An automatic sleeper reinforcement tensioning device

Abstract

The present invention discloses an automated rail sleeper reinforcement tensioning device, including a reinforcement fixing tool, a stretching and locking mechanism, and a push-pull mechanism. The stretching and locking mechanism includes a tensioning slider, the back of which is connected to a first push-pull device that drives it to move laterally, the front of which is provided with a screw rotating joint arranged along its moving direction, and the tensioning slider is also provided with a first driving device, the first driving device drives the screw rotating joint to rotate; the screw rotating joint is provided with a nut rotating joint on the outside, the nut rotating joint can slide axially along the screw rotating joint, and can also rotate radially along the screw rotating joint, and the tensioning slider is also provided with a second driving device, the second driving device drives the nut rotating joint to rotate. The present invention has reasonable design and is easy to use, and can realize the automated tensioning of rail sleeper reinforcement. During the tensioning process, no manual assistance is required for reinforcement fixing, stretching, and nut locking, which is beneficial to improving production efficiency and saving costs.

Description

Technical Field

[0001] The invention relates to the field of sleeper production equipment, and in particular to an automated sleeper reinforcement tensioning device. Background Art

[0002] In the production of sleepers, the tensioning of steel bars can form a prestressed structure. Prestressing can improve the tensile strength of concrete when it bears loads, prevent or delay the appearance of cracks, and increase the rigidity and stiffness of the structure. At present, the tensioning of sleeper steel bars is basically assisted by manual labor, such as steel bar fixing, stretching, nut locking, etc., which is time-consuming and labor-intensive, and has a low degree of automation. Summary of the invention

[0003] The purpose of the invention is to provide an automated sleeper reinforcement tensioning device.

[0004] To achieve the above object, the technical solution of the present invention is: an automated sleeper reinforcement tensioning device, comprising:

[0005] The steel bar fixing tool comprises at least one steel bar tensioning slideway arranged transversely.

[0006] A stretching screw is provided in the slideway along its length direction, one end of the stretching screw passes through the steel bar tensioning slideway, one end of the stretching screw passing through the steel bar tensioning slideway is sleeved with a locking nut, and the other end of the stretching screw is connected to a steel bar fixing block sliding along the steel bar tensioning slideway, one end of the steel bar to be tensioned is fixed, and the other end is fixed to the steel bar fixing block;

[0007] The stretching locking mechanism includes a tensioning slider, the back of which is connected with a device that drives the slider to move laterally.

[0008] A first push-pull device is provided, the front of the tensioning slider is provided with a screw rotating joint arranged along its moving direction, and the tensioning slider is also provided with a first driving device, the first driving device drives the screw rotating joint to rotate, connects the screw rotating joint and the tensioning screw in contact with it, or withdraws the screw rotating joint connected with the tensioning screw; a nut rotating joint is provided on the outer sleeve of the screw rotating joint, the nut rotating joint can slide axially along the screw rotating joint, and can also rotate radially along the screw rotating joint, and the tensioning slider is also provided with a second driving device, the second driving device drives the nut rotating joint to rotate, and the nut rotating joint rotates under the drive of the second driving device while sliding axially along the screw rotating joint, and tightens the locking nut embedded in the nut rotating joint to the outer wall of the steel bar tensioning slideway;

[0009] The push-pull mechanism comprises a mounting platform, on which a track is arranged along the stretching direction of the steel bar.

[0010] A working platform is provided on the track, and the stretching locking mechanism is arranged on the working platform. A second push-pull device is also provided on the installation platform. The second push-pull device drives the working platform to reciprocate along the track, and adjusts the distance from the stretching locking mechanism to the steel bar fixing tooling, so that the stretching screw contacts the screw rotary joint while the nut rotary joint is nested on the locking nut, or the stretching screw is away from the screw rotary joint while the locking nut is withdrawn from the nut rotary joint.

[0011] As a preferred solution of this solution, both the first push-pull device and the second push-pull device are telescopic cylinders.

