Movable height-adjusting jack checking counter-force device

Abstract

The utility model belongs to the technical field of mechanical matching tools, and particularly relates to a movable height-adjusting jack checking counter-force device. Comprising a base plate, and walking wheels are installed on the base plate; the lower ends of the main pull rods are installed on the base plate and can rotate, and threads are arranged on the outer portions of the main pull rods; a plurality of threaded holes are formed in the upper steel plate, the number of the threaded holes is the same as that of the main pull rods, and the main pull rods penetrate through the threaded holes and are in threaded connection with the threaded holes; the bolt motors are installed on the upper steel plate and fixedly connected with the main pull rods, and the bolt motors drive the main pull rods to rotate. The device is simple in structure, low in cost, convenient and fast to use, safe and reliable to operate, and suitable for checking construction of the tensioning jack, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical matching tools, in particular to a movable height-adjusting jack reaction force calibration device. Background Art

[0002] Post-tensioned prestressed concrete simply supported box girder is widely used in various prefabricated beam construction due to its advantages such as simple structure, good stress resistance and high rigidity. The box girder is mainly stressed by the prestressed system, and the application of prestress is achieved by hydraulic jacks. The accuracy of the hydraulic jacks and the tensioning system will have a great influence on the application of prestress. According to the specifications, it needs to be calibrated once every 200 times or 1 month. The calibration method is mostly achieved by fixed welding of reaction force, which is immovable and easy to deform. It cannot be used for calibration of jacks of various heights and has poor safety. In order to solve the above problems, a movable, adjustable, easy to operate and non-deformable device is needed. Summary of the invention

[0003] In order to solve the problem of jack checking reaction force, the utility model provides a movable height-adjustable jack checking reaction force device.

[0004] The utility model adopts the following technical scheme: a movable height-adjusting jack reaction force calibration device, comprising:

[0005] A base plate, on which running wheels are mounted;

[0006] A plurality of main pull rods, wherein the lower ends of the main pull rods are mounted on the base plate and can rotate, and threads are arranged on the outside of the main pull rods;

[0007] An upper steel plate, wherein a plurality of threaded holes are provided on the upper steel plate, the number of the threaded holes being the same as the number of the main pull rods, and the main pull rods pass through the threaded holes and are threadedly connected thereto;

[0008] A plurality of bolt motors are installed on the upper steel plate and fixedly connected to the main pull rod, and the bolt motors drive the main pull rod to rotate.

[0009] In some embodiments, four main pull rods are provided.

[0010] In some embodiments, the base plate is a square thick steel plate with four semicircular grooves arranged in a square at the four corners, a round hole is arranged in the center of the semicircular groove, and a fixing fastener is passed through the round hole; the lower end of the main pull rod is round, and its lower end is installed in the semicircular groove, and the lower end of the main pull rod is fixed to the fixing fastener.

[0011] In some embodiments, the traveling wheel is driven by a traveling motor, and the traveling motor is mounted on the base plate.

[0012] In some embodiments, the bolt motor and the travel motor are powered by batteries, which are mounted on the upper steel plate.

[0013] In some embodiments, the bolt motor and the travel motor are controlled by a controller.

[0014] In some embodiments, a hydraulic support is also provided at the bottom of the base plate, and the hydraulic support is provided with hydraulic power by a hydraulic pump station, and the hydraulic pump station is controlled and connected by a controller.

[0015] In some embodiments, the upper steel plate is a square thick steel plate, and a 10 cm high thickened portion is arranged below the threaded holes of the upper steel plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1) Through the combination of bolt motor and upper steel plate, the top surface of the reaction force of the support device can be freely adjusted to meet the calibration support requirements of jacks of different heights and tonnages, so as to achieve the purpose of sharing jacks of multiple heights in one device.

[0018] 2) The battery and hydraulic pump station provide running and supporting power. The device can move on its own and can be stably supported, thus achieving the purpose of mobile inspection and construction of the calibration device in multiple sites and different environments.

[0019] 3) It has simple structure, low cost, convenient and quick use, safe and reliable operation, improved efficiency, and is suitable for the calibration construction of tensioning jacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Among them, 1 is the base plate, 2 is the main pull rod, 3 is the fixing fastener, 4 is the upper steel plate, 5 is the running wheel, 6 is the running motor, 7 is the hydraulic support, 8 is the bolt motor, 9 is the hydraulic pump station, 10 is the battery, and 11 is the controller. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown, a movable height-adjusting jack reaction force calibration device comprises:

[0024] A base plate 1, on which a running wheel 5 is mounted;

[0025] 4 main pull rods 2, the lower ends of the main pull rods 2 are mounted on the base plate 1 and can rotate, and the outer sides of the main pull rods 2 are provided with threads;

[0026] An upper steel plate 4, wherein a plurality of threaded holes are provided on the upper steel plate 4, the number of the threaded holes being the same as the number of the main pull rods 2, and the main pull rods 2 pass through the threaded holes and are threadedly connected thereto;

[0027] A plurality of bolt motors 8 are installed on the upper steel plate 4 and fixedly connected to the main pull rod 2 , and the bolt motors 8 drive the main pull rod 2 to rotate.

