Fire-fighting pipe fitting pressure test machine

Abstract

The invention discloses a fire-fighting pipe fitting pressure testing machine, and belongs to the technical field of pressure testing machines, and the fire-fighting pipe fitting pressure testing machine comprises a pressure testing machine box body, the lower part of one side of the pressure testing machine box body is fixedly connected with a supporting pedestal, and the top ends of four stand columns are welded with a supporting top plate used for bearing hydraulic columns. Telescopic rods at the bottoms of the hydraulic columns penetrate through the supporting top plate to be fixedly connected with a lifting lower pressing plate, a buffering and damping assembly is arranged between the lifting lower pressing plate and the supporting top plate, and the lifting lower pressing plate and the supporting pedestal are provided with a fire-fighting pipe fitting body; the opposite side faces of the lifting lower pressing plate and the supporting pedestal are each provided with a locking and limiting assembly for limiting the fire-fighting pipe fitting body and preventing sideslip, and when the fire-fighting pipe fitting body needs to rotate, the two locking and limiting assemblies can drive the fire-fighting pipe fitting body to rotate. Longitudinal limiting of the fire-fighting pipe fitting body can be guaranteed, meanwhile, the pressure applying and sideslip preventing effects on the fire-fighting pipe fitting body can be achieved, and the pressure testing efficiency of the fire-fighting pipe fitting is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure testing machines, in particular to a pressure testing machine for fire-fighting pipe fittings. Background Art

[0002] Fire fittings are a general term for parts that play the role of connection, control, direction change, diversion, sealing, support, etc. in fire pipe systems. In the field of fire protection, the quality requirements of fittings are particularly strict. After the production of fittings, they need to be strictly tested. In the process of testing the sealing and leakage of fittings, a pressure tester is needed. When conducting a pressure test on fire fittings, the fire fittings are usually placed between the sealing seat and the hydraulic device of the pressure tester, and the fire fittings are pressed down by the hydraulic device. However, the current equipment lacks a structure for locking and limiting the fire fittings, which can easily cause the ends of the fire fittings to slip after being stressed, causing the fire fittings to fall off or be damaged, reducing the pressure test efficiency of the fire fittings. Summary of the invention

[0003] The purpose of the present invention is to provide a fire protection pipe fitting pressure testing machine to solve the problems raised in the background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fire-fighting pipe pressure testing machine, comprising a pressure testing machine casing, a lower part of one side of the pressure testing machine casing is fixedly connected to a support pedestal, the top surface of the support pedestal is symmetrically welded with four columns, the top ends of the four columns are welded with a support top plate for bearing a hydraulic column, the bottom telescopic rod of the hydraulic column passes through the support top plate and is fixedly connected with a lifting and lowering pressure plate, a buffering and shock-absorbing assembly is arranged between the lifting and lowering pressure plate and the support top plate, a fire-fighting pipe body is arranged on the lifting and lowering pressure plate and the support pedestal, and locking and limiting assemblies are arranged on opposite sides of the lifting and lowering pressure plate and the support pedestal for limiting the position of the fire-fighting pipe body and preventing it from sliding sideways, and when the fire-fighting pipe body needs to be rotated, the two locking and limiting assemblies can drive the fire-fighting pipe body to rotate.

[0005] Preferably, each of the locking and limiting components includes a connecting base plate, and the two connecting base plates are respectively mounted on the opposite side of the lifting and lowering pressure plate and the supporting base through bolts.

[0006] Preferably, each of the locking and limiting components also includes an insert bearing cylinder which is rotatably connected to the surface of the connecting base plate and can limit the position of the fire protection pipe body.

[0007] Preferably, two arc-shaped clamping plates for clamping the fire-fighting pipe body are symmetrically arranged in the inner cavity of the plug-in bearing tube, and two locking screw members are symmetrically passed through the circumference of the plug-in bearing tube, and each of the locking screw members is rotatably connected to the corresponding arc-shaped clamping plate.

