CN109916726B

CN109916726B - Automatic screwing device of static pressure testing machine

Info

Publication number: CN109916726B
Application number: CN201910076263.3A
Authority: CN
Inventors: 陈志鹏
Original assignee: Xiamen Xinglongxing Hydraulic Co ltd
Current assignee: Xiamen Xinglongxing Hydraulic Co ltd
Priority date: 2019-01-26
Filing date: 2019-01-26
Publication date: 2021-07-06
Anticipated expiration: 2039-01-26
Also published as: CN109916726A

Abstract

The invention discloses an automatic screwing device of a hydrostatic testing machine, relates to the technical field of rubber tube assembly detection equipment, and solves the technical problem of low detection efficiency of a rubber tube assembly. The automatic hydraulic pipe connecting device is characterized by comprising support frames which are arranged at two ends of a rack and are arranged in parallel with a hydraulic pipe, a plurality of clamping sleeves which are respectively connected to the two support frames in a rotating mode, and two transmission assemblies which are respectively arranged at two ends of the rack and are used for respectively driving the clamping sleeves at the two ends of the rack to rotate; the invention has the advantage of improving the detection efficiency of the rubber tube assembly.

Description

Automatic screwing device of static pressure testing machine

Technical Field

The invention relates to the technical field of rubber tube assembly detection equipment, in particular to an automatic screwing device of a static pressure testing machine.

Background

The rubber tube assembly is an auxiliary device commonly used in a hydraulic system. The hydraulic transmission device consists of a rubber pipe and two steel fittings with thread sleeves, is used for connecting various hydraulic elements in a hydraulic system, and is mainly applied to hydraulic power transmission or transmission of high-pressure media such as water, gas, oil and the like under the condition of working temperature ranging from minus 40 ℃ to plus 100 ℃; when the rubber tube assembly leaves the factory, a static pressure tester is needed to perform pressure resistance and explosion tests on the rubber tube assembly.

As shown in fig. 1, the conventional hydrostatic testing machine includes a frame 1, a hydraulic pipe 2 disposed on the frame, a plurality of screwed joints 21 equidistantly arranged on the hydraulic pipe, a hydraulic pump 3 having a water outlet communicated with the hydraulic pipe 21, a water tank (not shown) disposed in the frame 1 and communicated with a water inlet end of the hydraulic pump 3, a pressure relief pipe 4 having two ends respectively communicated with the hydraulic pipe 2 and the water tank, a pressure relief valve 41 disposed on the pressure relief pipe, and a sealing member 5 for sealing one end of the rubber pipe away from the screwed joints.

During testing, the steel part joints arranged at one end of each rubber pipe are respectively communicated with each thread joint through the thread sleeves, the sealing elements are sealed with the thread sleeves arranged at the other ends of the rubber pipes, and finally, the hydraulic pipes are supplied with liquid through the hydraulic pump, so that pressure testing liquid is poured into the rubber pipes to detect the pressure resistance of the rubber pipes, and during detection, the pressure in the hydraulic pipes is ensured to be stable through the pressure relief pipes; however, when the rubber tube assembly is installed, in order to ensure that the threaded sleeves can be stably and firmly connected with the threaded joints or the sealing elements, the threaded sleeves need to be screwed one by a worker through a wrench, and the rubber tube assembly can be disassembled only one by one when being disassembled, so that the detection efficiency of the rubber tube assembly is low, and the rubber tube assembly is not beneficial to production and use of manufacturers.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to provide an automatic screwing device of a static pressure testing machine, which has the advantage of improving the detection efficiency of a rubber tube assembly.

In order to achieve the purpose, the invention provides the following technical scheme: including setting up in frame both ends and with hydraulic pressure pipe parallel arrangement's support frame, many rotate respectively and connect the joint sleeve on two support frames, and two set sets up respectively in the both ends of frame in order to be used for driving respectively that each joint sleeve that is located the frame both ends carries out the transmission assembly of rotation, each joint sleeve that is located the frame both ends overlaps respectively and locates on each screwed joint and sealing member, all be provided with on each joint sleeve with the telescopic both ends intercommunication of joint set up and with the spacing groove of each side laminating of screwed sleeve.

