Jacking reaction frame for bridge maintenance

Abstract

The utility model is applicable to the technical field of bridge maintenance, and provides a bridge maintenance jacking reaction frame which comprises a frame body, fixing cylinders are connected to the positions, close to the centers of the left side and the right side, of the inner wall of the bottom of the frame body, and guide rods are jointly connected to the positions, close to the centers of the left side and the right side, of the inner walls of the upper side and the lower side of the two fixing cylinders. The height of the jack is adjusted by driving the connecting seat to move upwards, so that the height of the jack can be rapidly adjusted, the counter-force frame can rapidly support bridges with different heights, actual use is facilitated, and two buffer springs are driven to extend downwards to stretch and unload the two buffer springs, so that the service life of the counter-force frame is prolonged, and the service life of the counter-force frame is prolonged. Therefore, the internal structure of the reaction frame is protected, the situation that the interior of the reaction frame is stressed and abraded due to the fact that the reaction frame is suddenly removed and a certain reaction force is possibly generated on a bridge floor is avoided, and the service life of the reaction frame is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge maintenance, and particularly relates to a bridge maintenance jacking reaction frame. Background Art

[0002] With the rapid development of China's economy, the construction of highways and urban roads has been particularly rapid. However, during the economic development process, the load-bearing ratio of vehicles has been increasing, which has a more and more serious impact on bridges. During the maintenance of bridges, a jacking reaction frame is usually used to support the bridge to facilitate the staff to carry out the work of placing pads and driving piles on the bridge piers.

[0003] The lifting operation of the traditional bridge maintenance jacking reaction frame is relatively cumbersome, so that the height adjustment operation of the jack cannot be completed quickly, which is not conducive to actual use. Moreover, when the traditional bridge maintenance jacking reaction frame is removed, the bridge above may suddenly have a reaction force of rebound, which is likely to cause damage to the internal structure of the reaction frame and reduce the service life of the reaction frame. Summary of the Utility Model

[0004] The utility model provides a bridge maintenance jacking reaction frame, aiming at solving the problems that the lifting operation of the existing bridge maintenance jacking reaction frame is relatively cumbersome and the internal structure of the reaction frame cannot be protected.

[0005] The utility model is realized as follows: A bridge maintenance jacking reaction frame includes a frame body. Fixing cylinders are respectively connected to the inner walls of the bottom of the frame body near the centers of the left and right sides. Guide rods are commonly connected to the inner walls of the upper and lower sides of the two fixing cylinders near the centers of the left and right sides. Guide disks are commonly sleeved on adjacent two guide rods near the bottom ends. Struts are respectively connected to the tops of the two guide disks near the centers. Circular holes are respectively opened at the tops of the two fixing cylinders near the centers. The top ends of the two struts penetrate the inner cavities of the circular holes and are commonly connected to a support plate. A top rod is connected to the top of the support plate near the center. An activity hole is opened at the top of the frame body near the center. The top end of the top rod penetrates the inner cavity of the activity hole and is connected to a connection seat. A jack is arranged in the inner cavity of the connection seat. A through hole is opened at the top of the connection seat near the center. The jack is located inside the through hole near the top, and the top end of the jack is connected to a bearing plate. A lifting assembly is arranged at the bottom of the support plate; the lifting assembly includes a threaded rod located at the bottom of the support plate near the center. A rotating shaft is connected to the bottom end of the threaded rod near the center, and the bottom end of the rotating shaft is movably connected to the inner wall of the bottom of the frame body near the center.

[0006] Preferably, a driving plate is sleeved near the bottom end of the threaded rod. A driving hole is formed near the center of the inner cavity of the driving plate. Internal threads matching the threaded rod are formed on the inner wall of the driving hole. Connecting rods are connected to the top of the driving plate near the centers of the left and right sides. The tops of the two connecting rods are respectively connected to the bottom of the support plate near the centers of the left and right sides. A driven bevel gear is connected near the bottom end of the rotating shaft. The bottom of the driven bevel gear is movably connected to the inner wall of the bottom of the frame near the center. There is a driving bevel gear on the upper right side of the driven bevel gear. The driving bevel gear and the driven bevel gear are meshed with each other. There is a driving motor on the right side of the driving bevel gear. The bottom of the driving motor is connected to the inner wall of the bottom of the frame near the center of the right side. The left end of the power output shaft of the driving motor is connected to the right side near the center of the driving bevel gear.