[0012] As a preferred embodiment of this solution, the first driving device drives the screw rotary joint to rotate through the gear.

[0013] The second driving device drives the nut rotary joint to rotate through the gear.

[0014] As a preferred solution of this solution, the stretch locking mechanism also includes a limiter to prevent the nut rotary joint from falling off from the screw rotary joint.

[0015] As a preferred solution of this scheme, a limit block is provided between the installation platform and the working platform, and the limit block is installed at the lower end of the working platform to prevent the working platform from sliding during the tensioning process.

[0016] As a preferred solution of this scheme, the stretching screw is connected to the back side of the steel bar fixing block, and a T-slot is provided on the front side of the steel bar fixing block. The end of the steel bar to be tensioned is placed in the T-slot by means of a pre-installed limit nut to fix the end of the steel bar to be tensioned.

[0017] The beneficial effects of the present invention are as follows: the present invention is reasonably designed and easy to use, and can realize the automatic tensioning of the sleeper reinforcement. During the tensioning process, the reinforcement fixing, stretching, and nut locking do not require manual assistance, which is beneficial to improving production efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the stretching and locking mechanism of the present invention;

[0020] Figure 3 It is a cross-sectional view of the stretch locking mechanism of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0022] like Figure 1As shown, an automated sleeper reinforcement tensioning device includes a reinforcement fixing tool 100, a tensioning and locking mechanism 100, and a push-pull mechanism 300.

[0023] The steel bar fixing tool 100 includes at least one transversely arranged steel bar tensioning slide 101, and the steel bar tensioning slide 101 is provided with a stretching screw 102 arranged along its length direction. One end of the stretching screw 102 passes through the steel bar tensioning slide 101, and the end of the stretching screw 102 that passes through the steel bar tensioning slide 102 is sleeved with a locking nut 103, and the other end of the stretching screw 102 is connected to a steel bar fixing block 104 that slides along the steel bar tensioning slide 101. The stretching screw 102 is connected to the back side of the steel bar fixing block 104, and a T-slot 105 is provided on the front side of the steel bar fixing block 104. The end of the steel bar to be tensioned is placed in the T-slot 105 by pre-installing a limit nut to fix the end of the steel bar to be tensioned.

[0024] like Figure 2-3 As shown, the stretch locking mechanism 200 includes a tensioning slider 201, the back of which is connected to a first push-pull device 207 for driving it to move laterally, the front of the tensioning slider 201 is provided with a screw rotating joint 202 arranged along its moving direction, and the tensioning slider 201 is also provided with a first driving device 203, the first driving device 203 drives the screw rotating joint 202 to rotate through a gear, connects the screw rotating joint 202 and the tensioning screw 102 in contact with it, or withdraws the screw rotating joint 202 connected to the tensioning screw 102; the screw rotating joint 202 is sheathed with a nut rotating joint 204, the nut rotating joint 204 and the screw rotating joint 202 A self-lubricating bearing 205 is provided in between, the nut rotary joint 204 can slide axially along the screw rotary joint 202, and can also rotate radially along the screw rotary joint 202. A second driving device 206 is also provided on the tensioning slider 201. The second driving device 206 drives the nut rotary joint 204 to rotate through gears. The nut rotary joint 204 rotates under the drive of the second driving device 206 and slides axially along the screw rotary joint 202, and the locking nut 102 embedded in the nut rotary joint 204 is tightened to the outer wall of the steel bar tensioning slideway 101; the tension locking mechanism 200 also includes a limiter (not shown in the figure) for preventing the nut rotary joint 204 from falling off from the screw rotary joint 202.

[0025] The push-pull mechanism 300 includes an installation platform 301, on which is a track 302 arranged along the stretching direction of the steel bar, on which is a working platform 303, and on which is a second push-pull device 304. The second push-pull device 304 drives the working platform 303 to reciprocate along the track 302, and adjusts the distance from the stretching locking mechanism 200 to the steel bar fixing tool 100, so that the stretching screw 102 contacts the screw rotary joint 202 while the nut rotary joint 204 is nested in the locking nut 103, or the stretching screw 102 moves away from the screw rotary joint 202 while the locking nut 103 is withdrawn from the nut rotary joint 204.

