Rail transit laying device

Abstract

The invention discloses a rail transit laying device, relates to the field of rail transit construction equipment, and solves the problems of high manual dependence, low efficiency, large potential safety hazard and the like in the existing laying operation. The device comprises a hanging bracket, a self-locking mechanism, bearing clamping seats and a lifting rod, bearing inserting holes are formed in the hanging bracket for the bearing clamping seats to slide, the bearing clamping seats are symmetrically arranged and matched with reset springs, the self-locking mechanism is arranged between the two clamping seats, and the lifting rod drives the whole device to ascend and descend. The tail end of the bearing clamping base is provided with a convex circle mechanism, an inclined face and a cone pulley to be matched with a rail structure. The self-locking mechanism comprises a sliding rod, a stretching arm and other components, automatic opening and closing and self-locking can be achieved, and the self-locking mechanism is matched with a buffer spring protection component to be automatically unlocked from the rail and the gravity triggering base. The device achieves full automation of rail clamping, transferring, placing and separating, is compact in structure and stable in linkage, reduces the labor cost, improves the laying efficiency and precision and is suitable for large-scale operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit construction equipment, in particular to a rail transit laying device. BACKGROUND

[0002] Traditional rail transit track laying operation has significant operation pain points and technical defects in actual engineering construction process: on the one hand, the core track clamping, transporting and positioning placement links rely on manual operation of cranes, gantry and other large equipment throughout the process, which not only requires multiple workers to operate synchronously, greatly increasing the labor cost, but also leads to low overall laying operation efficiency, which is difficult to adapt to the batch laying demand of large-scale rail transit lines; on the other hand, the track laying process needs manual control of clamping force and positioning accuracy, which is complicated, time-consuming and labor-intensive, and the track itself is heavy and bulky, if the worker operates improperly during clamping and transporting, it may cause the track to slip, clamping instability and other problems, which not only affects the laying accuracy, but also has great construction safety hazards, seriously restricting the standardization and efficiency of rail transit laying operation. At the same time, the existing simple laying device lacks a reliable self-locking mechanism, which is easy to displace after clamping the track, and needs manual continuous assistance for fixation, which further increases the operation burden and makes it difficult to ensure the stability and consistency of the laying process. SUMMARY

[0003] In view of the above problems, the present application provides a rail transit laying device, which has the core characteristics of automatic clamping and self-locking, and does not need manual control of clamping and fixation throughout the process, which can effectively avoid manual operation errors and ensure laying accuracy and construction safety. Specifically, first, replace manual clamping operation, realize automatic clamping, transporting and placing of the track, greatly reduce labor cost, and improve batch track laying efficiency. Then, rely on the linkage design of the self-locking mechanism and each component, realize automatic self-locking after clamping the track, avoid track loosening and slipping during transportation, and realize quick unlocking of the self-locking mechanism to ensure convenient separation after laying and positioning, and improve operation continuity. Finally, the lifting rod and the bearing card seat adapted to the structure of the track are matched to accurately adapt to the positioning requirements of track laying and meet the actual construction requirements of large-scale rail transit line laying.

[0004] The technical solution adopted by this invention is as follows: a rail transit laying device includes a hanger, a self-locking mechanism, a bearing bracket, and a lifting rod; the upper part of the hanger is connected to the lifting rod, and the interior is provided with a bearing insertion hole for the bearing bracket to slide and extend; the bearing brackets are symmetrically arranged on both sides of the hanger, and a return spring is provided between them; the self-locking mechanism is arranged between the two bearing brackets to realize the automatic opening, self-locking, and unlocking of the bearing brackets; the lifting rod can drive the entire device to rise and fall, triggering the self-locking mechanism to realize the automatic clamping, placement, and separation of the rails.

[0005] The rail transit laying device uses a gantry and lifting rod to achieve overall lifting and control. It relies on symmetrically arranged bearing brackets adapted to the I-shaped structure of the rails, and incorporates return springs to achieve automatic reset of the bearing brackets. The core mechanism uses a self-locking mechanism to link the opening, locking, and unlocking of the bearing brackets, integrating automatic rail clamping, stable transport, and precise placement. The device has a compact overall structure and excellent linkage, adaptable to laying scenarios for rails of different specifications. Furthermore, through mechanical linkage, self-locking limits, and elastic reset principles, it solves the technical pain points of existing rail transit track laying operations, such as high reliance on manual operation, low laying accuracy, significant construction safety hazards, and low work efficiency.