[0007] Preferably, two rotating rods are provided near the top of the left and right sides of the threaded rod. The front and rear ends of two adjacent rotating rods are respectively movably connected to the inner walls of the front and rear sides of the frame near the top of the left and right sides. Grooved pulleys are connected near the centers of two adjacent rotating rods. A belt is provided on two adjacent grooved pulleys. The two adjacent grooved pulleys are connected by the adjacent belt in a transmission manner. Limiting plates are connected to the adjacent sides of the two belts near the bottom. The adjacent sides of the two limiting plates are respectively connected to the left and right sides of the support plate near the center.

[0008] Preferably, buffer springs are sleeved near the bottom ends of the two abutting rods. The tops of the two buffer springs are respectively connected to the inner walls of the tops of the adjacent fixed cylinders near the center. The bottoms of the two buffer springs are respectively connected to the tops of the adjacent guide disks near the center.

[0009] Preferably, there are two clamping plates near the center of the inner cavity of the connecting seat. The two clamping plates are symmetrically arranged left and right with the center of the inner cavity of the connecting seat as the axis of symmetry. Arc-shaped clamping grooves are formed near the centers of the adjacent sides of the two clamping plates. Electric telescopic rods are provided on the sides of the two clamping plates away from the center of the inner cavity of the connecting seat. The adjacent ends of the two electric telescopic rods are respectively connected to the sides of the adjacent clamping plates away from the center of the inner cavity of the connecting seat near the center.

[0010] Preferably, grooves are formed near the centers of the left and right sides of the inner cavity of the connecting seat. The ends of the two electric telescopic rods away from the center of the inner cavity of the connecting seat are respectively connected to the inner walls of the adjacent grooves away from the center of the inner cavity of the connecting seat near the center.

[0011] Preferably, a plurality of legs are connected to the bottom of the frame. The plurality of legs are arranged in a rectangular array with the center of the inner cavity of the frame as the axis of symmetry.

[0012] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0013] The height of the jack is adjusted by driving the connecting seat to move upward, so that the height of the jack can be adjusted quickly, enabling the reaction frame to support bridges of different heights quickly, which is beneficial for actual use. And by driving the two buffer springs to extend downward to stretch and unload the two buffer springs, the internal structure of the reaction frame is protected, avoiding the situation that due to suddenly removing the reaction frame, a certain reaction force may be generated on the bridge deck, resulting in wear of the internal force of the reaction frame, thereby increasing the service life of the reaction frame. Brief Description of the Drawings

[0014] Figure 1 is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 is the overall three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 3 is the Figure 1 enlarged view of part A in the present utility model;

[0017] Figure 4 is the partial bottom view structural schematic diagram of the component connecting seat of the present utility model.

[0018] In the figure: 1, frame body; 2, fixed cylinder; 3, lifting assembly; 31, threaded rod; 32, connecting rod; 33, limiting plate; 34, belt; 35, grooved wheel; 36, rotating rod; 37, driving motor; 38, driving bevel gear; 39, rotating shaft; 310, driven bevel gear; 311, driving plate; 4, connecting seat; 5, electric telescopic rod; 6, clamping plate; 7, jack; 8, bearing plate; 9, ejector rod; 10, support plate; 11, buffer spring; 12, abutting rod; 13, leg; 14, guide rod; 15, guide disk. Detailed Description of the Embodiment

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0020] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] An embodiment of the present utility model provides a bridge maintenance jacking reaction frame, as Figures 1-4 shown, which includes a frame body 1. Fixed cylinders 2 are connected to the inner walls of the bottom of the frame body 1 near the centers of the left and right sides. Guide rods 14 are commonly connected to the inner walls of the upper and lower sides of the two fixed cylinders 2 near the centers of the left and right sides. Guide discs 15 are commonly sleeved on adjacent guide rods 14 near the bottom ends. Push rods 12 are connected to the tops of the two guide discs 15 near the centers. Circular holes are formed in the tops of the two fixed cylinders 2 near the centers. The top ends of the two push rods 12 penetrate the inner cavities of the circular holes and are commonly connected to a support plate 10. A jacking rod 9 is connected to the top of the support plate 10 near the center. An activity hole is formed in the top of the frame body 1 near the center. The top end of the jacking rod 9 penetrates the inner cavity of the activity hole and is connected to a connection seat 4. A jack 7 is located in the inner cavity of the connection seat 4. A through hole is formed in the top of the connection seat 4 near the center. The jack 7 is located inside the through hole near the top, and the top end of the jack 7 is connected to a bearing plate 8. A lifting assembly 3 is provided at the bottom of the support plate 10; the lifting assembly 3 includes a threaded rod 31 located at the bottom of the support plate 10 near the center. A rotating shaft 39 is connected to the bottom end of the threaded rod 31 near the center, and the bottom end of the rotating shaft 39 is movably connected to the inner wall of the bottom of the frame body 1 near the center.

