Highway bridge height limiting structure with adjustable width

Abstract

The utility model provides a highway bridge height limiting structure with an adjustable width. The highway bridge height limiting structure comprises a height limiting frame, the two sides of the bottom of the height limiting frame are each fixedly provided with one cement base; the movable blocking frame is movably mounted on the inner side of the cement base; the adjusting mechanism is installed in the cement base, and the adjusting mechanism is detachably connected with the movable blocking frame through a locking inserting piece; the lock box is installed on the outer side of the cement base, and an operating mechanism connected with the adjusting mechanism and a pull rod connected with the locking inserting piece are arranged in the lock box; the operating mechanism is used for operating the adjusting mechanism, and the pull rod is used for operating the locking inserting piece and the movable blocking frame to be locked or unlocked. The distance between the two movable blocking frames is adjusted through the adjusting mechanism, the width of the position where the vehicle passes through is adjusted, and the requirement for passing of the emergency vehicle under the emergency condition is met.

Description

Technical Field

[0001] This utility model relates to the field of highway bridges, and in particular to a height-limiting structure for highway bridges with adjustable width. Background Technology

[0002] The entrance to a highway bridge will be equipped with a height restriction structure to limit the height of vehicles entering. At the same time, the concrete bases on both sides will be widened to support the columns and the top beams, and also to limit the width of passing vehicles.

[0003] In the prior art, in order to facilitate the passage of emergency vehicles through height-restricted structures with width requirements, an adjustable width design is adopted to deal with the above situation. However, the traditional width adjustment method, such as the existing patent document "CN220953101U A height-restricted structure for highway bridges with adjustable width", divides the height-restricted structure into two parts and adjusts the width by moving the two parts closer or further apart. However, the height-restricted structure is made of cement, and the overall height-restricted structure made of cement is relatively heavy, which is not convenient for adjusting the width of the vehicle passage by moving it. Utility Model Content

[0004] This invention addresses the technical problem that traditional width adjustment methods cannot adapt to height-limited structures made of cement, by providing an adjustable-width height-limited structure for highway bridges.

[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0006] This utility model provides an adjustable-width height restriction structure for highway bridges, including a height restriction frame; it also includes: a concrete base, with a concrete base fixedly installed on both sides of the bottom of the height restriction frame; a movable retaining frame, which is movably installed inside the concrete base; an adjustment mechanism, which is installed inside the concrete base and is detachably connected to the movable retaining frame via a locking plug; and a lock box, which is installed on the outside of the concrete base, and contains an operating mechanism connected to the adjustment mechanism and a pull rod connected to the locking plug; the operating mechanism is used to operate the adjustment mechanism, and the pull rod is used to operate the locking plug to lock or unlock the movable retaining frame.

[0007] In this technical solution, an adjustment mechanism is used to adjust the distance between the two movable baffles, thereby adjusting the width at the vehicle passage position to meet the passage requirements of emergency vehicles in emergency situations.

[0008] Preferably, the adjusting mechanism includes a plate and a threaded sleeve; the threaded sleeve is fixedly installed inside the cement base, and the threaded sleeve is threadedly connected to a threaded post. One end of the threaded post is rotatably connected to the plate. Two guide rods are fixedly connected to the side wall of the plate. A first through hole is opened inside the cement base, and a guide sleeve is fixedly installed inside the first through hole. The guide sleeve is slidably sleeved with the guide rod. A second through hole is opened on the lock box wall, aligned with the first through hole. The guide rod passes through the second through hole and extends into the lock box.

[0009] In this technical solution, the adjustment mechanism is used to drive the movable retaining frames to move, and after the two movable retaining frames move, the distance between them can be adjusted.

[0010] Preferably, the lock box includes a box body; an opening is provided on one side of the box body, a door is provided at the opening, one side of the door is connected to the lock body by a hinge, a lock is installed between the other side of the door and the box body, and a handle is fixedly installed on the door.

[0011] In this technical solution, the lock box is protected, allowing only personnel who can open the lock to operate it, while preventing non-personnel who cannot open the lock from operating it, thus reducing the possibility of unauthorized operation.