[0006] Preferably, the self-locking mechanism includes a slide rod, a tension arm, a tension spring, an upper sliding seat, a lower sliding seat, a driven rod, and a connecting member; a tension spring connects the two tension arms, the two tension arms are respectively hinged to the rotating shafts at both ends of the connecting member, the upper sliding seat is rotatably fixed on the connecting member, one end of each of the two driven rods is hinged to the tension arm, and the other end is hinged to the lower sliding seat, and both the upper and lower sliding seats are slidably sleeved on the slide rod.

[0007] By adopting the above technical solutions, the self-locking mechanism relies on the slide rod to guide the sliding of the upper and lower sliding seats. With the hinged linkage between the tension arm and the driven rod, and in conjunction with the elastic force of the tension spring, the automatic opening and closing action of the tension arm is realized. The rotational connection between the connecting piece and the upper sliding seat, and the hinged cooperation between the driven rod and the lower sliding seat, can ensure the synchronicity and smoothness of the opening and closing action of the tension arm, thereby driving the bearing bracket to achieve synchronous extension and retraction, ensuring uniform force during rail clamping and avoiding clamping deviation.

[0008] Preferably, the tension arm head includes a tension arm plane and a tension arm arc surface; the distance between the connecting shafts is twice the radius of the rounded corner, and a self-locking mechanism can be formed when the two tension arm planes are in contact.

[0009] By adopting the above technical solution, through the optimized design of the planar and arc surfaces of the boom head, combined with the precise matching of the connecting shaft spacing, reliable self-locking and unlocking of the self-locking mechanism can be achieved. When the two boom planes are in contact, the structural limit forms a stable self-lock, which can effectively prevent the bearing bracket from loosening after clamping the rail, ensuring the stability of the transfer process. The arc surface design can reduce frictional resistance during self-locking and unlocking, ensuring that the boom opens quickly and improving the continuity of operation.

[0010] Preferably, the end of the boom is provided with a top rod for abutting against the bearing seat; the lower part of the slide rod is provided with an abutment seat for limiting the lower sliding seat; and the middle part is provided with a gravity trigger seat for triggering self-locking release under the action of gravity.

[0011] By adopting the above technical solutions, the top rod at the end of the boom can accurately abut against the bearing seat, ensuring that the opening and closing action of the boom can be synchronously transmitted to the bearing seat, driving the bearing seat to complete the telescopic clamping; the abutment seat at the bottom of the slide rod can effectively limit the downward sliding seat; the gravity trigger seat in the middle can automatically trigger the self-locking release by utilizing the gravity change during the lifting process of the device, without the need for additional manual operation, further improving the degree of automation of the operation and simplifying the operation process.

[0012] Preferably, the lower part of the bearing bracket end is a convex circular mechanism, which can be adapted to the I-shaped structure of the rail; the upper surface of the end is provided with a conical wheel, which is used for guiding support during rail transportation.

[0013] By adopting the above technical solution, the convex circular mechanism of the bearing bracket, combined with the inclined surface structure at its end, can realize the automatic clamping function of the rail, adapting to the structural characteristics of the rail. The upper two sides of the rail are chamfered. When the device is pressed down, the inclined surface at the end of the bearing bracket will first contact the chamfer on the upper surface of the rail. As the device continues to press down, the cooperation between the inclined surface and the chamfer will generate a lateral force, which will drive the two symmetrically arranged bearing brackets to open outward smoothly until the convex circular mechanism and the I-shaped structure of the rail are precisely fitted, thereby completing the automatic clamping of the rail. This not only ensures the smoothness of the clamping action, but also ensures the fit with the rail after clamping, avoiding deviation during the clamping process, and laying a stable foundation for subsequent transportation and laying operations.

[0014] Preferably, a cylinder is fixedly provided at the lower part of the hanger, a pressure sleeve is slidably provided on the cylinder, a buffer spring is abutting between the pressure sleeve and the hanger, and the slide rod passes through the hanger and the pressure sleeve.