[0022] It should be noted that since the lifting operation of the existing bridge maintenance jacking reaction frame is relatively cumbersome and the internal structure of the reaction frame cannot be protected, therefore, in order to solve the problems that occur during the use of the existing bridge maintenance jacking reaction frame, this solution solves the problems that the lifting operation of the existing bridge maintenance jacking reaction frame is relatively cumbersome and the internal structure of the reaction frame cannot be protected by adding a lifting assembly 3 in the inner cavity of the frame body 1 and the coordinated use of various components inside the two fixed cylinders 2.

[0023] In a further preferred embodiment of the present utility model, as Figure 1 、 2As shown in FIGS. 3 and 4, a drive plate 311 is sleeved on the threaded rod 31 near the bottom end. A drive hole is provided near the center of the inner cavity of the drive plate 311. Internal threads matching the threaded rod 31 are provided on the inner wall of the drive hole. Connecting rods 32 are connected to the top of the drive plate 311 near the centers of the left and right sides. The tops of the two connecting rods 32 are respectively connected to the bottom of the support plate 10 near the centers of the left and right sides. A driven bevel gear 310 is connected to the threaded rod 31 near the bottom end of the rotating shaft 39. The bottom of the driven bevel gear 310 is movably connected to the inner wall of the bottom of the frame body 1 near the center. There is a driving bevel gear 38 on the right side of the top of the driven bevel gear 310. The driving bevel gear 38 meshes with the driven bevel gear 310. There is a driving motor 37 on the right side of the driving bevel gear 38. The bottom of the driving motor 37 is connected to the inner wall of the bottom of the frame body 1 near the center of the right side. The left end of the power output shaft of the driving motor 37 is connected to the right side of the driving bevel gear 38 near the center.

[0024] In this embodiment, when the bridge maintenance jacking reaction frame is to be used to support a bridge, first, the staff installs the jack 7 into the connection seat 4. Then, the staff starts the driving motor 37 through an external power source, so that the driving motor 37 drives the driving bevel gear 38 to rotate forward when powered on. When the driving bevel gear 38 rotates, it meshes with the driven bevel gear 310, so as to drive the driven bevel gear 310 to rotate forward, facilitating the driven bevel gear 310 to quickly drive the threaded rod 31 to rotate forward through the rotating shaft 39. When the threaded rod 31 rotates forward, it can drive the drive plate 311 to move upward, so that the drive plate 311 can jointly push the support plate 10 upward through the two connecting rods 32. When the support plate 10 moves upward, it can push the ejector rod 9 out of the frame body 1. When the ejector rod 9 moves upward, it can drive the connection seat 4 to move upward. When the connection seat 4 moves upward, it can drive the jack 7 to move upward, thereby quickly adjusting the height of the jack 7, enabling the reaction frame to quickly support bridges of different heights. When the height of the jack 7 is adjusted, at this time, the staff starts the jack 7 through an external power source, so that the jack 7 can drive the bearing plate 8 to move upward to support the bridge, facilitating the staff to carry out work such as padding and pile driving on the bridge pier.

[0025] In a further preferred embodiment of the present invention, as Figure 1As shown in the figure, two rotating rods 36 are provided on both the left and right sides of the threaded rod 31 near the top. The front and rear ends of the adjacent two rotating rods 36 are respectively movably connected to the inner walls of the front and rear sides of the frame body 1 near the left and right sides at the top. Grooved pulleys 35 are connected near the centers of the adjacent two rotating rods 36. A belt 34 is commonly provided on the adjacent two grooved pulleys 35, and the adjacent two grooved pulleys 35 are drivingly connected through the adjacent belt 34. Limiting plates 33 are connected to the adjacent sides of the two belts 34 near the bottom, and the adjacent sides of the two limiting plates 33 are respectively connected to the left and right sides of the support plate 10 near the center.

[0026] In this embodiment, when the support plate 10 moves upward, it can drive the two limiting plates 33 to move upward. When the two limiting plates 33 move upward, they can drive the left belt 34 to roll in the reverse direction and the right belt 34 to roll in the forward direction. When the two belts 34 roll in different directions, they can drive the adjacent two grooved pulleys 35 to rotate in different directions, so as to be able to limit the positions of the two belts 34, enabling the two belts 34 to roll smoothly, thereby limiting the positions of the two limiting plates 33, enabling the two limiting plates 33 to move upward smoothly, and further enabling the two limiting plates 33 to be able to limit the position of the support plate 10, enabling the support plate 10 to move upward smoothly.