[0012] Preferably, the operating mechanism includes a first gear and a second gear; a rotating shaft is rotatably mounted inside the housing, the first gear is fixedly sleeved on the rotating shaft, and the first gear is meshed with the second gear, the second gear is coaxially fixedly connected to the knob, and the knob is rotatably mounted inside the housing.

[0013] In this technical solution, the operating mechanism is used to operate the adjusting mechanism.

[0014] Preferably, the rotating shaft and the threaded column are coaxially arranged; a square rod is fixedly connected to the end of the rotating shaft, and the square rod is connected to a square hole opened at the center of the threaded column.

[0015] In this technical solution, the operating mechanism drives the square rod to rotate, and the square rod provides the drive for the adjustment mechanism.

[0016] Preferably, the diameter of the first gear is larger than the diameter of the second gear.

[0017] Preferably, the locking plug includes a cylinder; the cylinder and the plate form a cavity, and a pressure seat is elastically installed in the cavity by a second spring. A locking block abuts on both sides of the pressure seat. The locking block is elastically connected to the side wall of the cavity by a first spring, and the locking block passes through a guide hole opened on the side wall of the cylinder.

[0018] Preferably, the cross-section of the pressure seat is an isosceles trapezoid, and one side of the locking block is provided with an inclined surface adapted to the side wall of the pressure seat.

[0019] Preferably, the plate has a socket for inserting a cylinder, and lock holes for inserting a lock block are provided on both sides of the socket.

[0020] In this technical solution, the movable retaining frame can be detached and installed by means of a locking plug.

[0021] Preferably, the guide rod has an elongated hole along its length, the pull rod is connected to the elongated hole with a clearance fit, one end of the pull rod is fixedly connected to the pressure seat, and the other end of the pull rod is fixedly connected to an end ring, and the end ring and the end of the pull rod are located inside the box.

[0022] In this technical solution, a lever is used to operate the locking plug to lock or unlock it.

[0023] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0024] The positive and progressive effects of this utility model are as follows:

[0025] The aforementioned adjustable-width highway bridge height restriction structure achieves width adjustment by setting movable baffles on the inner sides of two concrete bases and adjusting the distance between the two movable baffles through an adjustment mechanism. In emergency situations, the structure can be widened to allow emergency vehicles to pass through, while the height restriction structure as a whole does not need to be moved. It is suitable for concrete-cast height restriction structures.

[0026] Furthermore, the movable retaining frame can be detachably installed onto the adjustment mechanism via a locking plug, and can be disassembled and replaced if the movable retaining frame is damaged in an accidental collision with the vehicle.

[0027] Furthermore, the lock box, pull rod, and operating mechanism are all located inside the lock box. The pull rod is used to lock or unlock the locking plug and the movable retaining frame, while the operating mechanism is used to operate the adjustment mechanism. This serves to prevent unauthorized operation of the adjustment mechanism and unauthorized disassembly of the movable retaining frame by non-staff members. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the lock box of this utility model.

[0030] Figure 3 This is a schematic diagram of the operating mechanism of this utility model.

[0031] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model.

[0032] Figure 5 This utility model Figure 4 Enlarged structural diagram of section A in the middle.

[0033] Figure 6 This utility model Figure 4 Enlarged structural diagram of section B.

[0034] Figure 7 This is a structural diagram of the locking plug in the unlocked state of this utility model.

[0035] Explanation of reference numerals in the attached figures

[0036] 1. Height restriction frame; 101. Column; 102. Horizontal beam;

[0037] 2. Cement base; 201. First through hole;

[0038] 3. Movable retaining frame; 301. Insertion hole; 302. Lock hole;

[0039] 4. Lock box; 401. Box body; 4011. Second through hole; 402. Box door; 403. Hinge; 404. Door lock; 405. Handle;

[0040] 5. Operating mechanism; 501. First gear; 502. Second gear; 503. Rotating shaft; 504. Knob;

[0041] 6. Adjustment mechanism; 601. Threaded column; 602. Square hole; 603. Square rod; 604. Threaded sleeve; 605. Plate; 606. Guide rod; 607. Guide sleeve;