[0015] By adopting the above technical solution, this structure can achieve two beneficial effects: First, when the device is pressed down, the pressing sleeve will abut against the upper sliding seat, and the buffer spring between the pressing sleeve and the hanger can play a key protective role. Since the self-locking of the tension arm is achieved by the contact of two planes, if the downward pressure is too large or excessive, it is easy to cause the tension arm to bend and deform, thereby damaging the self-locking mechanism. The buffer spring can buffer the excess downward stroke, avoid excessive pressure to damage the self-locking mechanism, and ensure the integrity and reliability of the mechanism operation. Second, under the elastic action of the buffer spring, the lower part of the slide rod can be flexibly abut against the upper surface of the rail, replacing rigid contact, effectively avoiding scratches, dents and other damage to the upper surface of the rail caused by excessive contact force, and ensuring the surface quality of the rail after it is laid.

[0016] The beneficial effects achieved by this invention are as follows: (1) The lifting rod drives the device to lift and lower as a whole, triggering the self-locking mechanism and the bearing seat to work together. It is combined with the gravity trigger seat in the middle of the slide rod and the elastic reset effect of the reset spring. Function: It realizes the full automation of rail clamping, transportation, placement and separation, and completes the automatic release of self-locking. No manual operation or extra duty is required throughout the process, which greatly reduces labor costs and operating burden, improves the degree of automation of operation, adapts to the needs of large-scale batch rail laying, and significantly improves the efficiency of laying operation. (2) The lower part of the hanger is equipped with a cylinder, a sliding pressing sleeve and a buffer spring, and the lower part of the slide rod is equipped with an abutment seat; it can buffer the excess stroke when the device is pressed down, realize the flexible abutment between the slide rod and the upper surface of the rail, and at the same time form an effective limit on the lower sliding seat; it can also prevent excessive pressing from causing the tension arm to bend and the self-locking mechanism to be damaged, avoid rigid contact causing scratches and dents on the rail surface, and avoid mechanism damage caused by excessive sliding of components; (3) The slide bar runs through multiple components such as the hanger, the lower pressure sleeve, the upper sliding seat, and the lower sliding seat. It has the functions of limiting, buffering and gravity triggering. At the same time, it works in conjunction with the lower pressure sleeve and the buffer spring, relying on its own weight and the effect of the gravity trigger seat in the middle. The slide bar plays a precise limiting role for each component of the self-locking mechanism, ensuring that the components of the self-locking mechanism are linked smoothly and the position is accurate, and ensuring that the self-locking mechanism can stably complete the self-locking action. First, it provides sliding support and installation foundation for the lower pressure sleeve, and works in conjunction with the lower pressure sleeve and the buffer spring to achieve the buffering effect when the device is pressed down. Second, it automatically completes the unlocking action of the self-locking mechanism by relying on its own weight and the synergistic effect of the gravity trigger seat. The slide bar has multiple functions and does not require additional limit rods, buffer support components and unlocking drive components. It further simplifies the device structure and reduces manufacturing costs. At the same time, it improves the synchronization and reliability of the self-locking, buffering and unlocking actions, ensures smooth connection of each process, and further optimizes the stability of device operation. (4) The bearing bracket adopts a convex circular mechanism with an end bevel design, which is compatible with the chamfered sides and I-shaped structure of the upper part of the rail; the head of the self-locking mechanism has a flat surface and an arc surface, and the distance between the connecting shafts is precisely matched with the radius of the arc surface; thus realizing the automatic and smooth clamping of the rail and ensuring a tight fit after clamping. The overall structure of the device is compact. The self-locking mechanism is linked by the sliding rod, the arm, the driven rod, the connecting part and the tension spring, and works with the reset spring to realize the automatic reset of the bearing bracket, forming a complete linkage self-locking reset system. When the two arm planes are in contact, a stable mechanical self-lock is formed by the structural limit; the arc surface design of the arm head can reduce the frictional resistance during self-locking and unlocking, ensuring that the arm opens quickly and smoothly, improving the continuity of operation, and reducing component wear. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an overall rail transit laying device proposed in this invention.

[0018] Figure 2 This is a schematic diagram of the main components of a rail transit laying device proposed in this invention.

[0019] Figure 3 This is a schematic diagram of the cooperation between the self-locking mechanism and the bearing bracket of a rail transit laying device proposed in this invention.

[0020] Figure 4 This is an exploded view of the rail transit laying device hanger and bearing bracket proposed in this invention.

[0021] Figure 5 This is a schematic diagram of a self-locking mechanism for a rail transit laying device proposed in this invention.