By adopting the technical scheme, when each rubber pipe assembly is arranged on the static pressure testing machine, only the threaded sleeves at two ends of each rubber pipe are required to be respectively arranged in the clamping sleeves at two ends of the rack, the threaded sleeves at two ends of each rubber pipe are respectively abutted against one threaded joint and one sealing piece, and finally, the clamping sleeves are controlled by the transmission assembly to rotate; at the moment, due to the matching between the limiting groove and the threaded sleeve, when the clamping sleeve rotates, the threaded sleeve can also be driven to rotate, so that the threaded sleeve abutted against the threaded joint or the sealing piece can be in threaded connection with the threaded joint or the sealing piece, and when the threaded sleeve is withdrawn, the clamping sleeve of each piece is controlled to rotate reversely by the transmission assembly; after the arrangement, a worker only needs to install the threaded sleeve into the clamping sleeve, the threaded sleeve does not need to be screwed, the detection efficiency of the rubber tube assembly is greatly improved, and the working strength of the worker is effectively reduced.

The invention is further configured to: and a plurality of first ball bearings are sleeved on the outer wall of each clamping sleeve, and the outer ring of each first ball bearing is fixed with the supporting frame.

Through adopting above-mentioned technical scheme, can avoid the joint sleeve to produce the friction with the support frame when rotating through the cooperation between first ball bearing and joint sleeve and the support frame, effectively reduce the telescopic wearing and tearing speed of joint, and the telescopic rotation work of joint is more smooth when can.

The invention is further configured to: the inner wall of each clamping sleeve and the joint part of the two ends of the clamping sleeve are arranged in a reverse right angle mode.

Through adopting above-mentioned technical scheme, can play the effect of direction through setting up in the telescopic chamfer of joint, be convenient for the staff with the threaded sleeve installation in the joint sleeve.

The invention is further configured to: and second ball bearings are fixed on the inner walls of the clamping sleeves, and inner rings of the second ball bearings are fixed with the outer walls of the threaded joints or the sealing elements respectively.

Through adopting above-mentioned technical scheme, through the cooperation between second ball bearing and joint sleeve and screwed joint (or sealing member), can avoid the joint sleeve to produce the friction with screwed joint (or sealing member) when rotating, effectively reduce the telescopic wearing and tearing speed of joint, and the telescopic rotation work of joint is more smooth when can.

The invention is further configured to: the transmission assembly comprises a motor fixed on the side edge of the rack, chain wheels respectively fixed with the outer walls of the sleeves and the motor shaft of the motor, and chains arranged in the width direction of the rack and meshed with the chain wheels on the same vertical surface.

Through adopting above-mentioned technical scheme, transmission cooperation through between motor, sprocket and the chain makes the motor rotate the time can drive and each joint sleeve of chain complex carries out the rotation, simply realizes the telescopic synchronous rotation work of each joint.

The invention is further configured to: the transmission assembly comprises a motor fixed on the side edge of the rack, belt pulleys fixed with the outer walls of the sleeves and the motor shaft of the motor respectively, and belts arranged in the width direction of the rack and matched with the belt pulleys on the same vertical surface.

Through adopting above-mentioned technical scheme, transmission cooperation through between motor, belt pulley and the belt makes the motor rotate the time can drive and carry out the rotation with each joint sleeve of belt complex, simply realizes the telescopic synchronous rotation work of each joint.

The invention is further configured to: the belt pulleys and the belt are provided with saw-toothed grains which are meshed with each other.

Through adopting above-mentioned technical scheme, can increase the frictional force between belt pulley and the belt through the cockscomb structure line for the belt is difficult for skidding.

The invention is further configured to: the both ends of frame slide respectively and are connected with the propulsion board that sets up along the width direction of frame, each all be provided with the draw-in groove that the side intercommunication was used for supplying steel spare to connect to place on the propulsion board multichannel and the propulsion board, the both sides of frame all are provided with many and are used for driving the cylinder that the propulsion board removed along frame length direction respectively.

Through adopting above-mentioned technical scheme, during the installation rubber tube assembly, place steel spare joint in the draw-in groove and make the propulsion plate be close to the one side of screwed joint (or sealing member) and the one side butt that the screwed joint (or sealing member) was kept away from to the thread bush, then promote the propulsion plate through the cylinder and remove towards the direction of the place of screwed joint (or sealing member) and can promote each and install the thread bush on the propulsion plate and the screwed joint (or sealing member) support tightly.

The invention is further configured to: and a rubber pad is arranged in each clamping groove.

Through adopting above-mentioned technical scheme, can increase the connection stability that the steel part connects and the draw-in groove through the rubber pad, and can avoid the steel part to connect to scrape out the scratch by the draw-in groove when installing into the draw-in groove.

The invention is further configured to: the two sides of each frame all set up the guide bar that sets up along frame length direction, the both ends of each propulsion board are located two guide bars respectively in the cover.

