Height-adjustable bridge supporting frame

Abstract

The utility model relates to the technical field of bridge construction, in particular to a height-adjustable bridge supporting frame which comprises a base and a supporting plate, and the four corners of the top end of the base are fixedly connected; by starting an electric push rod, a mounting plate can drive four moving rods to move downwards and drive clamping plates in four supporting rods to be connected with corresponding clamping grooves in a clamped mode at the same time, the consistency of the fixing mechanism in the operation process is improved, and when the moving rods move downwards, under the action of two connecting rods, the moving rods can move downwards, so that the fixing mechanism is fixed. When the clamping plates and the clamping grooves are staggered, under the action of the arc surfaces of the clamping plates and the inclined surfaces at the openings of the clamping grooves, the clamping plates can extrude the clamping grooves and push the moving plates to move upwards or downwards, so that the central points of the clamping plates are aligned with the central points of the corresponding clamping grooves, and the clamping plates are clamped in the clamping grooves; and the clamping plate can smoothly enter the clamping groove to complete clamping, so that the fixing effect of the fixing mechanism on the supporting rod is guaranteed, and the practicability of the device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a bridge support frame with adjustable height. Background Technology

[0002] A bridge is a structure used to cross obstacles (such as rivers, canyons, roads, etc.). Bridges play an important role in transportation. During the construction of a bridge, a bridge support frame is usually used to provide a temporary support structure to ensure safety during the construction process.

[0003] A search revealed the Chinese patent "A Height-Adjustable Support Frame for Highway Bridge Construction" (authorization announcement number CN218492283U). The motor drives a threaded rod to rotate via its output shaft. As the threaded rod rotates, the sleeve, under the action of the thread, moves the lifting plate up and down. This simple and convenient operation solves the problem of existing highway bridge construction support frames being unable to adjust height. After lifting, pushing the locking block into the slot provides a fixed support for the vertical rod and the lifting plate.

[0004] Although the aforementioned application can use the clamping plate and the clamping slot to fix the vertical rod, when the lifting plate is adjusted to the appropriate height, it cannot be guaranteed that the clamping rod is aligned with one of the clamping slots, which will cause the clamping rod and the clamping slot to be unable to perform normal clamping operation, thus affecting the fixation of the vertical rod.

[0005] Therefore, an adjustable-height bridge support frame is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable height bridge support frame to solve the above-mentioned problems. It improves the problem that when the lifting plate is adjusted to a suitable height, it is impossible to ensure that the locking rod is aligned with one of the locking slots, which would prevent the locking rod and the locking slot from engaging properly and thus affect the fixation of the vertical rod.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: an adjustable height bridge support frame, comprising: a base and a support plate, wherein a fixed cylinder is fixedly connected to the top four corners of the base, a support rod is slidably connected to the inner wall of the fixed cylinder, the top ends of the four support rods pass through the fixed cylinder and are fixedly connected to the bottom end of the support plate, and a fixing mechanism is provided inside the fixed cylinder.

[0008] The fixing mechanism includes an electric push rod fixedly connected to the bottom end of the support plate. The telescopic end of the electric push rod is fixedly connected to a mounting plate. A movable rod is slidably connected to the inner wall of the support rod. The end of the mounting plate passes through multiple support rods and is fixedly connected to the surface of the movable rods. The bottom end of the support rod is fixedly connected to a mounting cylinder. A clamping plate is slidably connected to the inner wall of the mounting cylinder. The bottom end of the movable rod passes through the interior of the mounting cylinder and is hinged to two connecting rods. The other ends of the two connecting rods are respectively hinged to one side of two clamping plates.

[0009] Preferably, the fixing mechanism further includes two movable plates slidably connected to the inner wall of the fixing cylinder. Each movable plate has multiple equally spaced slots on one side. Springs are fixedly connected to the top and bottom of each movable plate, and the other end of each spring is fixedly connected to the inner wall of the fixing cylinder. Under the action of the springs, the movable plates can move up and down when the slots are pressed, and return to their initial state after the slots are released.

[0010] Preferably, a fixing block is fixedly connected to the surface of the fixing cylinder, and a bidirectional lead screw is rotatably connected to the inner wall of the fixing block. Two fixing plates are threadedly connected to the surface of the bidirectional lead screw, and a fixing rod is fixedly connected to the other end of each fixing plate. The end of the fixing rod penetrates through the fixing cylinder. The two fixing rods move simultaneously into the fixing cylinder to press against the moving plate, ensuring the stability of the moving plate after the clamping plate and the clamping slot are engaged, thereby enhancing the stability of the support rod fixation.