[0022] Figure 6 This is an exploded view of the connecting component and tension arm of a rail transit laying device proposed in this invention.

[0023] Figure 7 This is an exploded view of the self-locking mechanism of a rail transit laying device proposed in this invention.

[0024] Figure 8 This is a schematic diagram of the coordination between the tension spring and the tension arm in a rail transit laying device proposed in this invention.

[0025] Figure 9 This is an exploded view of the buffer spring, pressure sleeve, and hanger of a rail transit laying device proposed in this invention.

[0026] In the attached diagram, the meanings of the various markings are as follows: 1. Hanger, 2. Self-locking mechanism, 3. Rail, 4. Bearing seat, 41. Conical wheel, 5. Return spring, 6. Slide rod, 7. Lifting rod, 8. Tension spring, 9. Tension arm, 10. Lower sliding seat, 11. Upper sliding seat, 12. Driven rod, 13. Connecting piece, 14. Lower pressure sleeve, 15. Buffer spring, 16. Cylinder, 61. Abutment seat, 62. Gravity trigger seat, 101. Bearing insertion hole, 91. Spring mounting seat, 92. Top rod, 93. Tension arm plane, 94. Tension arm arc surface, 95. Driven rod mounting hole, 81. Rotating spring seat. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Please see Figures 1-9 As shown: This invention discloses a rail transit laying device, including a hanger 1, a self-locking mechanism 2, a bearing bracket 4, and a lifting rod 7. These components work together to automate the clamping, transporting, placement, and separation of rails 3, requiring no manual intervention throughout the process. The upper part of the hanger 1 is fixedly connected to the lifting rod 7, which drives the entire device to rise and fall synchronously, enabling precise control of the clamping, transporting, and placement positions of the rails 3. The hanger 1 has a bearing insertion hole 101 inside, which allows the bearing bracket 4 to slide and extend, providing a stable guide and installation foundation for the bearing bracket 4. The bearing brackets 4 are symmetrically arranged on both sides of the hanger 1, and each abuts against a return spring 5, which automatically resets the bearing bracket 4 after clamping. The self-locking mechanism 2 is located between the two bearing brackets 4 and is the core component for automatically opening, locking, and unlocking the bearing brackets 4. Combined with the lifting action of the lifting rod 7, it triggers the entire device to complete each process operation.

[0029] The bearing bracket 4 is the core actuator for clamping the rail 3. Its end is provided with a convex circular mechanism, which is precisely adapted to the I-shaped structure of the rail 3, increasing the contact area during clamping and ensuring a tight fit without deviation after clamping. The end of the bearing bracket 4 is integrally formed with a beveled structure, which is located at the lower part of the bearing bracket and smoothly connected with the convex circular mechanism, providing a structural basis for automatic clamping. The upper surface of the end of the bearing bracket 4 is rotatably provided with a conical wheel 41, which can rotate flexibly and plays a guiding and supporting role in the transportation and positioning of the rail 3, reducing friction between the rail 3 and the bearing bracket 4, and facilitating the laying and transportation of the rail 3.

[0030] The automatic clamping action of the bearing bracket 4 is achieved by precisely matching its own structural design with the shape of the rail 3: the upper two sides of the rail 3 are chamfered. When the hanger 1 moves downward under the action of the lifting rod 7 until the end of the bearing bracket 4 is close to the rail 3, the inclined surface mechanism at the end of the bearing bracket 4 will first contact the chamfer on the upper surface of the rail 3. As the device continues to press down, the cooperation between the inclined surface and the chamfer will generate a lateral force. This force overcomes the elastic force of the return spring 5 and drives the two symmetrically arranged bearing brackets 4 to open smoothly outward along the bearing insertion hole 101 of the hanger 1. As the pressing action continues, the convex round mechanism at the end of the bearing brackets 4 on both sides will be smoothly locked in the I-shaped groove of the rail 3, completing the automatic clamping of the rail 3.

