Adjustable subway track-laying vehicle door frame structure

Abstract

The utility model relates to the technical field of door frame technology, in particular to an adjustable subway track laying door frame structure which comprises a main beam plate, auxiliary supporting frames are rotationally installed at the two ends of the lower surface of the main beam plate through hinged supports, and driving oil cylinders for pushing the auxiliary supporting frames to rotate are arranged in the middles of the auxiliary supporting frames. One end of the sliding top block is inserted into an inner cavity of the limiting sliding groove and is in sliding connection with the limiting sliding groove; the anti-deflection blocking frame is fixedly connected with the main beam plate through a steel plate, and a fixing shaft is fixedly arranged on the anti-deflection blocking frame. The device has the beneficial effects that the rotatable auxiliary supporting frames are arranged at the two ends of the main beam plate, one side of each auxiliary supporting frame is provided with an inner cavity which is fixed to the main beam plate, and one end of each rotary clamping block can be buckled into the corresponding limiting sliding groove, so that the stability of the positions of the auxiliary supporting frames is achieved, and the auxiliary supporting frames are prevented from inclining; the whole portal can be supported in an auxiliary mode by arranging the auxiliary supporting frame, the position of the auxiliary supporting frame is stable when the auxiliary supporting frame is unfolded to be vertical, and therefore the position of the side vertical frame can be adjusted conveniently.

Description

Technical Field

[0001] This utility model relates to the field of gantry technology, specifically to an adjustable gantry structure for a subway track-laying vehicle. Background Technology

[0002] The tire-mounted subway track-laying vehicle mainly consists of a gantry assembly, a traveling mechanism, a lifting mechanism, a hydraulic system, an electrical system, a power supply system, and an operating platform. The overall height and span of the gantry can be adjusted according to the actual tunnel diameter.

[0003] In the prior art, Chinese utility model with publication number CN209143514U discloses a gantry structure for a tunnel track-laying crane with an adjustable lifting point center position. The gantry structure of this device mainly achieves stepless change of span by adjusting the variable span hydraulic cylinder assembly.

[0004] However, currently, because the bottom of the gantry legs is in contact with the ground, and the tires at the bottom of the legs can only roll along the length of the tunnel, not perpendicular to the tunnel length, it is quite difficult to adjust the span of the gantry. Therefore, this invention proposes an adjustable subway track-laying vehicle gantry structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable subway track-laying vehicle gantry structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable subway track-laying vehicle gantry structure, including a main beam plate, with auxiliary support frames rotatably mounted on both ends of the lower surface of the main beam plate via hinge supports, a driving cylinder for rotating the auxiliary support frame being provided in the middle of the auxiliary support frame, the upper end of the driving cylinder being rotatably connected to the main beam plate via a hinge support, a limiting groove being provided on the surface of the auxiliary support frame, and an arc-shaped rotating groove being provided on one side of the inner wall of the limiting groove, and a sliding top block being rotatably connected to the lower end of the driving cylinder via a hinge support, one end of the sliding top block being inserted into the inner cavity of the limiting groove and slidably connected thereto;

[0007] A vertical anti-deviation bracket is fitted to one side of the auxiliary support frame. The anti-deviation bracket is fixedly connected to the main beam plate by a steel plate. A fixed shaft is fixedly installed on the anti-deviation bracket. A sleeve is movably sleeved on the outside of the fixed shaft. A rotating block is fixed on the surface of the sleeve, and one end of the rotating block is located in the inner cavity of the limiting slide groove. The sliding top block slides and pushes the rotating block to slide out of the inner cavity of the limiting slide groove along the rotating slide groove.

[0008] Preferably, side supports are provided on both sides of the main beam plate, and a telescopic arm driven by a hydraulic cylinder is provided between the side supports and the main beam plate. The bottom of the side supports is rotatably mounted with wheels.

[0009] Preferably, the sliding top block is L-shaped, the bottom of the limiting slide groove is provided with a guide slide groove, one end of the sliding top block is fixed with a guide slider, and the guide slider is located in the inner cavity of the guide slide groove and slidably connected thereto.