[0008] Preferably, a circular groove is provided in the middle of a side surface of the connecting base plate facing the plug-in bearing tube, and a circular through hole is provided in the inner bottom wall of the circular groove.

[0009] Preferably, a first bearing is fixedly connected in the circular groove, a connecting shaft column is welded at the middle position of the bottom surface of the plug-in bearing cylinder, and the connecting shaft column is interference fit with the first bearing.

[0010] Preferably, the connecting shaft column extends from the first bearing to the circular through hole.

[0011] Preferably, a second bearing is provided on a side of the arc-shaped clamping plate facing away from the fire-fighting pipe body, and the bare rod end of the locking screw member is interference-fitted with the second bearing.

[0012] Preferably, the buffer and shock absorbing assembly includes two buffer dampers fixedly mounted on the top surface of the lifting lower pressure plate, and the top damping ends of the two buffer dampers are fixedly connected to the supporting top plate.

[0013] Preferably, a rotating motor is embedded on a side of the connecting base plate facing away from the plug-in bearing tube, and the output shaft of the rotating motor is fixedly connected to the connecting shaft column.

[0014] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0015] The fire-fighting pipe fitting pressure testing machine places the fire-fighting pipe fitting body between the lifting lower pressure plate and the supporting top plate, and the force applied by the hydraulic column acts on the lifting lower pressure plate and the fire-fighting pipe fitting body, while the locking and limiting assembly arranged between the lifting lower pressure plate and the supporting pedestal can limit and lock the fire-fighting pipe fitting body, thereby ensuring the longitudinal limitation of the fire-fighting pipe fitting body and at the same time exerting pressure on the fire-fighting pipe fitting body to prevent sideslip. In addition, when the fire-fighting pipe fitting body needs to be rotated, the locking and limiting assembly can rotate the fire-fighting pipe fitting body according to the action of the internal rotating motor and the first bearing, thereby adjusting the appearance inspection position of the fire-fighting pipe fitting body and improving the pressure testing efficiency of the fire-fighting pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2It is a schematic structural diagram of the state in which the fire protection pipe fitting body of the present invention is separated from two locking and limiting components;

[0019] Figure 3 It is a schematic diagram of the structure of the connection base plate and the plug-in bearing tube in the disassembled state of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the arc-shaped clamping plate and the locking screw member of the present invention in a disassembled state;

[0021] Figure 5 It is a structural schematic diagram of the connection state of the lifting and lowering pressing plate and the buffer damper of the present invention.

[0022] Description of reference numerals:

[0023] In the figure: 1. Pressure test machine housing; 2. Support pedestal; 3. Support top plate; 4. Column; 5. Lifting and lowering pressure plate; 6. Hydraulic column; 7. Fire pipe body; 8. Connecting base plate; 9. Locking and limiting assembly; 10. Inserting bearing cylinder; 11. Arc clamping plate; 12. Locking screw member; 13. Circular groove; 14. First bearing; 15. Connecting shaft column; 16. Circular through hole; 17. Rotating motor; 18. Second bearing; 19. Buffer damper. DETAILED DESCRIPTION

[0024] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0025] Unless otherwise defined, the up, down, left, right, front, back, inside and outside directions involved in this document are based on the up, down, left, right, front, back, inside and outside directions in the figures shown in the present invention, and are explained here together.

[0026] This embodiment discloses Figures 1 to 5 A fire-fighting pipe pressure testing machine shown in the figure includes a pressure testing machine box 1, a support base 2 is fixedly connected to the lower part of one side of the pressure testing machine box 1, four columns 4 are symmetrically welded to the top surface of the support base 2, and a support top plate 3 for carrying a hydraulic column 6 is welded to the top of the four columns 4. The bottom telescopic rod of the hydraulic column 6 passes through the support top plate 3 and is fixedly connected to a lifting lower pressure plate 5. A buffer shock-absorbing assembly is arranged between the lifting lower pressure plate 5 and the support top plate 3. The buffer shock-absorbing assembly includes two buffer dampers 19 fixedly installed on the top surface of the lifting lower pressure plate 5, and the top damping ends of the two buffer dampers 19 are fixedly connected to the support top plate 3.