[0031] The self-locking mechanism 2 is the core of the device's linkage control, including a slide bar 6, a tension arm 9, a tension spring 8, an upper sliding seat 11, a lower sliding seat 10, a driven rod 12, and a connecting piece 13, forming a complete linkage self-locking system. Both of the two extension arms 9 are provided with spring mounting seats 91 in the middle. The tension spring 8 is fixed with rotating spring seats 81 at both ends, which are rotatably connected to the spring mounting seats 91 of the two extension arms 9, providing a stable elastic driving force for the opening and closing action of the extension arms 9. The two extension arms 9 are respectively hinged to the rotating shafts at both ends of the connector 13. The upper sliding seat 11 is rotatably fixed on the connector 13, so that the connector 13 can rotate flexibly relative to the upper sliding seat 11, ensuring the smoothness of the linkage action. Both of the two extension arms 9 are provided with driven rod mounting holes 95 at the bottom. One end of the driven rod 12 is hinged to the extension arm 9 through the driven rod mounting hole 95, and the other end is hinged to the lower sliding seat 10. The upper sliding seat 11 and the lower sliding seat 10 are slidably sleeved on the slide rod 6. The slide rod 6 provides precise sliding guidance for the two, ensuring that the opening and closing action of the extension arms 9 is synchronized.

[0032] To ensure stable linkage and protection in conjunction with the self-locking mechanism 2, a cylinder 16 is fixedly installed at the lower part of the hanger 1. A pressing sleeve 14 is slidably installed inside the cylinder 16, and the pressing sleeve 14 can slide flexibly along the inner wall of the cylinder 16. A buffer spring 15 abuts against the pressing sleeve 14 and the hanger 1. The buffer spring 15 is sleeved on the inner side of the cylinder 16 to provide elastic buffering force for the pressing sleeve 14. The sliding rod 6 passes through the hanger 1 and the pressing sleeve 14, which not only achieves its own precise positioning, but also provides stable guidance for the sliding of the pressing sleeve 14, ensuring that the pressing action is synchronized with the self-locking mechanism 2.

[0033] The end of the extension arm 9 is fixedly provided with a top rod 92, which precisely abuts against the inner side of the bearing seat 4. This allows the opening and closing action of the extension arm 9 to be synchronously transmitted to the bearing seat 4, achieving synchronized action between the two: when the extension arm 9 opens outward, the top rod 92 simultaneously pushes the bearing seat 4 outward, causing the bearing seat 4 to extend outward along the bearing insertion hole 101 of the hanger 1; when the extension arm 9 closes inward, the top rod 92 tightens inward, and the bearing seat 4 clamps inward under the action of the return spring 5, ensuring that the extension and retraction action of the bearing seat 4 is precisely matched with the opening and closing action of the extension arm 9, thus ensuring the stability of clamping and separation.

[0034] The lower part of the slide rod 6 is fixedly provided with an abutment seat 61, the core function of which is only to limit the downward displacement of the lower sliding seat 10 along the slide rod 6, clearly defining the lowest sliding position of the lower sliding seat 10, and providing a limiting basis for the linkage action of the self-locking mechanism 2. When the hanger 1 is pressed down, the lower pressing sleeve 14 moves down synchronously and applies a downward force to the upper sliding seat 11, pushing the upper sliding seat 11 to slide down along the slide rod 6, thereby driving the connecting piece 13 to move down synchronously, and pulling the two tension arms 9 to rotate synchronously around the rotating shafts at both ends of the connecting piece 13; at this time, the abutment seat 61 at the lower part of the slide rod 6 forms a rigid limit on the lower sliding seat 10, so that the lower sliding seat 10 can no longer move down along the slide rod 6. The lower part of the tension arm 9 is hinged to the lower sliding seat 10 through the driven rod 12. Under the combined action of the traction of the connecting piece 13 and the limiting of the lower sliding seat 10, the two tension arms 9 are driven to synchronously complete the opening action.

[0035] The head of the boom 9 includes a boom plane 93 and a boom arc surface 94, which are integrally formed. Combined with the precise design of the pivot spacing of the connector 13, smooth switching between self-locking and unlocking is achieved. The pivot spacing at both ends of the connector 13 is strictly set to twice the radius of the rounded corner of the boom arc surface 94. This dimensional matching design is the core prerequisite for the reliable self-locking of the mechanism. As the boom 9 continues to open outward, the boom arc surfaces 94 of the two boom heads slide against each other, effectively reducing the frictional resistance during the opening and closing process, until the two booms 9 are fully extended to a horizontal state and the two boom planes 93 are completely in contact. At this time, under the elastic tension of the tension spring 8, a stable mechanical self-locking state is formed by utilizing the limiting characteristics of the structure itself, firmly maintaining the horizontal opening posture of the boom 9. At this time, the bearing seats 4 on both sides also open to their maximum stroke simultaneously, preparing for subsequent separation from the rail 3. Then, the lifting rod 7 drives the hanger 1 to rise, and the bearing seats 4 on both sides that have opened smoothly separate from the rail 3.

