Prestress tensioning machine for tensioning T-shaped beam

Abstract

The utility model discloses a prestress tensioning machine for tensioning a T beam, and belongs to the field of bridge construction. The utility model discloses a prestress tensioning machine for tensioning a T-beam. The prestress tensioning machine comprises a rack; the prestress tensioning machine for tensioning the T-shaped beam further comprises a clamping set and a tensioning set, wherein the clamping set is arranged on the rack; the driving group is arranged on the rack and is used for driving the clamping group to move; the guiding set is arranged on the rack, and the clamping set is located between the guiding set and the driving set; the center of the guiding set and the center of the clamping set are overlapped front and back. The prestress tensioning machine for tensioning the T-shaped beam has the beneficial effect that the tensioning stability of the steel cable is improved through the guiding sets.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a prestressed tensioning machine for tensioning T-beams. Background Art

[0002] A "T-beam" is a beam with a cross-section that resembles the letter "T," hence the name. This type of beam is very common in bridges and other building structures, primarily used to carry and transfer loads.

[0003] The design of the T-beam enables it to effectively distribute weight and pressure, thereby enhancing the overall stability and durability of the structure. In bridges, T-beams often serve as the supporting part of the bridge deck structure, capable of bearing the weight of vehicles and pedestrians, as well as the impact of wind and other external factors.

[0004] Among them, T-beam tensioning is a key step in the construction of prestressed concrete bridges. Currently, prestressed tensioning machines are usually used to tension T-beams.

[0005] The current prestressed tensioning machine tightens the steel cable passing through the T-beam after clamping it. However, there is a certain deviation when the position of the steel cable passing through the T-beam is aligned with the position where the prestressed tensioning machine clamps and fixes the steel cable, causing the steel cable passing through the T-beam to tilt. The tilt of the steel cable will cause uneven force on the steel cable when it is pulled closer, resulting in poor tensioning effect. Utility Model Content

[0006] The present invention aims to provide a prestressed tensioning machine for tensioning T-beams. The present invention can ensure that the point where the steel cable exits the guide group and the point where the clamping group clamps the steel cable are aligned and overlapped, by setting a guide group, thereby straightening the steel cable and improving the stability of the steel cable tensioning.

[0007] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0008] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a prestressing tensioning machine for tensioning T-beams, comprising:

[0009] frame;

[0010] The prestressing tensioning machine used for tensioning T-beams also includes:

[0011] The clamping group is provided on the frame;

[0012] The driving group is arranged on the frame and is used to drive the clamping group to move;

[0013] The guide group is installed on the frame, and the clamping group is located between the guide group and the driving group;

[0014] The center of the guide group and the center of the clamping group overlap front and back.

[0015] Furthermore, the guidance group includes:

[0016] A sliding plate is slidably arranged on the frame;

[0017] A guide sleeve having a guide hole is provided on the sliding plate and is located at the front end of the clamping group;

[0018] The pressing piece is threadedly connected to the sliding plate and is used to fix the sliding plate.

[0019] Furthermore, the guide sleeve is fixed to the sliding plate by screws.

[0020] Furthermore, the driver group includes:

[0021] A hydraulic cylinder is mounted on the frame;

[0022] A hydraulic rod is slidably disposed in the hydraulic cylinder;

[0023] Wherein, the clamping group is arranged on the hydraulic rod.

[0024] Furthermore, the clamping group comprises:

[0025] An insert sleeve having a socket and fixed to the hydraulic rod;

[0026] A first clamping block is slidably disposed in the insertion sleeve;

[0027] a second clamping block fixed in the insert sleeve and located below the first clamping block;

[0028] The pressure piece is rotatably mounted on the first clamping block and is threadedly connected to the inserting sleeve.

[0029] Furthermore, the machine frame is mounted on a workbench, and the workbench includes:

[0030] First slide rail;

[0031] The platform is slidably mounted on the first slide rail via a pulley;

[0032] The second slide rail is provided on the platform and is perpendicular to the first slide rail in the horizontal direction;

[0033] The lifting platform is arranged on the second sliding rail, and the frame is arranged on the lifting platform.

[0034] Furthermore, a buffer group is provided between the frame and the lifting platform.

[0035] Furthermore, the buffer group includes:

[0036] The sliding barrel is installed on the lifting platform;

[0037] A slide rod is provided in the slide barrel for sliding up and down;

[0038] The spring has two ends respectively fixed on the frame and the lifting platform.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. By setting the guide group, the front end of the steel cable is guided to ensure that the front and rear ends of the steel cable from the guide group to the clamping group are overlapped, which improves the stability of the steel cable when it is tightened and tightens the steel cable evenly with tension.