Through adopting above-mentioned technical scheme, can restrict the moving direction of propelling movement board through the guide bar, stability when ensureing to propel the board and move.

Compared with the prior art, the invention has the beneficial effects that:

(1) the thread sleeves arranged at the same end of the rack can be controlled to synchronously rotate through the matching between the transmission assembly and the clamping sleeve, so that the thread sleeves tightly abutted against the clamping sleeve (or the sealing element) can be driven by the clamping sleeve to be in threaded connection with the clamping sleeve (or the sealing element);

(2) the matching between the pushing plate and the air cylinder can apply a force towards the screwing direction of the threaded sleeve on each piece of the threaded sleeve arranged on the pushing plate, so that the threaded sleeve can be connected with the threaded joint (or the sealing element).

Drawings

FIG. 1 is a schematic structural diagram of a conventional hydrostatic testing machine;

FIG. 2 is a schematic structural diagram of the first embodiment;

FIG. 3 is a schematic structural view of a clamping sleeve according to the present embodiment;

FIG. 4 is a cross-sectional view of a clamping sleeve of the present embodiment when installed;

FIG. 5 is a schematic structural diagram of a propulsion assembly according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a transmission assembly according to the present embodiment;

fig. 7 is a schematic structural diagram of the second transmission assembly of the present embodiment.

Reference numerals: 1. a frame; 2. a hydraulic tube; 21. a threaded joint; 3. a hydraulic pump; 4. a pressure relief pipe; 41. a pressure relief valve; 5. a seal member; 6. a support frame; 61. clamping the sleeve; 611. a limiting groove; 62. a first ball bearing; 63. a second ball bearing; 7. a transmission assembly; 71. a sprocket; 72. a motor; 73. a chain; 74. a belt pulley; 75. a belt; 8. a propulsion assembly; 81. a guide bar; 82. a cylinder; 83. a propulsion plate; 831. a card slot; 84. and (7) a rubber pad.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

In the first embodiment, an automatic screwing device of a static pressure tester is shown in fig. 2 and fig. 3, and includes two support frames 6 respectively disposed at two ends of a frame 1, a plurality of clamping sleeves 61 uniformly distributed on the two support frames 6 and equidistantly arranged along the length direction of the support frames 6, two transmission assemblies 7 respectively disposed at two ends of the frame 1 for respectively driving the clamping sleeves 61 mounted on the two support frames 6 to rotate, and two propelling assemblies 8 respectively connected to two ends of the frame 1 in a sliding manner for propelling a threaded sleeve at the two ends of the frame 1 toward a screwing direction of a threaded joint 21 (or a sealing member 5).

As shown in fig. 3, each clamping sleeve 61 is respectively sleeved on each threaded joint 21 (or the sealing element 5), each clamping sleeve 61 is provided with a limiting groove 611 which is coaxial with the clamping sleeve 61 and is communicated with the front end surface and the rear end surface of the clamping sleeve 61, and the joint part of the limiting groove 611 and the end surface of the clamping sleeve 61 is arranged in a reverse right angle; when the threaded sleeve is installed in the limiting groove 611, the limiting groove 611 is attached to each side surface of the threaded sleeve.

As shown in fig. 3 and 4, a plurality of first ball bearings 62 whose outer rings are fixed to the support frame 6 are respectively sleeved on the outer wall of each clamping sleeve 61, and a second ball bearing 63 whose inner ring is fixed to the threaded joint 21 (or the sealing element 5) is respectively fixed to the portion where each clamping sleeve 61 is connected to the threaded joint 21 (or the sealing element 5).

As shown in fig. 2 and fig. 5, the propelling assembly 8 includes two guide rods 81 respectively located at two sides of the frame 1 and arranged along the length direction of the frame 1, two propelling plates 83 respectively located at two ends of the frame 1 and having two ends respectively sleeved on the two guide rods 81, and a cylinder 82 having a plurality of cylinder bodies fixed on the frame 1 and having too few rods fixed with the propelling plates 83 for propelling the propelling plates 83; wherein, a plurality of clamping grooves 831 are arranged on the pushing plate 83 at equal intervals along the length direction of the pushing plate 83 and communicated with the upper side surface of the pushing plate 83, and each clamping groove 831 is provided with a rubber pad 84 with a U-shaped cross section.

When the rubber pipe assembly is placed, the steel joint is placed in the clamping groove 831, so that the steel joint is clamped by the rubber pad 84, and one surface of the push plate 83, which is close to the threaded joint 21 (or the sealing element 5), is abutted against one surface of the threaded sleeve, which is far away from the threaded joint 21 (or the sealing element 5).

