of the U-shaped bent rod 1-1 are respectively inserted into the two adapter sleeves and fixed by locking pins, so as to achieve the connection between the two parallel front support rods 1-5 and the U-shaped bent rod 1-1. The upper ends of the two rear support rods 1-6 are respectively fixed to the lower part of a transition sleeve by screws. The middle parts of the two front support rods are respectively inserted into the inner holes of the two transition sleeves and fixed by screws, so as to achieve the connection between the two rear support rods and the two front support rods. The front support rod and the rear support rod on the same side are cooperated at a 90° angle at the upper part.

[0042] Refer to Figure 3 and Figure 4The vehicle body 2 comprises a left vehicle body 2-1, a quick-release locking mechanism 2-2, and a right vehicle body 2-3, wherein the left vehicle body 2-1 is connected to the right vehicle body 2-3 via the quick-release locking mechanism 2-2;

[0043] See also Figure 5 The quick-release locking mechanism 2-2 includes a locking left part 2-2-1 and a locking right part 2-2-2. The locking left part 2-2-1 is embedded in the left vehicle body near its right end and is fixed to the left vehicle body 2-1 by screws. The locking right part 2-2-2 is embedded in the right vehicle body near its left end and is fixed to the right vehicle body 2-3 by screws.

[0044] See also Figure 6 and Figure 7 The locking left part 2-2-1 includes a crank 2-2-1-1, a flange slide 2-2-1-2, a mounting body 2-2-1-3, a slide rod 2-2-1-4, a connecting rod 2-2-1-5, a locking action spring 2-2-1-6, and a cover 2-2-1-7. The mounting body is in the shape of a rectangular box, and three vertical through holes are arranged in the vertical direction of the mounting body. The middle vertical through hole is used to pass the connecting rod 2-2-1-5, and the two vertical through holes on both sides are used to pass the slide rod. Three horizontal holes are arranged on the right side of the mounting body, and the three horizontal holes are perpendicularly intersected with the three vertical through holes respectively. The connecting rod 2-2-1-5 is inserted into the vertical through hole in the middle, and the lower end of the connecting rod 2-2-1-5 is embedded in the eccentric groove set in the head of the crank 2-2-1-1. The two are connected by a screw. The crank 2-2-1-1 can rotate around the screw. The head of the crank 2-2-1-1 is in contact with the lower end surface of the mounting body 2-2-1-3, and the contact point is the support for the crank 2-2-1-1 when rotating. Two sliding rods are installed in the two vertical through holes on both sides, and the upper ends of the two sliding rods and the upper end of the connecting rod are vertically installed with fastening screws to achieve a fixed connection between the three.

[0045] The lower part of the two slide bars is integrally provided with a tapered surface 2-2-1-8 with a small upper part and a large lower part and a sleeve with a tapered surface. A cover is fixed at the bottom of the mounting body corresponding to the positions of the vertical through holes on both sides, and the upper ends of the two covers are pressed with locking springs 2-2-1-6.

[0046] See also Figure 8 The locking right part 2-2-1 includes two locking rods 2-2-2-1 and a mounting plate 2-2-2-2. The two locking rods are inserted into two rod holes on the mounting plate, and the flanges on the two locking rods are fixedly connected to the mounting plate by screws. The left ends of the two locking rods are provided with annular grooves, and the two annular grooves 2-2-2-3 are used to adapt to the conical surface shape of the lower ends of the two sliding rods to achieve the locking connection between the locking left part and the locking right part.

[0047] When the left locking part and the right locking part are locked and assembled, the above flange chute plays a supporting and guiding role for the two locking rods through the lower semi-circular arc plate at the end, facilitating the quick alignment of the left locking part and the right locking part.