[0041] 2. Adjust the position of the clamping group through the first slide rail, the second slide rail and the lifting platform so that the clamping group is aligned with the T-beam cable outlet to improve the stability when the cable is tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0043] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0044] In the attached figure:

[0045] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0046] Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing the workbench structure;

[0047] Figure 3 yes Figure 1 A magnified view of part A;

[0048] Figure 4 yes Figure 1 A magnified view of part B;

[0049] Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the clamping group structure.

[0050] Reference numerals:

[0051] 100. Prestressing tensioning machine for tensioning T-beams;

[0052] 101, workbench; 101a, first slide rail; 101b, platform; 101c, second slide rail; 101d, lifting platform; 101e, buffer group; 101f, pulley; 101g, slide barrel; 101h, slide rod; 101i, spring;

[0053] 102, rack;

[0054] 103, clamping group; 103a, insert sleeve; 103b, first clamping block; 103c, second clamping block; 103d, pressure member;

[0055] 104, driving group; 104a, hydraulic cylinder; 104b, hydraulic rod;

[0056] 105, guide group; 105a, sliding plate; 105b, guide sleeve; 105c, pressing member; 105d, guide hole. DETAILED DESCRIPTION

[0057] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0058] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0059] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0060] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0061] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0062] Reference Figure 1-5A prestressed tensioning machine 100 for tensioning a T-beam includes: a workbench 101, a frame 102, a clamping group 103, a driving group 104, and a guide group 105; the frame 102 is arranged on the workbench 101; the clamping group 103 is arranged on the frame 102; the driving group 104 is arranged on the frame 102; the guide group 105 is arranged on the frame 102; the clamping group 103 is located between the guide group 105 and the driving group 104; the steel cable passing through the T-beam passes through the guide group 105 and is clamped and fixed by the clamping group 103; the center of the guide group 105 overlaps with the center of the clamping group 103 front and back.

[0063] When prestressing the T-beam, the operator passes the steel cable through the lower end of the T-beam, fixes the steel cable at one end of the T-beam, and then passes the other end of the steel cable through the guide group 105. The steel cable passing through the guide group 105 is then inserted into the clamping group 103. The clamping group 103 clamps and fixes the steel cable, and then starts the driving group 104 to drive the clamping group 103 to move away from the T-beam, tightening the steel cable, giving the T-beam an upward supporting force. Even if the T-beam bends downward and settles during later use, the tightened steel cable can offset part of the downward bending force of the T-beam, greatly reducing the degree of downward bending of the T-beam and extending its service life.

[0064] When the position of the clamping steel cable of the clamping group 103 does not completely overlap with the position where the steel cable passes through the T-beam, resulting in the steel cable portion from the T-beam outlet to the clamping group 103 being in an inclined state, tightening the steel cable will cause uneven dispersion of the tension on the steel cable, reducing the tension on the entire steel cable. However, through the setting of the guide group 105, the front end of the steel cable is guided, which can ensure that the front and rear ends of the steel cable passing from the guide group 105 to the clamping group 103 are overlapped, thereby improving the stability of the steel cable when tightened and tightening the steel cable with uniform tension.

[0065] The workbench 101 includes: a first slide rail 101a, a platform 101b, a second slide rail 101c, a lifting platform 101d, and a buffer group 101e; the platform 101b is slidably arranged on the first slide rail 101a through a pulley 101f; the second slide rail 101c is fixed on the platform 101b; the lifting platform 101d is slidably arranged on the second slide rail 101c through the pulley 101f; the first slide rail 101a and the second slide rail 101c are perpendicular to each other in the horizontal plane, so that the frame 102 can slide forward, backward, left and right to adjust its position to adapt to the position of the steel cable on the T-beam; the lifting platform 101d is fixed on the platform 101b; the buffer group 101e is arranged on the lifting platform 101d, connecting the lifting platform 101d and the frame 102.

[0066] The position of the clamping group 103 is adjusted by the first slide rail 101a, the second slide rail 101c and the lifting platform 101d so that the clamping group 103 is aligned with the T-beam cable outlet, thereby improving the stability when the cable is tightened.

[0067] The buffer group 101e includes: a sliding barrel 101g, a sliding rod 101h, and a spring 101i; the sliding barrel 101g is vertically fixed on the platform 101b, and has multiple parts located around the platform 101b; the sliding rod 101h slides up and down inside the sliding barrel 101g, and the sliding rod 101h is fixedly connected to the frame 102; the spring 101i is sleeved outside the sliding rod 101h, and the upper and lower ends of the spring 101i are respectively fixed on the frame 102 and the lifting platform 101d; the spring 101i is used to reduce the impact between the frame 102 and the lifting platform 101d when the workbench 101 slides to adjust its position.