[0027] In a further preferred embodiment of the present utility model, as Figure 1 and 3 shown in the figure, buffer springs 11 are sleeved on both the left and right sides of the two abutting rods 12 near the bottom ends. The top ends of the two buffer springs 11 are respectively connected to the inner walls of the tops of the adjacent fixed cylinders 2 near the center, and the bottom ends of the two buffer springs 11 are respectively connected to the tops of the adjacent guide discs 15 near the center.

[0028] In this embodiment, for this bridge maintenance jacking reaction frame, after the maintenance is completed, the staff pulls the jacking rod 9 back into the frame body 1. When the jacking rod 9 moves downward, it can drive the support plate 10 to move downward. When the support plate 10 moves downward, it can push the two abutting rods 12 into the two fixed cylinders 2. When the two abutting rods 12 move into the two fixed cylinders 2, they can drive the two guide discs 15 to slide downward on the adjacent two guide rods 14, so as to be able to limit the positions of the two abutting rods 12, enabling the two abutting rods 12 to move smoothly into the two fixed cylinders 2, and further enabling the two abutting rods 12 to be able to smoothly drive the two buffer springs 11 to extend downward to stretch and unload the two buffer springs 11, thereby protecting the internal structure of the reaction frame and avoiding the problem that due to suddenly removing the reaction frame, the bridge deck may generate a certain reaction force, resulting in wear of the internal force of the reaction frame, thus increasing the service life of the reaction frame.

[0029] In a further preferred embodiment of the present utility model, asFigure 1 and 4 As shown in 4 , there are two clamping plates 6 near the center of the inner cavity of the connecting seat 4. The two clamping plates 6 are symmetrically arranged left and right with the center of the inner cavity of the connecting seat 4 as the axis of symmetry. And arc-shaped clamping grooves are provided near the center on the adjacent sides of the two clamping plates 6. Electric telescopic rods 5 are provided on the sides of the two clamping plates 6 away from the center of the inner cavity of the connecting seat 4. And the adjacent ends of the two electric telescopic rods 5 are respectively connected to the sides near the center on the sides of the adjacent clamping plates 6 away from the center of the inner cavity of the connecting seat 4.

[0030] In this embodiment, when the staff places the jack 7 inside the connecting seat 4, at this time, the staff starts the two electric telescopic rods 5 through an external power supply. The two electric telescopic rods 5 start to extend out under the energized state, so as to drive the two clamping plates 6 to close, so that the inner walls of the two arc-shaped clamping grooves can quickly contact the side wall of the jack 7, so that the jack 7 can be quickly fixed inside the connecting seat 4 for use.

[0031] In a further preferred embodiment of the present utility model, as Figure 1 and 4 shown, grooves are provided near the center on the left and right sides of the inner cavity of the connecting seat 4. The ends of the two electric telescopic rods 5 away from the center of the inner cavity of the connecting seat 4 are respectively connected to the sides near the center on the inner wall of the adjacent grooves away from the center of the inner cavity of the connecting seat 4.

[0032] In this embodiment, by connecting the two electric telescopic rods 5 inside the grooves, the positions of the two electric telescopic rods 5 can be limited, so that the two electric telescopic rods 5 can work stably.

[0033] In a further preferred embodiment of the present utility model, as Figure 1 and 2 shown, a plurality of legs 13 are connected to the bottom of the frame body 1, and the plurality of legs 13 are arranged in a rectangular array with the center of the inner cavity of the frame body 1 as the axis of symmetry.

[0034] In this embodiment, by connecting four legs 13 to the bottom of the frame body 1, the reaction frame can be stably placed on the ground for use through the four legs 13.

[0035] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0036] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections between devices or units can be in the form of telecommunications or other forms.