[0042] 7. Tie rod; 701. End ring;

[0043] 8. Locking insert; 801. Insert sleeve; 802. Pressure base; 803. Locking block; 804. First spring; 805. Guide hole; 806. Second spring;

[0044] 9. Bollards. Detailed Implementation

[0045] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0046] like Figure 1-7As shown, an adjustable-width highway bridge height restriction structure includes a height restriction frame 1; it also includes: a concrete base 2, with a concrete base 2 fixedly installed on both sides of the bottom of the height restriction frame 1; a movable baffle 3, which is movably installed inside the concrete base 2; an adjustment mechanism 6, which is installed inside the concrete base 2 and is detachably connected to the movable baffle 3 via a locking plug 8; and a lock box 4, which is installed on the outside of the concrete base 2. The lock box 4 contains an operating mechanism 5 connected to the adjustment mechanism 6 and a pull rod 7 connected to the locking plug 8. The operating mechanism 5 is used to operate the adjustment mechanism 6, and the pull rod 7 is used to operate the locking plug 8 to lock or unlock the movable baffle 3.

[0047] The height restriction frame 1 consists of two uprights 101 and a crossbeam 102; the two uprights 101 are fixedly installed at the bottom of the left and right ends of the crossbeam 102 respectively; the height restriction frame 1 forms an inverted U-shaped structure, and plays the role of limiting height by blocking the crossbeam 102.

[0048] Movable baffle 3 Figure 4 As shown, it is a U-shaped plate.

[0049] like Figure 3-4 As shown, the adjusting mechanism 6 includes a plate 605 and a threaded sleeve 604; the threaded sleeve 604 is fixedly installed inside the cement base 2, and the threaded sleeve 604 is threadedly connected to a threaded post 601. One end of the threaded post 601 is rotatably connected to the plate 605. Two guide rods 606 are fixedly connected to the side wall of the plate 605. A first through hole 201 is opened in the cement base 2, and a guide sleeve 607 is fixedly installed in the first through hole 201. The guide sleeve 607 is slidably sleeved with the guide rods 606. A second through hole 4011 is opened in the wall of the lock box 4, which is aligned with the first through hole 201. The guide rods 606 pass through the second through hole 4011 and extend into the lock box 4.

[0050] The operating mechanism 5 includes a first gear 501 and a second gear 502; a rotating shaft 503 is rotatably installed inside the housing 401, the first gear 501 is fixedly sleeved on the rotating shaft 503, and the first gear 501 and the second gear 502 are meshed and connected, the second gear 502 is coaxially fixedly connected to the knob 504, and the knob 504 is rotatably installed inside the housing 401.

[0051] The rotating shaft 503 is coaxially arranged with the threaded column 601; a square rod 603 is fixedly connected to the end of the rotating shaft 503, and the square rod 603 is connected to the square hole 602 opened at the center of the threaded column 601.

[0052] The diameter of the first gear 501 is larger than the diameter of the second gear 502.

[0053] When adjusting the movable retaining frame 3, the second gear 502 is rotated by turning the knob 504. Through the meshing transmission between the second gear 502 and the first gear 501, the rotating shaft 503 and the square rod 603 rotate together. The square rod 603 drives the threaded column 601 to rotate. The threaded column 601 and the threaded sleeve 604 are screwed together, so that the threaded column 601 can not only rotate but also move along the length direction. The threaded column 601 drives the plate 605 to move. The plate 605 is guided by the guide rod 606 and the guide sleeve 607, so that the plate 605 drives the movable retaining frame 3 to move left and right. By moving the two movable retaining frames 3, the distance between them can be adjusted, that is, the vehicle passage width can be adjusted.

[0054] The square rod 603 is connected to the square hole 602 of the threaded column 601. When the threaded column 601 moves, the square rod 603 slides with the square hole 602, which will not affect the movement of the threaded column 601.