[0026] The first push-pull device 207 and the second push-pull device 304 are both telescopic cylinders.

[0027] A limit block 305 is provided between the installation platform 301 and the working platform 303 . The limit block 305 is installed at the lower end of the working platform 303 to prevent the working platform 303 from sliding during the tensioning process.

[0028] The invention has reasonable design and is easy to use, and can realize automatic tensioning of sleeper reinforcement bars. During the tensioning process, no manual assistance is required for reinforcement fixing, stretching, and nut locking, which is beneficial to improving production efficiency and saving costs.

[0029] The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An automated sleeper reinforcement tensioning device, characterized in that: include: A steel bar fixing tool, the steel bar fixing tool comprising at least one transversely arranged steel bar tensioning slideway, a stretching screw arranged along its length direction is arranged in the steel bar tensioning slideway, one end of the stretching screw passes through the steel bar tensioning slideway, one end of the stretching screw passing through the steel bar tensioning slideway is sleeved with a locking nut, the other end of the stretching screw is connected to a steel bar fixing block sliding along the steel bar tensioning slideway, one end of the steel bar to be tensioned is fixed, and the other end is fixed to the steel bar fixing block; A stretching locking mechanism, wherein the stretching locking mechanism comprises a tensioning slider, a first push-pull device driving the tensioning slider to move laterally is connected to the back of the tensioning slider, a screw rotating joint arranged along the moving direction of the tensioning slider is arranged on the front of the tensioning slider, and a first driving device is also arranged on the tensioning slider, the first driving device drives the screw rotating joint to rotate, connects the screw rotating joint with the tensioning screw in contact with it, or withdraws the screw rotating joint connected to the tensioning screw; a nut rotating joint is provided on the outer sleeve of the screw rotating joint, the nut rotating joint can slide axially along the screw rotating joint, and can also rotate radially along the screw rotating joint, and a second driving device is also arranged on the tensioning slider, the second driving device drives the nut rotating joint to rotate, and the nut rotating joint rotates while sliding axially along the screw rotating joint under the drive of the second driving device, and tightens the locking nut embedded in the nut rotating joint to the outer wall of the steel bar tensioning slideway; A push-pull mechanism, the push-pull mechanism comprising an installation platform, a track arranged along the stretching direction of the steel bar is arranged on the installation platform, a working platform is arranged on the track, the stretching locking mechanism is arranged on the working platform, and a second push-pull device is also arranged on the installation platform, the second push-pull device drives the working platform to reciprocate along the track, and adjusts the distance from the stretching locking mechanism to the steel bar fixing tooling, so that the stretching screw contacts the screw rotary joint while the nut rotary joint is nested on the locking nut, or the stretching screw is away from the screw rotary joint while the locking nut is withdrawn from the nut rotary joint; The first driving device drives the screw rotary joint to rotate via gears; the second driving device drives the nut rotary joint to rotate via gears; The stretch locking mechanism also includes a limiter for preventing the nut rotary joint from falling off the screw rotary joint.

2. The automatic sleeper reinforcement tensioning device according to claim 1, characterized in that: The first push-pull device and the second push-pull device are both telescopic cylinders.

3. The automatic sleeper reinforcement tensioning device according to claim 1, characterized in that: A limit block is provided between the installation platform and the working platform, and the limit block is installed at the lower end of the working platform to prevent the working platform from sliding during the tensioning process.

4. The automatic sleeper reinforcement tensioning device according to claim 1, characterized in that: The stretching screw is connected to the back of the steel bar fixing block, and a T-slot is provided on the front of the steel bar fixing block. The end of the steel bar to be tensioned is placed in the T-slot by pre-installing a limit nut to fix the end of the steel bar to be tensioned.

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