[0027] The two buffer dampers 19 are respectively located at two sides of the telescopic rod of the hydraulic column 6 , and the buffer dampers 19 can buffer and reduce shock to the retraction force of the lifting lower pressing plate 5 , thereby improving the stability of the lifting lower pressing plate 5 .

[0028] The lifting and lowering pressure plate 5 and the supporting pedestal 2 are provided with a fire-fighting pipe fitting body 7, and the lifting and lowering pressure plate 5 and the supporting pedestal 2 are provided with a locking and limiting component 9 on the opposite side to limit the fire-fighting pipe fitting body 7 and prevent it from sliding sideways. Each locking and limiting component 9 includes a connecting base plate 8, and the two connecting base plates 8 are respectively installed on the lifting and lowering pressure plate 5 and the supporting pedestal 2 on the opposite side by bolts. Each locking and limiting component 9 also includes a plug-in bearing tube 10 which is rotatably connected to the surface of the connecting base plate 8 and can limit the fire-fighting pipe fitting body 7.

[0029] Two arc-shaped clamping plates 11 for clamping the fire-fighting pipe body 7 are symmetrically arranged in the inner cavity of the plug-in bearing tube 10, and two locking screw members 12 are symmetrically passed through the circumference of the plug-in bearing tube 10. Each locking screw member 12 is rotatably connected to the corresponding arc-shaped clamping plate 11. A circular groove 13 is opened in the middle position of one side of the connecting base plate 8 facing the plug-in bearing tube 10, and a circular through hole 16 is opened in the inner bottom wall of the circular groove 13. A first bearing 14 is fixedly connected in the circular groove 13, and a connecting shaft column 15 is welded in the middle position of the bottom surface of the plug-in bearing tube 10. The connecting shaft column 15 and the first bearing 14 are interference fit. When the fire-fighting pipe body 7 needs to be rotated, the two locking limit assemblies 9 can drive the fire-fighting pipe body 7 to rotate.

[0030] The connecting shaft column 15 extends from the first bearing 14 to the circular through hole 16, and a second bearing 18 is provided on the side of the arc-shaped clamping plate 11 facing away from the fire pipe body 7. The bare rod end of the locking screw 12 is interference fit with the second bearing 18, and a rotating motor 17 is embedded on the side of the connecting base plate 8 facing away from the plug-in bearing tube 10. The output shaft of the rotating motor 17 is fixedly connected to the connecting shaft column 15.

[0031] A PLC for controlling the opening and closing of the hydraulic column 6 and the rotary motor 17 is installed in the inner cavity of the pressure test machine housing 1. The PLC model can be selected according to actual needs. In the present invention, the PLC model is S7-200, which has the advantages of high reliability, strong anti-interference ability and convenient maintenance.

[0032] How it works

[0033] The fire-fighting pipe fitting pressure testing machine places the fire-fighting pipe fitting body 7 in two plug-in bearing tubes 10, and screws the locking screw member 12. Under the action of the second bearing 18, the locking screw member 12 can drive the arc-shaped clamping plate member 11 to move centripetally in the inner cavity of the plug-in bearing tube 10, and the two opposite arc-shaped clamping plates 11 can clamp the fire-fighting pipe fitting body 7 centripetally. Through the action of the hydraulic column 6, the fire-fighting pipe fitting body 7 is pressed down by raising and lowering the pressing plate 5. When the circumferential position of the fire-fighting pipe fitting body 7 needs to be adjusted, the hydraulic column 6 stops pressing down on the fire-fighting pipe fitting body 7, and the rotating motor 17 drives the connecting shaft column 15. Under the action of the two first bearings 14, the fire-fighting pipe fitting body 7 can be driven to rotate.