[0011] Preferably, the surface of the other side of the card plate is curved into an arc shape, and the size of the card slot matches the size of the card plate. This reduces the resistance when the card plate enters the card slot.

[0012] Preferably, the opening of the card slot is funnel-shaped, and the center point of the card slot and the center point of the corresponding card plate are located on the same vertical plane. When the card plate and the card slot are misaligned, it helps the arc surface of the card plate to better press against the inclined surface at the opening of the card slot, ensuring that the card plate can smoothly enter the card slot.

[0013] Preferably, a motor is fixedly connected to the top of the base, and a screw is fixedly connected to the output shaft of the motor. A connecting plate is threaded onto the surface of the screw, and the ends of the connecting plate pass through multiple fixed cylinders and are fixedly connected to the surfaces of the support rods. This facilitates the simultaneous upward movement of the support plate by the four support rods, ensuring consistency during device operation.

[0014] Preferably, a slider is fixedly connected to the bottom end of the card plate, and the surface of the slider is slidably connected to the inner wall of the mounting cylinder. This ensures the stability of the card plate during movement.

[0015] The beneficial effects of this utility model are:

[0016] In the aforementioned fixing mechanism, the activation of the electric push rod facilitates the downward movement of the mounting plate and four moving rods, simultaneously driving the locking plates within the four support rods to engage with their corresponding slots. This improves the consistency of the fixing mechanism's operation. When the moving rods move downward, the action of the two connecting rods helps push the corresponding locking plates to move simultaneously towards their respective slots and complete the engagement. When the locking plates and slots are misaligned, the action of the curved surface of the locking plates and the inclined surface at the slot opening helps the locking plates press against the slots and push the moving plate upward or downward, thereby aligning the center point of the locking plates with the center point of the corresponding slots. This facilitates the smooth entry of the locking plates into the slots and the engagement, ensuring the fixing effect of the fixing mechanism on the support rods and enhancing the practicality of the device.

[0017] Rotating the bidirectional lead screw helps the two fixed plates move simultaneously into the fixed cylinder to press against the moving plate, ensuring the stability of the moving plate after the clamping plate engages with the clamping slot, thereby enhancing the stability of the support rod fixation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a sectional view of the mounting cylinder of this utility model;

[0020] Figure 3 This is a schematic diagram of the fixing mechanism structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the movable plate and mounting cylinder of this utility model;

[0022] Figure 5 for Figure 2 A magnified view of A in the middle.

[0023] In the diagram: 1. Base; 2. Support plate; 3. Fixing cylinder; 4. Support rod; 5. Fixing mechanism; 51. Electric push rod; 52. Mounting plate; 53. Moving rod; 54. Mounting cylinder; 55. Clamping plate; 56. Connecting rod; 57. Moving plate; 58. Slot; 59. Spring; 510. Fixing block; 511. Two-way lead screw; 512. Fixing plate; 513. Fixing rod; 6. Motor; 7. Screw; 8. Connecting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In practical implementation: such as Figure 1-5 As shown, an adjustable-height bridge support frame includes: a base 1 and a support plate 2. A fixed cylinder 3 is fixedly connected to each of the four corners of the top of the base 1. Support rods 4 are slidably connected to the inner wall of the fixed cylinder 3. The top ends of the four support rods 4 extend through the fixed cylinder 3 and are fixedly connected to the bottom of the support plate 2. A fixing mechanism 5 is provided inside the fixed cylinder 3. The fixing mechanism 5 includes an electric push rod 51 fixedly connected to the bottom of the support plate 2. A mounting plate 52 is fixedly connected to the telescopic end of the electric push rod 51. A moving rod 53 is slidably connected to the inner wall of the support rods 4. The ends of the mounting plate 52 extend through multiple support rods 4 and are fixedly connected to the surface of the moving rods 53. A mounting cylinder 54 is fixedly connected to the bottom of the support rods 4. A clamping plate 55 is slidably connected to the inner wall of the mounting cylinder 54. The bottom end of the moving rod 53 extends into the interior of the mounting cylinder 54 and is hinged to two connecting rods 56. The other ends of the two connecting rods 56 are respectively hinged to one side of two clamping plates 55.