[0048] Refer to Figure 15 , the walking part 3, which is composed of two groups of walking units arranged in parallel on the left and right sides. Each of the two groups of walking units includes a wheel frame 3-2 and two walking wheels 3-3 installed at the front and rear ends of the lower part of the wheel frame. In the middle of the upper surface of the wheel frame, there is a vehicle body embedding groove, which forms an embedding fit with the corresponding end of the vehicle body and is fixedly connected by screws. At the positions near both ends of the upper surface of the wheel frame, there are locking support blocks 3-1 protruding upward by screws. A handle insertion hole is provided on the locking support block. A locking slot is communicated with the upper part of the handle insertion hole, and screw through holes and threaded holes are relatively arranged on both sides of the locking slot. Among them, the handle insertion holes on the two locking support blocks at the front end of the two groups of walking units are inserted and matched with the elbows at the lower ends of the two front support rods, and are fixedly connected by locking pins 1-3 installed in the screw through holes and threaded holes at the corresponding locking slots. The handle insertion holes on the two locking support blocks at the rear end of the two groups of walking units are respectively inserted and matched with the elbows at the lower ends of the two rear support rods, and are fixedly connected by locking pins 1-3 installed in the screw through holes and threaded holes at the corresponding locking slots.

[0049] Refer to Figure 16 , the lateral fixed limiting mechanism 4 includes a fixed seat 4-1, a screw rod I 4-2, a locking nut 4-3, a linear bearing group 4-4, a crank arm 4-5, a limiting wheel 4-6, and a connecting plate 4-7. The screw rod I is a rod body structure with a smooth rod guiding section in the middle and threads at both ends. The front and rear ends of the connecting plate are respectively fixedly connected to a crank arm. The upper ends of the two crank arms are respectively fixedly connected to a linear bearing group. The two linear bearing groups are respectively inserted and guidedly matched with the middle of a screw rod I. Locking nuts are respectively connected to the outer ends of the two screw rods I outside the two linear bearing groups. Fixed seats are respectively installed at both ends of the two screw rods I. The fixed seats at both ends of one screw rod I are fixedly connected to the front side of the right vehicle body by screws, and the fixed seats at both ends of the other screw rod I are fixedly connected to the rear side of the right vehicle body by screws. Limiting wheels are rotatably installed at the lower ends of the two crank arms. Rolling contact is formed between the two limiting wheels and the inner side surface of one side track.

[0050] Refer to Figure 17 , the lateral elastic limiting mechanism 5 includes a fixed seat 4-1, a screw rod II 5-2, a spring I 5-1, a spring II 5-3, a locking nut 4-3, a linear bearing group 4-4, a crank arm 4-5, a limiting wheel 4-6, and a connecting plate 4-7.

[0051] The screw II is a rod structure with a polished rod guiding section in the middle and threads at both ends. The front and rear ends of the connecting plate are respectively fixedly connected to a crank arm. The upper ends of the two crank arms are respectively fixed with a linear bearing group. The two linear bearing groups are respectively sleeved and guidingly matched with the middle part of a screw II. On the two screw II, spring I and spring II are respectively sleeved at the outer ends of the two linear bearing groups. Locking nuts are respectively fixed on the two screw II outside spring I and spring II to achieve the elastic compression of spring I and spring II, thereby achieving the elastic compression of the linear bearing group. Fixed seats are respectively installed at both ends of the two screw II. The fixed seats at both ends of one screw II are fixedly connected to the front side of the left vehicle body by screws, and the fixed seats at both ends of the other screw II are fixedly connected to the rear side of the left vehicle body by screws. Limit wheels are rotatably installed at the lower ends of the two crank arms. Rolling contact is formed between the two limit wheels and the inner side surface of the other track.

[0052] The front and rear two limit wheels of the lateral fixed limit mechanism are fixed position limit wheels along the transverse direction of the track, while the front and rear two limit wheels of the lateral elastic limit mechanism are floating limit wheels that can adjust their positions left and right along the transverse direction of the track, ensuring that when the railway track trolley travels on the two tracks, with the change of the distance between the two tracks (the change amount is not large), the track trolley will not have a lateral displacement and cause unstable operation.

[0053] Refer to Figure 18 、 Figure 19 The length of the polished rod guiding section of the screw II 5-2 is longer than that of the screw I 4-2. Therefore, the linear bearing group can slide on the polished rod guiding section of the screw II 5-2.