[0010] Preferably, the front end of the rotating block is L-shaped, the front surface of the rotating block is arc-shaped, and a chamfer is provided at the contact position between the front end of the rotating block and the auxiliary support frame.

[0011] Preferably, a limiting plate is provided at the fixed connection between the end of the fixed shaft and the anti-deviation bracket. The limiting plate is L-shaped, and the upper surface of the horizontal plate of the limiting plate is attached to the lower horizontal surface of the rotating block.

[0012] Preferably, a retaining ring is provided on the outer side of the end of the sleeve away from the limiting plate, and the retaining ring is fixedly sleeved on the outer side of the fixed shaft. A compression spring is fixedly connected between the retaining ring and the sleeve.

[0013] Preferably, the driving cylinders are arranged in groups of two, and there are two groups in total. One group of driving cylinders is rotatably mounted on the lower surface of the main beam plate, and the other group of driving cylinders is rotatably mounted on both sides of the main beam plate. The width of the auxiliary support frame is smaller than the width of the main beam plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features rotatable auxiliary support frames at both ends of the main beam plate. One side of each auxiliary support frame has a vertically fixed anti-deviation bracket, with a rotating catch mounted on it. Limit grooves and rotation grooves are formed on the surface of the auxiliary support frames. A sliding block is located at the lower end of a drive cylinder. The drive cylinder extends to push the sliding block, thereby rotating the auxiliary support frame. When the auxiliary support frame rotates to near verticality and close to the anti-deviation bracket, the sliding block is positioned at the lower end of the limit groove's inner cavity. At this point, the auxiliary support frame passes the rotating catch. The auxiliary support frame has a rotating locking block at one end that can engage with the inner cavity of the limiting slide groove, thereby stabilizing its position and preventing it from tilting. When the auxiliary support frame needs to be folded and stored, the drive cylinder retracts, causing the sliding top block to slide up the inner cavity of the limiting slide groove until it pushes the rotating locking block to rotate and slide out of the rotating slide groove, allowing the auxiliary support frame to rotate and fold. This device provides auxiliary support for the entire gantry frame by setting the auxiliary support frame, and the auxiliary support frame is stable and not easily tilted when unfolded to a vertical position, thus facilitating the adjustment of the side support frame position and achieving variable span. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the connection between the auxiliary support frame and the main beam plate structure of this utility model;

[0018] Figure 3 This is an exploded view of the auxiliary support frame, drive cylinder, and anti-deviation stop frame structure of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of a partial structure of the anti-deviation guard of this utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of the sleeve structure of this utility model;

[0021] Figure 6 This is a schematic diagram showing the separation of the sliding top block and the auxiliary support frame structure of this utility model;

[0022] Figure 7 This is a partial sectional view of the auxiliary support frame, drive cylinder, and anti-deviation bracket of this utility model.

[0023] In the diagram: 1. Main beam plate; 2. Side support frame; 21. Telescopic arm; 22. Traveling wheel; 3. Auxiliary support frame; 31. Limiting slide groove; 32. Guide slide groove; 33. Rotating slide groove; 4. Drive cylinder; 41. Sliding top block; 42. Guide slider; 5. Anti-deviation bracket; 51. Fixed shaft; 52. Sleeve; 521. Rotating locking block; 522. Chamfer; 53. Retaining ring; 54. Compression spring; 55. Limiting plate; 6. Steel plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1, please refer to Figures 1-7This utility model provides a technical solution: an adjustable subway track-laying vehicle gantry structure, including a main beam plate 1. Auxiliary support frames 3 are rotatably mounted on both ends of the lower surface of the main beam plate 1 via hinge supports. The auxiliary support frames 3 can be rotatably folded and stored on the lower surface of the main beam plate 1, or rotated and unfolded to a vertical position. After rotating to a vertical position, the auxiliary support frames 3 can support the main beam plate 1, thereby facilitating the overall span adjustment of the gantry of this device. A drive cylinder 4 for rotating the auxiliary support frame 3 is provided in the middle of the auxiliary support frame 3. The upper end of the drive cylinder 4 is rotatably connected to the main beam plate 1 via a hinge support. Figure 2 As shown, when the drive cylinder 4 extends or retracts, it can drive the auxiliary support frame 3 to rotate. A limiting groove 31 is opened on the surface of the auxiliary support frame 3, and an arc-shaped rotating groove 33 is opened on one side of the inner wall of the limiting groove 31. The lower end of the drive cylinder 4 is rotatably connected to a sliding top block 41 through a hinge support. One end of the sliding top block 41 is inserted into the inner cavity of the limiting groove 31 and slidably connected thereto. When the auxiliary support frame 3 is in a nearly vertical position:

[0026] ① When the drive cylinder 4 extends, it will cause the sliding top block 41 to slide downward in the inner cavity of the limiting slide groove 31. Only after the sliding top block 41 slides to the bottom of the limiting slide groove 31 will it continue to push the auxiliary support frame 3 to rotate.

[0027] ② When the drive cylinder 4 retracts, it will drive the sliding top block 41 to slide upward in the inner cavity of the limit slide groove 31 until the sliding top block 41 slides to the uppermost end of the limit slide groove 31, and then it will continue to pull the auxiliary support frame 3 to rotate.

[0028] Secondly, a vertical anti-deviation bracket 5 is attached to one side of the auxiliary support frame 3. The anti-deviation bracket 5 is used to limit the rotation of the auxiliary support frame 3, ensuring that the rotation angle of the auxiliary support frame 3 does not exceed 90 degrees. That is, after the auxiliary support frame 3 is rotated from horizontal to vertical, it can be blocked by the anti-deviation bracket 5, thereby improving the stability of the auxiliary support frame 3. The anti-deviation bracket 5 is fixedly connected to the main beam plate 1 through a steel plate 6. A fixed shaft 51 is fixedly installed on the anti-deviation bracket 5. A sleeve 52 is movably sleeved on the outside of the fixed shaft 51. The sleeve 52 can slide along the length direction of the fixed shaft 51 and can also rotate around the fixed shaft 51. The surface of the sleeve 52 is fixed. A rotating locking block 521 is provided, with one end of the rotating locking block 521 located in the inner cavity of the limiting slide groove 31. The end of the rotating locking block 521 is fastened in the inner cavity of the limiting slide groove 31 and can be used to position the auxiliary support frame 3. At this time, the auxiliary support frame 3 remains vertical and will not tilt, thereby improving the stability of the auxiliary support frame 3. When the sliding top block 41 slides upward along the inner cavity of the limiting slide groove 31, the sliding top block 41 can push the rotating locking block 521 to rotate. At this time, the rotating locking block 521 slides out of the inner cavity of the limiting slide groove 31 along the rotating slide groove 33, the positioning of the auxiliary support frame 3 is released, and the auxiliary support frame 3 can rotate in a direction away from the anti-deviation baffle 5, thereby folding and storing it on the lower surface of the main beam plate 1.

[0029] In summary, this device can drive the auxiliary support frame 3 to rotate and unfold through the extension drive cylinder 4 until the auxiliary support frame 3 is placed vertically. The auxiliary support frame 3 can provide auxiliary support for the gantry. When the auxiliary support frame 3 is placed vertically, the rotating block 521 is locked in the inner cavity of the limiting slide groove 31. The rotating block 521, together with the anti-deviation bracket 5, can stably position the auxiliary support frame 3 and prevent the auxiliary support frame 3 from tilting easily. When the drive cylinder 4 actively retracts, the sliding top block 41 first slides up the inner cavity of the limiting slide groove 31 and pushes the rotating block 521 to rotate until the rotating block 521 is pushed out of the inner cavity of the limiting slide groove 31 along the rotating slide groove 33. Then, the auxiliary support frame 3 can automatically fold and be stored on the lower surface of the main beam plate 1 as the drive cylinder 4 retracts.