[0026] In this embodiment, the overall shape of the mounting plate 52 is "H". When the electric push rod 51 is activated, the telescopic end of the electric push rod 51 will drive the four moving rods 53 to move downwards simultaneously through the mounting plate 52.

[0027] like Figure 3 and Figure 4 As shown, the fixing mechanism 5 also includes two movable plates 57 slidably connected to the inner wall of the fixing cylinder 3. Each movable plate 57 has multiple equally spaced slots 58 on one side. Springs 59 are fixedly connected to both the top and bottom ends of each movable plate 57, and the other end of each spring 59 is fixedly connected to the inner wall of the fixing cylinder 3. The surface of the other side of the locking plate 55 is curved into an arc shape, and the size of the slots 58 matches the size of the locking plates 55. The openings of the slots 58 are funnel-shaped, and the center point of the slots 58 and the center point of the corresponding locking plates 55 are located on the same vertical plane.

[0028] In this embodiment, when the device is in its initial state, the locking plate 55 is retracted inside the mounting cylinder 54, which does not affect the height adjustment of the support rod 4. When the moving rod 53 moves downward, it will push the included angle between the two connecting rods 56 to increase. Therefore, the other ends of the two connecting rods 56 will simultaneously push the two locking plates 55 away from each other. During the movement of the locking plate 55, the locking plate 55 will enter the corresponding locking groove 58. When the locking plate 55 is misaligned with the locking groove 58, the arc surface of the locking plate 55 will be squeezed against the inclined surface at the opening of the locking groove 58, and push the moving plate 57 to move upward or downward, so that the spring 59 at the top or bottom of the moving plate 57 is squeezed or pulled up, thereby allowing the locking plate 55 to smoothly enter the locking groove 58.

[0029] like Figure 5 As shown, a fixing block 510 is fixedly connected to the surface of the fixing cylinder 3, and a bidirectional screw 511 is rotatably connected to the inner wall of the fixing block 510. Two fixing plates 512 are threadedly connected to the surface of the bidirectional screw 511, and a fixing rod 513 is fixedly connected to the other end of the fixing plate 512. The end of the fixing rod 513 passes through the fixing cylinder 3.

[0030] In this embodiment, the overall shape of the fixing rod 513 is "U". The threads connecting the two fixing plates 512 and the bidirectional screw 511 are opposite. Therefore, when the bidirectional screw 511 is rotated, it will drive the two fixing plates 512 to move towards each other. When the height of the support rod 4 is adjusted, the end of the fixing rod 513 is away from the other side of the moving plate 57. After the locking plate 55 and the locking groove 58 are engaged, the bidirectional screw 511 can be rotated to drive the two fixing plates 512 to move into the fixing cylinder 3 at the same time, so that the two fixing rods 513 simultaneously press against the moving plate 57.

[0031] like Figure 1 and Figure 2 As shown, a motor 6 is fixedly connected to the top of the base 1, a screw 7 is fixedly connected to the output shaft of the motor 6, a connecting plate 8 is threaded onto the surface of the screw 7, and the ends of the connecting plate 8 pass through multiple fixed cylinders 3 and are fixedly connected to the surface of the support rod 4.

[0032] In this embodiment, when the device is used to support the bridge, the controller starts the motor 6, and the output shaft of the motor 6 drives the screw 7 to rotate, causing the connecting plate 8 to move upward. The overall shape of the connecting plate 8 is "I". Therefore, the connecting plate 8 will simultaneously drive the four support rods 4 to push the support plate 2 upward, adjust the height of the support plate 2, and enable the support plate 2 to support the bridge.

[0033] like Figure 4 As shown, a slider is fixedly connected to the bottom end of the card plate 55, and the surface of the slider is slidably connected to the inner wall of the mounting cylinder 54.

[0034] In this embodiment, the inner bottom wall of the mounting cylinder 54 is provided with a groove that matches the slider to limit the movement of the slider.