[0054] The principle of rapid connection of the vehicle body of a railway track trolley is as follows:

[0055] Refer to Figure 9 、 Figure 10 、 Figure 13 、 Figure 14, the cooperation between the left locking part 2-2-1 and the right locking part 2-2-2 reaches the locking state of the quick-release locking mechanism 2-2, completing the connection process between the left vehicle body 2-1 and the right vehicle body 2-3. The process is as follows: At the initial position, the distance between the rotation point and the contact point of the crank 2-2-1-1 is d1. Rotate the crank 2-2-1-1. Since the distance between the rotation point and the contact point of the crank 2-2-1-1 becomes d2 and d1 < d2, the connecting rod 2-2-1-5 drives the sliding rod 2-2-1-4 to compress the locking spring 2-2-1-5 and move downward. At this time, fix the position of the crank 2-2-1-1 and make the locking rod 2-2-2-1 slide into the interior of the left locking part 2-2-1 along the flange chute 2-2-1-2 until the end face of the right vehicle body 2-3 contacts the left vehicle body 2-1. At this time, release the crank 2-2-1-1. Under the resilience of the locking spring 2-2-1-5, the sliding rod 2-2-1-4 moves upward, making the conical surface of the sliding rod 2-2-1-4 contact the groove of the locking rod 2-2-2-1. At this time, the purpose of the cooperation between the left locking part 2-2-1 and the right locking part 2-2-2 is achieved. The resilience of the locking spring 2-2-1-5 ensures the stable contact and cooperation between the left locking part 2-2-1 and the right locking part 2-2-2.

[0056] The principle of rapid disassembly of the vehicle body of a railway track trolley is as follows:

[0057] Refer to Figure 11 , Figure 12 , Figure 13 , Figure 14, the left locking part 2-2-1 can be disengaged from the right locking part 2-2-2, reaching the unlocked state of the quick-release locking mechanism 2-2, and completing the disassembly process of the left vehicle body 2-1 and the right vehicle body 2-2. The process is as follows: At the initial position, the distance between the rotation point and the contact point of the crank 2-2-1-1 is d1. Rotate the crank 2-2-1-1. Since the distance between the rotation point and the contact point of the crank 2-2-1-1 becomes d2, and d1 < d2, the connecting rod 2-2-1-5 drives the sliding rod 2-2-1-4 to compress the locking spring 2-2-1-5 and move downward. At this time, the conical surface of the sliding rod 2-2-1-4 is not in contact with the groove of the locking rod 2-2-2-1. Fix the position of the crank 2-2-1-1 and make the locking rod 2-2-2-1 slide outward along the flange chute 2-2-1-2 to the outside of the left locking part 2-2-1 until the right vehicle body 2-3 is completely separated from the left vehicle body 2-1. At this time, release the crank 2-2-1-1. Under the resilience of the locking spring 2-2-1-5, the sliding rod 2-2-1-4 moves upward to the initial position. At this time, the left locking part 2-2-1 can be disengaged from the right locking part 2-2-2, reaching the unlocked state of the quick-release locking mechanism 2-2.

[0058] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above figures and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A railway track trolley, characterized in that: It includes a handle, a vehicle body, a walking part, a lateral fixed limiting mechanism and a lateral elastic limiting mechanism; The vehicle body is composed of a left vehicle body and a right vehicle body connected by a quick-release locking mechanism; The walking part is composed of two groups of walking units arranged on the left and right, and the two groups of walking units each include a wheel frame and two walking wheels installed at the front and rear ends of the lower part of the wheel frame; the left part of the left vehicle body is fixedly connected to the middle part of the wheel frame of the left walking unit, and the right part of the right vehicle body is fixedly connected to the middle part of the wheel frame of the right walking unit; The handle comprises a U-shaped curved rod, two front support rods and two rear support rods; the ends of the vertical rods at both ends of the U-shaped curved rod are fixedly connected to the upper ends of the two front support rods through adapter sleeves and locking nails, and the middle parts of the two front support rods are fixedly connected to the upper ends of the two rear support rods through transition sleeves and screws; the lower end elbows of the two front support rods are respectively inserted and fixedly connected to the locking support blocks at the upper front end of the wheel frame on the corresponding sides, and the lower end elbows of the two rear support rods are respectively inserted and fixedly connected to the locking support blocks at the upper rear end of the wheel frame on the corresponding sides; The lateral fixed limiting mechanism and the lateral elastic limiting mechanism are fixedly connected to the right car body and the left car body respectively; the lateral fixed limiting mechanism rolls with the inner side surface of one side track through the two limiting wheels arranged at the front and rear thereof, and the lateral elastic limiting mechanism rolls with the inner side surface of the other side track through the two limiting wheels arranged at the front and rear thereof, thereby realizing the lateral limiting of the trolley on the track.