[0055] like Figure 4 and Figure 5 As shown, the distance between the two movable baffles 3 is at its minimum at this time, which is the width for vehicles to pass through under normal conditions; as Figure 5 As shown, the end of the guide rod 606 extends outward to form a baffle. The baffle contacts the inner wall of the housing 401, causing obstruction, and the movable baffle 3 cannot move inward.

[0056] In an emergency, the two movable baffles 3 can be adjusted and moved using the above-mentioned adjustment operation to increase the distance between them, thus allowing emergency vehicles to pass.

[0057] like Figure 4 , Figure 6 as well as Figure 7 As shown, the locking plug 8 includes a plug cylinder 801; the plug cylinder 801 and the plate body 605 form a cavity, and a pressure seat 802 is elastically installed in the cavity by a second spring 806. A locking block 803 abuts against both sides of the pressure seat 802. The locking block 803 is elastically connected to the side wall of the cavity by a first spring 804, and the locking block 803 passes through a guide hole 805 opened on the side wall of the plug cylinder 801.

[0058] The cross-section of the pressure seat 802 is an isosceles trapezoid, and the locking block 803 has an inclined surface on one side that adapts to the side wall of the pressure seat 802.

[0059] The plate 605 has an insertion hole 301 for inserting the insert cylinder 801, and both sides of the insertion hole 301 have a locking hole 302 for inserting the locking block 803.

[0060] The guide rod 606 has an elongated hole along its length. The pull rod 7 is connected to the elongated hole with a clearance fit. One end of the pull rod 7 is fixedly connected to the pressure seat 802, and the other end of the pull rod 7 is fixedly connected to an end ring 701. The end ring 701 and the end of the pull rod 7 are located inside the housing 401.

[0061] A baffle 9 is fixedly installed inside the cavity; for example... Figure 6-7 As shown.

[0062] Figure 6 In the middle, the locking plug 8 is in the locked state, the locking block 803 is inserted into the lock hole 302, the first spring 804 is in the compressed state, and the second spring 806 is also in the compressed state.

[0063] When the movable retaining frame 3 is damaged by a collision and needs to be replaced, a worker pulls the two end rings 701 with both hands, causing the pull rod 7 to move the pressure seat 802, compressing the second spring 806 and increasing its compression until the pressure seat 802 contacts the retaining post 9. After the pressure seat 802 moves, the width between the two locking blocks 803 decreases, and the locking block 803, through the compression force of the first spring 804, keeps its inclined surface in contact with the side wall of the pressure seat 802, thus allowing the locking block 803 to be pulled out of the lock hole 302, completing the unlocking. After unlocking, as... Figure 7 As shown; after unlocking, another worker removes the socket 301 from the socket 801, completing the disassembly of the movable retaining frame 3.

[0064] While maintaining the pulled end ring 701, the operator disassembles the movable retaining frame 3, inserts the new movable retaining frame 3 into the insertion hole 301 and the insertion tube 801, ensuring the movable retaining frame 3 is firmly against the plate 605. Then, the operator releases the end ring 701, and the second spring 806 pushes the pressure seat 802 to move. The pressure seat 802 then pushes the two locking blocks 803 to move, inserting them into the lock holes 302 and increasing the compression of the first spring 804, completing the locking installation. After unlocking, as... Figure 6 As shown.

[0065] like Figure 2-4 As shown, the lock box 4 includes a box body 401; an opening is provided on one side of the box body 401, and a door 402 is provided at the opening. One side of the door 402 is connected to the door 402 by a hinge 403. A door lock 404 is installed between the other side of the door 402 and the box body 401. A handle 405 is fixedly installed on the door 402.

[0066] When operating the operating mechanism 5 and the lever 7, the box door 402 must be opened so that when the movable baffle 3 moves and the guide rod 606 moves out of the box 401, there will be no obstruction.

[0067] Meanwhile, the lock box 4 not only enhances the protection but also prevents unauthorized personnel from operating it; only personnel authorized to open lock 404 can operate it.