[0037] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present invention according to the situation or make other adjustments, so as to obtain different technical solutions that essentially do not depart from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A bridge maintenance jacking reaction frame, characterized in that, It includes a frame body (1). Fixed cylinders (2) are connected to the inner walls of the bottom of the frame body (1) near the centers of the left and right sides. Guide rods (14) are commonly connected to the inner walls of the upper and lower sides of the two fixed cylinders (2) near the centers of the left and right sides. Guide discs (15) are commonly sleeved on the adjacent two guide rods (14) near the bottom ends. Resistance rods (12) are connected to the tops of the two guide discs (15) near the centers. Circular holes are opened at the tops of the two fixed cylinders (2) near the centers. The top ends of the two resistance rods (12) penetrate the inner cavities of the circular holes and are commonly connected to a support plate (10). A top rod (9) is connected to the top of the support plate (10) near the center. An activity hole is opened at the top of the frame body (1) near the center. The top end of the top rod (9) penetrates the inner cavity of the activity hole and is connected to a connection seat (4). A jack (7) is in the inner cavity of the connection seat (4). A through hole is opened at the top of the connection seat (4) near the center. The jack (7) is located inside the through hole near the top, and the top end of the jack (7) is connected to a bearing plate (8). There is a lifting component (3) at the bottom of the support plate (10); The lifting component (3) includes a threaded rod (31) at the bottom of the support plate (10) near the center. A rotating shaft (39) is connected to the bottom end of the threaded rod (31) near the center, and the bottom end of the rotating shaft (39) is movably connected to the inner wall of the bottom of the frame body (1) near the center.

2. The bridge maintenance jacking reaction frame according to claim 1, wherein A driving plate (311) is sleeved on the threaded rod (31) near the bottom end. A driving hole is opened at the center of the inner cavity of the driving plate (311). Internal threads matching the threaded rod (31) are opened on the inner wall of the driving hole. Connecting rods (32) are connected to the tops of the driving plate (311) near the centers of the left and right sides, and the top ends of the two connecting rods (32) are respectively connected to the bottom of the support plate (10) near the centers of the left and right sides. A driven bevel gear (310) is connected to the rotating shaft (39) near the bottom end, and the bottom of the driven bevel gear (310) is movably connected to the inner wall of the bottom of the frame body (1) near the center. There is a driving bevel gear (38) on the right side of the top of the driven bevel gear (310), and the driving bevel gear (38) meshes with the driven bevel gear (310). There is a driving motor (37) on the right side of the driving bevel gear (38). The bottom of the driving motor (37) is connected to the inner wall of the bottom of the frame body (1) near the center of the right side, and the left end of the power output shaft of the driving motor (37) is connected to the right side of the driving bevel gear (38) near the center.

3. The bridge maintenance jacking reaction frame according to claim 2, wherein On both the left and right sides of the threaded rod (31) near the top, there are two rotating rods (36). The front and rear ends of two adjacent rotating rods (36) are respectively movably connected to the inner walls of the front and rear sides of the frame body (1) near the left and right sides at the top. Near the center of two adjacent rotating rods (36), there are sprocket wheels (35) connected. On two adjacent sprocket wheels (35), there is a common belt (34), and two adjacent sprocket wheels (35) are connected by the adjacent belt (34) for transmission. On the adjacent sides of two belts (34) near the bottom, there are limit plates (33) connected, and the adjacent sides of two limit plates (33) are respectively connected to the left and right sides near the center of the support plate (10).

4. The jacking reaction frame for bridge maintenance according to claim 1, characterized in that, On the near-bottom ends of two abutting rods (12), there are buffer springs (11) sleeved. The top ends of two buffer springs (11) are respectively connected to the inner wall of the top of the adjacent fixed cylinder (2) near the center, and the bottom ends of two buffer springs (11) are respectively connected to the top of the adjacent guide disc (15) near the center.

5. The jacking reaction frame for bridge maintenance according to claim 1, wherein, There are two clamping plates (6) near the center of the inner cavity of the connecting seat (4). The two clamping plates (6) are symmetrically arranged left and right with the center of the inner cavity of the connecting seat (4) as the axis of symmetry. On the adjacent sides of two clamping plates (6) near the center, there are arc-shaped clamping grooves opened. On the sides of two clamping plates (6) away from the center of the inner cavity of the connecting seat (4), there are electric telescopic rods (5), and the adjacent ends of two electric telescopic rods (5) are respectively connected to the sides of the adjacent clamping plates (6) away from the center of the inner cavity of the connecting seat (4) near the center.

6. The bridge maintenance jacking reaction frame according to claim 5, characterized in that On the left and right sides of the inner cavity of the connecting seat (4) near the center, there are grooves opened. The ends of two electric telescopic rods (5) away from the center of the inner cavity of the connecting seat (4) are respectively connected to the inner walls of the adjacent grooves away from the center of the inner cavity of the connecting seat (4) near the center.

7. The reaction frame for bridge maintenance jacking as claimed in claim 1, wherein The bottom of the frame body (1) is connected with a plurality of support legs (13), and the plurality of support legs (13) are arranged in a rectangular array with the center of the inner cavity of the frame body (1) as the axis of symmetry.

Images