[0036] The buffer spring 15, which abuts against the lowering sleeve 14 and the hanger 1, serves both as a buffer and a protective function for the self-locking mechanism 2 and for the rail 3. Specifically, when the device presses down, the lowering sleeve 14 moves down synchronously with the device until it precisely abuts against the upper sliding seat 11. As the device continues to press down, the buffer spring 15 is gradually compressed, effectively buffering excessive downward stroke. Since the self-locking of the tension arm 9 is achieved by the contact of the two tension arm planes 93, if the downward stroke is too large or excessive pressure is applied, This can easily cause the tension arm 9 to bend and deform, which in turn damages the self-locking mechanism 2. The buffer spring 15 can effectively offset the excessive downward stroke, avoid excessive downward pressure to damage the self-locking mechanism 2, and ensure the integrity and reliability of the mechanism operation. Secondly, under the elastic buffering effect of the buffer spring 15, the lower part of the slide rod 6 can be flexibly pressed against the upper surface of the rail 3, replacing rigid contact, effectively avoiding scratches, dents and other damage to the upper surface of the rail 3 caused by excessive contact force, and effectively ensuring the surface quality of the rail 3 after it is laid.

[0037] The slide rod 6 is fixed with a gravity trigger seat 62 between the lower sliding seat 10 and the upper sliding seat 11 to realize the automatic unlocking of the self-locking mechanism 2. When the lifting rod 7 drives the hanger 1 to continue to rise, the bearing bracket 4 has completely separated from the rail 3 and the device has separated from the rail 3. As the hanger 1 continues to rise, the slide rod 6 moves downward relative to the hanger 1 under the combined action of its own weight and the weight of the middle gravity trigger seat 62. The gravity trigger seat 62 pushes the lower sliding seat 10 to move downward along the slide rod 6. The lower sliding seat 10 pulls the tension arm 9 to rotate in the opposite direction around the pivot of the connecting member 13 through the driven rod 12. The tension arm 9, which was originally in a horizontal self-locking state, is pushed, and the tension arm planes 93 of the two tension arm heads separate from each other, and the self-locking state is released. After the self-locking is released, the tension spring 8 between the arms 9 releases its elastic potential energy, pulling the two arms 9 inward to retract and reset. The top rod 92 at the end of the arms 9 no longer applies an outward pushing force to the bearing bracket 4. At this time, under the elastic action of the reset spring 5, the bearing bracket 4 retracts inward along the bearing insertion hole 101 of the hanger 1, returning to the initial retracted state, and is ready for the next operation.

[0038] The specific operating procedure of this device is as follows: First, connect the device to equipment such as a crane via the lifting rod 7, adjust the height of the lifting rod 7 so that the entire device is in the ready-to-work position. At this time, the bearing seat 4 is in the initial retracted state under the action of the return spring 5, and the tension arm 9 of the self-locking mechanism 2 is in the retracted and reset state. Then, control the lifting rod 7 to move the entire device downward so that the end of the bearing seat 4 is close to the rail 3 to be clamped. The inclined surface mechanism at the end of the bearing seat 4 contacts the upper chamfer of the rail 3 and opens under the lateral force. The convex round mechanism is inserted into the I-shaped groove of the rail 3, completing the automatic clamping of the rail 3.

[0039] After clamping, control the lifting rod 7 to drive the device to rise and transfer the rail 3 to the preset laying position; after reaching the position, control the lifting rod 7 to drive the entire device to move downward and place the rail 3 stably on the laying foundation; then control the hanger 1 to press down, driving the cylinder 16 and the lowering sleeve 14 to move down synchronously, the buffer spring 15 to compress synchronously and play a buffering and protective role, the lowering sleeve 14 abuts against the upper sliding seat 11, because the abutment seat 61 at the lower part of the slide rod 6 limits the lower sliding seat 10, the upper sliding seat 11 slides down along the slide rod 6, driving the tension arm 9 to extend, the arc surface 94 of the tension arm slides to fit the tension arm 9 to a horizontal state, the two tension arm planes 93 fit together, and form a self-locking under the action of the tension spring 8; at the same time, the top rod 92 pushes the bearing bracket 4 to open to the maximum, disengaging from the groove of the rail 3.