[0068] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. An adjustable-width highway bridge height restriction structure, comprising a height restriction frame (1); characterized in that, Also includes: Cement base (2): A cement base (2) is fixedly installed on both sides of the bottom of the height restriction frame (1); Movable baffle (3), which is movably installed to the inside of the cement base (2); Adjustment mechanism (6), the adjustment mechanism (6) is installed in the cement base (2), and the adjustment mechanism (6) is detachably connected to the movable baffle (3) through locking plug (8); Lock box (4), the lock box (4) is installed on the outside of cement base (2), the lock box (4) is provided with operating mechanism (5) connected to adjustment mechanism (6) and pull rod (7) connected to locking plug (8); the operating mechanism (5) is used to operate adjustment mechanism (6), and the pull rod (7) is used to operate locking plug (8) and movable frame (3) to lock or unlock.

2. The adjustable width highway bridge height restriction structure as described in claim 1, characterized in that: The adjustment mechanism (6) includes a plate (605) and a threaded sleeve (604); the threaded sleeve (604) is fixedly installed in the cement base (2), and the threaded sleeve (604) is threadedly connected to a threaded post (601). One end of the threaded post (601) is rotatably connected to the plate (605). Two guide rods (606) are fixedly connected to the side wall of the plate (605). A first through hole (201) is opened in the cement base (2). A guide sleeve (607) is fixedly installed in the first through hole (201). The guide sleeve (607) is slidably sleeved with the guide rod (606). A second through hole (4011) is opened in the wall of the lock box (4) and aligned with the first through hole (201). The guide rod (606) passes through the second through hole (4011) and extends into the lock box (4).

3. The adjustable width highway bridge height restriction structure as described in claim 2, characterized in that: The lock box (4) includes a box body (401); an opening is provided on one side of the box body (401), and a door (402) is provided at the opening. One side of the door (402) is connected to the door (402) by a hinge (403), and a door lock (404) is installed between the other side of the door (402) and the box body (401). A handle (405) is fixedly installed on the door (402).

4. The adjustable width highway bridge height restriction structure as described in claim 3, characterized in that: The operating mechanism (5) includes a first gear (501) and a second gear (502); a rotating shaft (503) is rotatably installed inside the housing (401), the first gear (501) is fixedly sleeved on the rotating shaft (503), and the first gear (501) and the second gear (502) are meshed and connected, the second gear (502) is coaxially fixedly connected to the knob (504), and the knob (504) is rotatably installed inside the housing (401).

5. The adjustable width highway bridge height restriction structure as described in claim 4, characterized in that: The rotating shaft (503) is coaxially arranged with the threaded column (601); a square rod (603) is fixedly connected to the end of the rotating shaft (503), and the square rod (603) is connected to the square hole (602) opened at the center of the threaded column (601).

6. The adjustable width highway bridge height restriction structure as described in claim 4, characterized in that: The diameter of the first gear (501) is larger than the diameter of the second gear (502).

7. The adjustable width highway bridge height restriction structure as described in claim 3, characterized in that: The locking plug (8) includes a plug (801); the plug (801) and the plate (605) form a cavity, and a pressure seat (802) is elastically installed in the cavity by a second spring (806). A locking block (803) abuts against both sides of the pressure seat (802). The locking block (803) is elastically connected to the side wall of the cavity by a first spring (804), and the locking block (803) passes through the guide hole (805) opened on the side wall of the plug (801).

8. The adjustable width highway bridge height restriction structure as described in claim 7, characterized in that: The cross-section of the pressure seat (802) is an isosceles trapezoid, and the locking block (803) has an inclined surface on one side that is adapted to the side wall of the pressure seat (802).

9. The adjustable width highway bridge height restriction structure as described in claim 7, characterized in that: The plate (605) has a socket (301) for inserting a tube (801), and lock holes (302) for inserting a lock block (803) are provided on both sides of the socket (301).

10. The adjustable width highway bridge height restriction structure as described in claim 7, characterized in that: The guide rod (606) has an elongated hole along its length. The pull rod (7) is connected to the elongated hole with a clearance fit. One end of the pull rod (7) is fixedly connected to the pressure seat (802), and the other end of the pull rod (7) is fixedly connected to an end ring (701). The end ring (701) and the end of the pull rod (7) are located inside the housing (401).

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