[0030] To further describe the structure of the gantry, this application also includes side supports 2 on both sides of the main beam plate 1, with a telescopic arm 21 driven by a hydraulic cylinder between the side supports 2 and the main beam plate 1, and wheels 22 rotatably mounted on the bottom of the side supports 2. Figure 1 As shown, after the auxiliary support frame 3 is vertical and supports the main beam plate 1, the hydraulic cylinder on the telescopic arm 21 can extend and retract, thereby adjusting the distance between the two side uprights 2, thus realizing the overall span adjustment of this device.

[0031] To prevent the sliding top block 41 from sliding and getting stuck in the inner cavity of the rotating groove 33, the sliding top block 41 of this application is L-shaped. A guide groove 32 is provided at the bottom of the limiting groove 31. A guide slider 42 is fixed to one end of the sliding top block 41. The guide slider 42 is located in the inner cavity of the guide groove 32 and is slidably connected to it. Figure 6 As shown, the cooperation between the guide slider 42 and the guide groove 32 can prevent one end of the sliding top block 41 from sliding into the inner cavity of the rotating groove 33 and getting stuck. In addition, two sets of drive cylinders 4 are set together, and there are a total of two sets. One set of drive cylinders 4 is rotatably mounted on the lower surface of the main beam plate 1, and the other set of drive cylinders 4 is rotatably mounted on both sides of the main beam plate 1. The width of the auxiliary support frame 3 is smaller than the width of the main beam plate 1. Figure 2 As shown, when the auxiliary support frame 3 is folded and stored, the auxiliary support frame 3 at the left end of the main beam plate 1 is rotated first. Since the distance between the drive cylinders 4 on both sides of the main beam plate 1 is greater than the width of the auxiliary support frame 3, the auxiliary support frame 3 will not interfere with the drive cylinders 4 when it is folded. Then the auxiliary support frame 3 at the right end of the main beam plate 1 is rotated until the auxiliary support frame 3 is pressed on the previous auxiliary support frame 3 from bottom to top.

[0032] In order to engage the front end of the rotating block 521 with the inner cavity of the limiting groove 31, the front end of the rotating block 521 of this application is L-shaped, and the specific structure of the rotating block 521 is as follows: Figure 5 As shown, the rotating block 521 is L-shaped in both the horizontal and vertical directions, and the front surface of the rotating block 521 has an arc-shaped structure. Figure 7 As shown, when the rotating block 521 rotates counterclockwise around the fixed axis 51, the arc-shaped structure of its front end face can avoid interference with the rotating slide 33. In addition, a chamfer 522 is provided at the contact position between the front end of the rotating block 521 and the auxiliary support frame 3, combined with Figure 3 and Figure 4 As shown, when the auxiliary support frame 3 rotates close to the anti-deviation stop frame 5, the auxiliary support frame 3 will first contact the end of the rotating block 521. At this time, the surface edge of the auxiliary support frame 3 can push the rotating block 521 and the sleeve 52 to slide along the length direction of the fixed shaft 51 by pressing the chamfer 522. After the auxiliary support frame 3 and the anti-deviation stop frame 5 are in contact, the sleeve 52 and the rotating block 521 slide in opposite directions to lock the front end of the rotating block 521 into the inner cavity of the limiting slide groove 31. Only then will the auxiliary support frame 3 be stably positioned and the auxiliary support frame 3 will not be able to rotate or tilt actively.

[0033] To limit the rotation of the rotating block 521, this application also includes a limiting plate 55 at the fixed connection between the end of the fixed shaft 51 and the anti-deviation bracket 5. The limiting plate 55 is L-shaped, and the upper surface of the horizontal plate of the limiting plate 55 is in contact with the horizontal lower surface of the rotating block 521. Figure 4 and Figure 7 As shown, the limiting plate 55 can be used to limit the rotation of the sleeve 52 and the rotating block 521, thereby ensuring that the rotating block 521 is always in a horizontal position.