[0035] In use, the device is moved to the desired position, and the motor 6 is started by the controller to drive the screw 7 to rotate. This causes the connecting plate 8 to simultaneously drive the four support rods 4 to push the support plate 2 upward, thus supporting the bridge. After this operation is completed, the electric push rod 51 is started by the controller. The telescopic end of the electric push rod 51 will simultaneously drive the four moving rods 53 downward through the mounting plate 52. When the moving rods 53 move downward, they will increase the included angle between the two connecting rods 56. Therefore, the other ends of the two connecting rods 56 will simultaneously push the two clamping plates 55 away from each other. During the movement of the clamping plates 55, the clamping plates 55 will be clamped. 5 will enter the corresponding slot 58. When the card plate 55 is misaligned with the slot 58, the arc surface of the card plate 55 will be squeezed against the inclined surface at the opening of the slot 58, and push the moving plate 57 to move up or down, so that the spring 59 at the top or bottom of the moving plate 57 is squeezed or pulled up, so that the card plate 55 can smoothly enter the slot 58 to complete the locking and fix the support rod 4. At the same time, rotating the bidirectional screw 511 causes the two fixed plates 512 to move into the fixed cylinder 3 at the same time, so that the two fixed rods 513 simultaneously press against the moving plate 57, thereby ensuring the stability of the card plate 55 when it is locked with the slot 58.

[0036] It should be noted that the motor 6 and electric actuator 51 mentioned above are devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the motor 6 and electric actuator 51 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A height-adjustable bridge support frame, characterized in that, include: The base (1) and the support plate (2) are provided. The four corners of the top of the base (1) are fixedly connected to the fixing cylinder (3). The inner wall of the fixing cylinder (3) is slidably connected to the support rod (4). The tops of the four support rods (4) pass through the fixing cylinder (3) and are fixedly connected to the bottom of the support plate (2). The fixing cylinder (3) is provided with a fixing mechanism (5). The fixing mechanism (5) includes an electric push rod (51) fixedly connected to the bottom end of the support plate (2). The telescopic end of the electric push rod (51) is fixedly connected to an mounting plate (52). The inner wall of the support rod (4) is slidably connected to a moving rod (53). The end of the mounting plate (52) passes through multiple support rods (4) and is fixedly connected to the surface of the moving rod (53). The bottom end of the support rod (4) is fixedly connected to an mounting cylinder (54). The inner wall of the mounting cylinder (54) is slidably connected to a clamping plate (55). The bottom end of the moving rod (53) passes through the interior of the mounting cylinder (54) and is hinged to two connecting rods (56). The other ends of the two connecting rods (56) are respectively hinged to one side of the two clamping plates (55).

2. The adjustable-height bridge support frame according to claim 1, characterized in that: The fixing mechanism (5) also includes two movable plates (57) that are slidably connected to the inner wall of the fixing cylinder (3). A plurality of slots (58) are provided on one side of the movable plate (57) in an equal row. Springs (59) are fixedly connected to the top and bottom of the movable plate (57). The other end of the springs (59) is fixedly connected to the inner wall of the fixing cylinder (3).

3. The adjustable-height bridge support frame according to claim 1, characterized in that: A fixing block (510) is fixedly connected to the surface of the fixing cylinder (3). A two-way screw rod (511) is rotatably connected to the inner wall of the fixing block (510). Two fixing plates (512) are threadedly connected to the surface of the two-way screw rod (511). A fixing rod (513) is fixedly connected to the other end of the fixing plate (512). The end of the fixing rod (513) passes through the fixing cylinder (3).

4. The adjustable-height bridge support frame according to claim 2, characterized in that: The surface on the other side of the card plate (55) is curved into an arc shape, and the size of the card slot (58) matches the size of the card plate (55).

5. The adjustable-height bridge support frame according to claim 2, characterized in that: The opening of the card slot (58) is funnel-shaped, and the center point of the card slot (58) and the center point of the corresponding card plate (55) are located on the same vertical plane.

6. The adjustable-height bridge support frame according to claim 1, characterized in that: A motor (6) is fixedly connected to the top of the base (1), and a screw (7) is fixedly connected to the output shaft of the motor (6). A connecting plate (8) is threadedly connected to the surface of the screw (7). The ends of the connecting plate (8) pass through multiple fixed cylinders (3) and are fixedly connected to the surface of the support rod (4).

7. The adjustable-height bridge support frame according to claim 1, characterized in that: The bottom end of the card plate (55) is fixedly connected to a slider, and the surface of the slider is slidably connected to the inner wall of the mounting cylinder (54).

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