[0040] Finally, the control hanger 1 rises, causing the entire device to completely separate from the rail 3; the slide bar 6 moves downward relative to the hanger 1 under its own weight and the gravity trigger seat 62, pushing the lower slide seat 10 to move downward along the slide bar 6, releasing the self-locking state of the tension arm 9, the tension spring 8 pulls the tension arm 9 to retract inward and reset, the top rod 92 removes the thrust on the bearing bracket 4, and the bearing bracket 4 retracts inward under the action of the reset spring 5, returning to the initial state, completing one rail 3 laying operation; repeating the above operation can realize the automated laying of a batch of rails 3, greatly improving work efficiency and safety.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the figures shown are only one embodiment of the present invention. The actual structure is not limited to this.

Claims

1. A rail transit laying device, characterized in that, The device includes a hanger (1), a self-locking mechanism (2), a bearing seat (4), and a lifting rod (7). The upper part of the hanger (1) is connected to the lifting rod (7), and a bearing insertion hole (101) is provided inside for the bearing seat (4) to slide. The bearing seat (4) is symmetrically arranged on both sides of the hanger (1), and a return spring (5) is provided between the bearing seat (4) and the hanger (1). The self-locking mechanism (2) is located between the two bearing seats (4) and is used to realize the automatic opening, self-locking and unlocking of the bearing seat (4). The lifting rod (7) can drive the device to rise and fall as a whole and trigger the action of the self-locking mechanism (2), thereby realizing the automatic clamping, placement and separation of the rail (3).

2. The rail transit laying device according to claim 1, characterized in that, The self-locking mechanism (2) includes a slide rod (6), a tension arm (9), a tension spring (8), an upper sliding seat (11), a lower sliding seat (10), a driven rod (12), and a connecting member (13); a tension spring (8) is connected between the two tension arms (9), and the two tension arms (9) are respectively hinged to the rotating shafts (131) at both ends of the connecting member (13); the upper sliding seat (11) is rotatably fixed on the connecting member (13); one end of the two driven rods (12) is respectively hinged to the tension arm (9) on the corresponding side, and the other end is hinged to the lower sliding seat (10); the upper sliding seat (11) and the lower sliding seat (10) can slide up and down along the slide rod (6).

3. A rail transit laying device according to claim 2, characterized in that, The lower part of the hanger (1) is fixedly provided with a cylinder (16), and a pressure sleeve (14) is slidably assembled inside the cylinder (16). A buffer spring abuts between the pressure sleeve (14) and the hanger (1); the slide rod (6) is slidably inserted through the hanger (1) and the pressure sleeve (14).

4. A rail transit laying device according to claim 2, characterized in that, The head of the arm (9) is integrally formed with an arm plane (93) and an arm arc surface (94); the distance between the rotating shafts (131) at both ends of the connector (13) is set to twice the radius of the arm arc surface (94). When the arm planes (93) of the two arms (9) are in contact with each other, a stable mechanical self-locking can be formed under the action of the tension spring (8).

5. A rail transit laying device according to claim 2, characterized in that, The end of the extension arm (9) is fixedly provided with a top rod (92), which is used to abut against the inner side of the bearing seat (4) to synchronously transmit the opening and closing action of the extension arm (9) to the bearing seat (4).

6. A rail transit laying device according to claim 3, characterized in that, The lower part of the slide bar (6) is fixedly provided with an abutment seat (61), which is used to limit the lower slide seat (10).

7. A rail transit laying device according to claim 2, characterized in that, A gravity trigger seat (62) is fixedly provided on the slide rod (6) between the upper sliding seat (11) and the lower sliding seat (10). The gravity trigger seat (62) is used to trigger the self-locking mechanism (2) to release the self-locking mechanism by means of its own gravity during the lifting and lowering process of the device.

8. A rail transit laying device according to claim 1, characterized in that, The end of the bearing card (4) is provided with a convex circular mechanism and an inclined surface structure. The inclined surface structure is located at the lower part of the end of the bearing card (4) and is smoothly connected to the convex circular mechanism. A conical wheel (41) is rotatably provided on the upper surface of the end of the bearing card (4).

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