[0034] In order to reset the rotating block 521, this application also has a retaining ring 53 provided on the outer side of the end of the sleeve 52 away from the limiting plate 55, and the retaining ring 53 is fixedly sleeved on the outer side of the fixed shaft 51. A compression spring 54 is fixedly connected between the retaining ring 53 and the sleeve 52. The compression spring 54 provides a thrust so that the rotating block 521 always tends to be inserted into the inner cavity of the limiting slide groove 31. At the same time, the compression spring 54 itself can be twisted and has a tendency to be reset after being twisted. Therefore, the compression spring 54 can also act as a torsion spring to drive the rotating block 521 to always keep it in a horizontal position.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable subway track-laying gantry structure, comprising a main beam plate (1), characterized in that: Both ends of the lower surface of the main beam plate (1) are rotatably mounted with auxiliary support frames (3) via hinge supports. The middle of the auxiliary support frame (3) is provided with a driving cylinder (4) to drive the auxiliary support frame (3) to rotate. The upper end of the driving cylinder (4) is rotatably connected to the main beam plate (1) via a hinge support. The surface of the auxiliary support frame (3) is provided with a limiting slide groove (31), and an arc-shaped rotating slide groove (33) is provided on one side of the inner wall of the limiting slide groove (31). The lower end of the driving cylinder (4) is rotatably connected with a sliding top block (41) via a hinge support. One end of the sliding top block (41) is inserted into the inner cavity of the limiting slide groove (31) and slidably connected thereto. A vertical anti-deviation bracket (5) is attached to one side of the auxiliary support frame (3). The anti-deviation bracket (5) is fixedly connected to the main beam plate (1) through a steel plate (6). A fixed shaft (51) is fixedly installed on the anti-deviation bracket (5). A sleeve (52) is movably sleeved on the outside of the fixed shaft (51). A rotating block (521) is fixed on the surface of the sleeve (52), and one end of the rotating block (521) is located in the inner cavity of the limiting slide groove (31). The sliding top block (41) slides and pushes the rotating block (521) to slide out of the inner cavity of the limiting slide groove (31) along the rotating slide groove (33).

2. The adjustable subway track-laying car gantry structure according to claim 1, characterized in that: Side supports (2) are provided on both sides of the main beam plate (1). A telescopic arm (21) driven by a hydraulic cylinder is provided between the side supports (2) and the main beam plate (1). A traveling wheel (22) is rotatably installed at the bottom of the side supports (2).

3. The adjustable subway track-laying car gantry structure according to claim 1, characterized in that: The sliding top block (41) is L-shaped, and the bottom of the limiting groove (31) is provided with a guide groove (32). One end of the sliding top block (41) is fixed with a guide slider (42), and the guide slider (42) is located in the inner cavity of the guide groove (32) and is slidably connected to it.

4. The adjustable subway track-laying car gantry structure according to claim 1, characterized in that: The front end of the rotating block (521) is L-shaped, the front surface of the rotating block (521) is arc-shaped, and a chamfer (522) is provided at the contact position between the front end of the rotating block (521) and the auxiliary support frame (3).

5. The adjustable subway track-laying car gantry structure according to claim 1, characterized in that: A limiting plate (55) is provided at the fixed connection between the end of the fixed shaft (51) and the anti-deviation bracket (5). The limiting plate (55) is "L" shaped, and the upper surface of the horizontal plate of the limiting plate (55) is attached to the horizontal lower surface of the rotating block (521).

6. The adjustable subway track-laying car gantry structure according to claim 5, characterized in that: A retaining ring (53) is provided on the outer side of the end of the sleeve (52) away from the limiting plate (55), and the retaining ring (53) is fixedly sleeved on the outer side of the fixed shaft (51). A compression spring (54) is fixedly connected between the retaining ring (53) and the sleeve (52).

7. The adjustable subway track-laying car gantry structure according to claim 1, characterized in that: The drive cylinders (4) are arranged in pairs, and two sets are arranged in total. One set of drive cylinders (4) is rotatably installed on the lower surface of the main beam plate (1), and the other set of drive cylinders (4) is rotatably installed on both sides of the main beam plate (1). The width of the auxiliary support frame (3) is smaller than the width of the main beam plate (1).

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