2. The railway track trolley according to claim 1, characterized in that: The quick-release locking mechanism comprises a locking left part and a locking right part; the locking left part is embedded in a position of the left vehicle body close to its right end and is fixed to the left vehicle body; the locking right part is embedded in a position of the right vehicle body close to its left end and is fixed to the right vehicle body; The locking left part comprises a crank, a flange slide groove, a mounting body, a sliding rod, a connecting rod, a locking spring, and a sealing cover; the mounting body is in the shape of a rectangular box, and the mounting body is provided with three vertical through holes in the upper and lower directions, and three horizontal holes are provided on the right side of the mounting body, and the three horizontal holes are respectively intersected perpendicularly with the three vertical through holes; the connecting rod is passed through the vertical through hole in the middle, and the lower end of the connecting rod is embedded in the eccentric groove provided on the head of the crank, and the two are connected by a screw, and the crank can rotate around the screw, and the head of the crank is in contact with the lower end surface of the mounting body; the two sliding rods are passed through the two vertical through holes on both sides, and the upper ends of the two sliding rods and the upper ends of the connecting rod are vertically penetrated with fastening screws to achieve a fixed connection between the three; the lower parts of the two sliding rods are integrally provided with a conical surface with a smaller upper part and a larger lower part, and a sleeve with a conical surface is fixed; a sealing cover is respectively fixed at the position corresponding to the vertical through holes on both sides at the bottom of the mounting body, and the upper ends of the two sealing covers are press-fitted with locking springs; The locking right part includes two locking rods and a mounting plate, and the two locking rods are passed through and fixed in two rod holes on the mounting plate; an annular groove is provided at the left end of the two locking rods, and the two annular grooves are adapted to the conical surface shape of the lower end of the two sliding rods, so as to realize the locking connection between the locking left part and the locking right part.

3. The railway track trolley according to claim 1, characterized in that: The lateral fixed limiting mechanism also includes a fixed seat, a screw rod I, a locking nut, a linear bearing group, a crank arm, and a connecting plate; the screw rod I is a rod body structure with a smooth rod guide section in the middle and threads at both ends; the front and rear ends of the connecting plate are respectively fixedly connected to a crank arm, and a linear bearing group is fixed to the upper ends of the two crank arms respectively. The two linear bearing groups are respectively matched with the middle-mounted guide of a screw rod I, and a locking nut is respectively connected to the two ends outside the two linear bearing groups on the two screw rods I; a fixed seat is respectively installed at both ends of the two screw rods I, and the fixed seats at both ends of one screw rod I are fixedly connected to the front side of the right vehicle body, and the fixed seats at both ends of the other screw rod I are fixedly connected to the rear side of the right vehicle body, and limiting wheels are rotatably installed at the lower ends of the two crank arms, and rolling contact is formed with the inner side surface of one side track through the two limiting wheels.

4. The railway track trolley according to claim 1, characterized in that: The lateral elastic limiting mechanism comprises a fixed seat, a screw rod II, a spring I, a spring II, a locking nut, a linear bearing group, a crank arm, a limiting wheel, and a connecting plate; the screw rod II is a rod body structure with a light rod guide section in the middle and threads at both ends; the front and rear ends of the connecting plate are respectively fixedly connected to a crank arm, a linear bearing group is fixed to the upper ends of the two crank arms, and the two linear bearing groups are respectively matched with the middle wear guide of a screw rod II, and springs I and spring II are respectively mounted on the two screw rods II at the two ends outside the two linear bearing groups, and locking nuts are respectively fixed on the two screw rods II outside the spring I and spring II to achieve elastic compression of spring I and spring II; a fixed seat is respectively installed at the two ends of the two screw rods II, the fixed seats at the two ends of one screw rod II are fixedly connected to the front side of the left vehicle body by screws, and the fixed seats at the two ends of the other screw II are fixedly connected to the rear side of the left vehicle body by screws; a limiting wheel is rotatably installed at the lower ends of the two crank arms, and rolling contact is formed with the inner side surface of the track on the other side through the two limiting wheels.

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