[0034] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire protection pipe fitting pressure tester, comprising a pressure tester housing (1), characterized in that: A support pedestal (2) is fixedly connected to the lower part of one side of the pressure test machine housing (1), and four columns (4) are symmetrically welded to the top surface of the support pedestal (2), and a support top plate (3) for bearing a hydraulic column (6) is welded to the top of the four columns (4), and a bottom telescopic rod of the hydraulic column (6) passes through the support top plate (3) and is fixedly connected to a lifting lower pressure plate (5), and a buffer shock absorbing component is arranged between the lifting lower pressure plate (5) and the support top plate (3), and a fire-fighting pipe fitting body (7) is arranged on the lifting lower pressure plate (5) and the support pedestal (2), and a locking limit component (9) for limiting the position of the fire-fighting pipe fitting body (7) and preventing it from sliding sideways is arranged on the opposite side of the lifting lower pressure plate (5) and the support pedestal (2), and when the fire-fighting pipe fitting body (7) needs to be rotated, the two locking limit components (9) can drive the fire-fighting pipe fitting body (7) to rotate.

2. A fire protection pipe fitting pressure testing machine according to claim 1, characterized in that: Each of the locking and limiting components (9) comprises a connecting base plate (8), and the two connecting base plates (8) are respectively mounted on the opposite side of the lifting and lowering pressure plate (5) and the supporting pedestal (2) by means of bolts.

3. A fire protection pipe fitting pressure testing machine according to claim 2, characterized in that: Each of the locking and limiting components (9) also includes a plug-in bearing cylinder (10) which is rotatably connected to the surface of the connecting base plate (8) and is capable of limiting the position of the fire protection pipe body (7).

4. A fire protection pipe fitting pressure testing machine according to claim 3, characterized in that: Two arc-shaped clamping plates (11) for clamping the fire-fighting pipe body (7) are symmetrically arranged in the inner cavity of the plug-in bearing tube (10), and two locking screws (12) are symmetrically passed through the circumference of the plug-in bearing tube (10), and each of the locking screws (12) is rotatably connected to the corresponding arc-shaped clamping plate (11).

5. A fire protection pipe fitting pressure testing machine according to claim 4, characterized in that: A circular groove (13) is provided at the middle position of a side surface of the connection base plate (8) facing the plug-in bearing tube (10), and a circular through hole (16) is provided on the inner bottom wall of the circular groove (13).

6. A fire protection pipe fitting pressure testing machine according to claim 5, characterized in that: A first bearing (14) is fixedly connected in the circular groove (13), and a connecting shaft column (15) is welded at the middle position of the bottom surface of the plug-in bearing cylinder (10), and the connecting shaft column (15) is interference-fitted with the first bearing (14).

7. A fire protection pipe fitting pressure testing machine according to claim 6, characterized in that: The connecting shaft column (15) extends from the first bearing (14) to the circular through hole (16).

8. A fire protection pipe fitting pressure testing machine according to claim 7, characterized in that: A second bearing (18) is provided on a side of the arc-shaped clamping plate (11) facing away from the fire-fighting pipe body (7), and the bare rod end of the locking screw (12) is interference-fitted with the second bearing (18).

9. A fire protection pipe fitting pressure testing machine according to claim 8, characterized in that: The buffer and shock absorbing assembly comprises two buffer dampers (19) fixedly mounted on the top surface of the lifting lower pressure plate (5), and the top damping ends of the two buffer dampers (19) are fixedly connected to the supporting top plate (3).

10. A fire protection pipe fitting pressure testing machine according to claim 7, characterized in that: A rotating motor (17) is embedded on a side of the connecting base plate (8) facing away from the plug-in bearing tube (10), and an output shaft of the rotating motor (17) is fixedly connected to the connecting shaft column (15).

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