[0028] The jack to be calibrated is arranged between the base plate 1 and the upper steel plate 4. The distance between the base plate 1 and the upper steel plate 4 is adjusted by driving the bolt motor 8, so as to adapt to the jacks to be calibrated of different heights.

[0029] In other embodiments, three, five or more main tie rods 2 may be provided.

[0030] Specifically, the base plate 1 is a square thick steel plate with four semicircular grooves arranged in a square at the four corners. A circular hole is arranged in the center of the semicircular groove, and a fixing fastener 3 is passed through the circular hole; the lower end of the main pull rod 2 is circular, and its lower end is installed in the semicircular groove, and the lower end of the main pull rod 2 is fixed to the fixing fastener 3.

[0031] Specifically, the running wheel 5 is driven by a running motor 6 , and the running motor 6 is mounted on the base plate 1 .

[0032] Specifically, the bolt motor 8 and the travel motor 6 are powered by a battery 10 , and the battery 10 is installed on the upper steel plate 4 .

[0033] Specifically, the bolt motor 8 and the travel motor 6 are controlled by the controller 11 .

[0034] Specifically, a hydraulic support 7 is further provided at the bottom of the base plate 1 , and the hydraulic support 7 is provided with hydraulic power by a hydraulic pump station 9 , and the hydraulic pump station 9 is controlled and connected by a controller 11 .

[0035] Specifically, the upper steel plate 4 is a square thick steel plate, and a 10 cm high thickened portion is arranged below the threaded hole of the upper steel plate 4 .

[0036] The working principle of the utility model is:

[0037] Bolt the traveling wheel, traveling motor and hydraulic support to the four corners under the base plate, install four main tie rods, insert the round head end of the main tie rod downward into the four semicircular grooves of the base plate, pass the fixing fastener through the upper end of the main tie rod and bolt it to the base plate, bolt the hydraulic pump station, battery and controller to the upper steel plate, insert the four bolt holes of the upper steel plate into the four main tie rods and rotate the four main tie rods so that the tie rods pass through the bolt holes of the upper steel plate and the middle of the screw motor, connect the traveling motor, bolt motor and hydraulic pump station to the controller through wires; the hydraulic support is connected to the hydraulic pump station through a pump pipe. After the installation is completed, debug the inspection device, drive the device to the construction inspection space, put the jack to be checked in the center of the four main tie rods, lower the upper steel plate of the device to the top of the jack through the controller, support the hydraulic support until the four corners of the device are horizontal and stable, start to check the jack, weigh it out after completion and check the next jack.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A movable height-adjusting jack reaction force calibration device, characterized in that: include: A base plate (1), wherein a running wheel (5) is mounted on the base plate (1); A plurality of main pull rods (2), wherein the lower ends of the main pull rods (2) are mounted on the base plate (1) and are capable of self-rotation, and threads are arranged on the outside of the main pull rods (2); An upper steel plate (4), wherein a plurality of threaded holes are provided on the upper steel plate (4), the number of the threaded holes being the same as the number of the main pull rods (2), and the main pull rods (2) passing through the threaded holes and being threadedly connected thereto; A plurality of bolt motors (8), wherein the bolt motors (8) are mounted on the upper steel plate (4) and fixedly connected to the main pull rod (2), and the bolt motors (8) drive the main pull rod (2) to rotate.

2. The movable height-adjustable jack reaction force calibration device according to claim 1 is characterized in that: Four main pull rods (2) are provided.

3. The movable height-adjustable jack reaction force calibration device according to claim 1, characterized in that: The base plate (1) is a square thick steel plate, with four semicircular grooves arranged in a square shape at the four corners, a circular hole arranged in the center of the semicircular groove, and a fixing fastener (3) passing through the circular hole; the lower end of the main pull rod (2) is circular, and its lower end is installed in the semicircular groove, and the lower end of the main pull rod (2) is fixed to the fixing fastener (3).

4. The movable height-adjustable jack reaction force calibration device according to claim 1, characterized in that: The running wheel (5) is driven by a running motor (6), and the running motor (6) is mounted on the base plate (1).

5. The movable height-adjustable jack reaction force calibration device according to claim 4, characterized in that: The bolt motor (8) and the travel motor (6) are powered by a battery (10), and the battery (10) is mounted on the upper steel plate (4).

6. The movable height-adjustable jack reaction force calibration device according to claim 5, characterized in that: The bolt motor (8) and the travel motor (6) are controlled by a controller (11).

7. The movable height-adjustable jack reaction force calibration device according to claim 1, characterized in that: A hydraulic support (7) is also provided at the bottom of the base plate (1), and the hydraulic support (7) is provided with hydraulic power by a hydraulic pump station (9), and the hydraulic pump station (9) is controlled and connected by a controller (11).

8. The movable height-adjustable jack reaction force calibration device according to claim 1, characterized in that: The upper steel plate (4) is a square thick steel plate, and a 10 cm high thickened portion is provided below the threaded hole of the upper steel plate (4).

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