[0068] The guide group 105 includes: a sliding plate 105a, a guide sleeve 105b, and a clamping member 105c; the sliding plate 105a is slidably arranged on the frame 102; the guide sleeve 105b is detachably fixed to the sliding plate 105a by screws, and the guide sleeve 105b has a guide hole 105d for the steel cable to pass through; the clamping member 105c is a bolt, which is threadedly connected to the sliding plate 105a, and one end of the clamping member 105c abuts against the frame 102 to fix the sliding plate 105a.

[0069] The driving group 104 includes a hydraulic cylinder 104a and a hydraulic rod 104b. The hydraulic cylinder 104a is fixed on the frame 102. The hydraulic rod 104b is slidably disposed in the hydraulic cylinder 104a. The clamping group 103 is fixed on the hydraulic rod 104b.

[0070] The clamping group 103 includes: an insertion sleeve 103a, a first clamping block 103b, a second clamping block 103c, and a pressure piece 103d; the insertion sleeve 103a is fixed on the hydraulic rod 104b, and has a socket on the insertion sleeve 103a; the first clamping block 103b is slid up and down on the insertion sleeve 103a, and is partially located in the socket; the second clamping block 103c is fixed on the insertion sleeve 103a and is located in the socket. The second clamping block 103c is located below the first clamping block 103b and cooperates with the first clamping block 103b to clamp and fix the steel cable; the pressure piece 103d adopts a bolt, the lower end of the pressure piece 103d is rotatably connected to the first clamping block 103b, and the pressure piece 103d is threadedly connected to the insertion sleeve 103a.

[0071] The steel cable passes through the guide hole 105d and is inserted into the insertion sleeve 103a. The rotating pressure piece 103d drives the first clamping block 103b to move downward, and cooperates with the second clamping block 103c to clamp and fix one end of the steel cable. Then, the hydraulic cylinder 104a is filled with fluid, driving the hydraulic rod 104b to move away from the T-beam, tightening the steel cable.

[0072] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A prestressing tensioning machine for tensioning a T-beam, comprising: Rack(102); Its characteristics are: The prestressed tensioning machine for tensioning the T-beam also includes: A clamping group (103) is provided on the frame (102); A driving group (104), provided on the frame (102), for driving the clamping group (103) to move; A guide group (105) is provided on the frame (102), and a clamping group (103) is located between the guide group (105) and the driving group (104); the center of the guide group (105) and the center of the clamping group (103) overlap front and back; The guide group (105) includes: A sliding plate (105a) is slidably mounted on the frame (102); A guide sleeve (105b) having a guide hole (105d) is provided on the sliding plate (105a) and is located at the front end of the clamping group (103); A pressing member (105c) is threadedly connected to the sliding plate (105a) and is used to fix the sliding plate (105a).

2. The prestressed tensioning machine for tensioning T-beams according to claim 1, characterized in that: The guide sleeve (105b) is fixed to the sliding plate (105a) by screws.

3. The prestressed tensioning machine for tensioning T-beams according to claim 1, characterized in that: The drive group (104) includes: A hydraulic cylinder (104a) is provided on the frame (102); A hydraulic rod (104b) is slidably disposed in the hydraulic cylinder (104a); Wherein, the clamping group (103) is arranged on the hydraulic rod (104b).

4. The prestressed tensioning machine for tensioning T-beams according to claim 3, characterized in that: The clamping group (103) comprises: An insert sleeve (103a) has an insert hole and is fixed to the hydraulic rod (104b); A first clamping block (103b) is slidably disposed in the inserting sleeve (103a) up and down; A second clamping block (103c) is fixed in the inserting sleeve (103a) and is located below the first clamping block (103b); The pressure member (103d) is rotatably mounted on the first clamping block (103b) and is threadedly connected to the inserting sleeve (103a).

5. The prestressed tensioning machine for tensioning T-beams according to claim 1, characterized in that: The frame (102) is arranged on a workbench (101), and the workbench (101) comprises: A first slide rail (101a); A platform (101b) is slidably mounted on the first slide rail (101a) via a pulley (101f); A second slide rail (101c) is provided on the platform (101b) and is perpendicular to the first slide rail (101a) in the horizontal direction; A lifting platform (101d) is slidably arranged on the second slide rail (101c), and the frame (102) is arranged on the lifting platform (101d).

6. The prestressed tensioning machine for tensioning T-beams according to claim 5, characterized in that: A buffer group (101e) is provided between the frame (102) and the lifting platform (101d).

7. The prestressed tensioning machine for tensioning T-beams according to claim 6, characterized in that: The buffer group (101e) includes: A sliding barrel (101g) is provided on the lifting platform (101d); A slide bar (101h) is arranged in the slide barrel (101g) for sliding up and down; The spring (101i) has two ends respectively fixed on the frame (102) and the lifting platform (101d).

Images