Referring to fig. 1 and 6, the transmission device includes a motor 72 fixed on the frame 1, a plurality of chain wheels 71 fixed on one end of each clamping sleeve 61 extending out of the supporting frame 6 and on the motor shaft of the motor 72, and a chain 73 engaged with each chain wheel 71; the motor 72 can drive the chain 73 to rotate, so that each sprocket 71 can drive each clamping sleeve 61 to rotate synchronously.

Example two: as shown in fig. 7, the difference from the first embodiment is that the transmission device includes a motor 72 fixed on the frame 1, a plurality of pulleys 74 fixed on the ends of the clamping sleeves 61 extending out of the supporting frame 6 and on the motor shaft of the motor 72, and a belt 75 engaged with the pulleys 74, wherein the pulleys 74 and the belt 75 are provided with saw-toothed lines engaged with each other.

Compared with the first embodiment, the second embodiment has a certain transmission ratio, high transmission precision, high rotating speed, large transmission torque ratio and belt transmission, long service life, but the chain 73 is not easy to adjust and fall off after being worn. The second embodiment has the advantages of low transmission noise and larger transmission distance, but has the defect of slippage.

The working process of the invention is as follows:

the rubber pipe assembly is horizontally placed on the rack 1, then steel part joints at two ends of the rubber pipe assembly are installed on the pushing plates 83, then threaded sleeves at two ends of the rubber pipe are respectively installed in the threaded joints 21 (or the sealing parts 5), then piston rods of the control cylinders 82 push the pushing plates 83, so that the pushing plates 83 can push the threaded sleeves into the clamping sleeves 61, the threaded sleeves can be tightly abutted against the threaded joints 21 (or the sealing parts 5), finally the clamping sleeves 61 are controlled to rotate through the transmission device, when the transmission device controls the clamping sleeves 61 to rotate, a pushing force is applied to the threaded sleeves through the pushing component 8, and the threaded sleeves can be connected with the threaded joints 21 (or the sealing parts 5) in a threaded mode.

It should be noted that the sealing member 5 is fixed on the frame 1, and specifically, a mounting plate is fixed on the frame 1, and each sealing plate is fixed on the mounting plate by welding.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides an automatic device of twisting of hydrostatic testing machine which characterized in that: the steel joint self-rotating device comprises support frames (6) which are arranged at two ends of a rack (1) and are parallel to a hydraulic pipe (2), a plurality of clamping sleeves (61) which are respectively connected to the two support frames (6) in a rotating mode, and two transmission assemblies (7) which are respectively arranged at two ends of the rack (1) and are used for respectively driving the clamping sleeves (61) at the two ends of the rack (1) to rotate, wherein the clamping sleeves (61) at the two ends of the rack (1) are respectively sleeved on each threaded joint (21) and each sealing element (5), each clamping sleeve (61) is provided with a limiting groove (611) which is communicated with two ends of the clamping sleeve (61) and is attached to each side face of the threaded sleeve, two ends of the rack (1) are respectively connected with a pushing plate (83) in a sliding mode along the width direction of the rack (1), each pushing plate (83) is provided with a plurality of clamping grooves (831) which are communicated with the upper side face of the pushing plate (83) and are used for placing, and a plurality of air cylinders (82) which are respectively used for driving the propulsion plate (83) to move along the length direction of the frame (1) are arranged on both sides of the frame (1).

2. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: the outer wall of each clamping sleeve (61) is sleeved with a plurality of first ball bearings (62), and the outer ring of each first ball bearing (62) is fixed with the support frame (6).

3. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: each inner wall of the clamping sleeve (61) and the joint part at the two ends of the clamping sleeve (61) are arranged in a reverse right angle.

4. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: second ball bearings (63) are fixed on the inner walls of the clamping sleeves (61), and inner rings of the second ball bearings (63) are fixed to the outer walls of the threaded joints (21) or the sealing elements (5).

5. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: the transmission assembly (7) comprises a motor (72) fixed on the side edge of the rack (1), chain wheels (71) fixed with the outer walls of the sleeves and the motor shafts of the motor (72) respectively, and chains (73) which are arranged in the width direction of the rack (1) and meshed with the chain wheels (71) on the same vertical surface.

6. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: the transmission assembly (7) comprises a motor (72) fixed on the side edge of the rack (1), belt pulleys (74) fixed with the outer walls of the sleeves and the motor shafts of the motor (72) respectively, and belts (75) arranged in the width direction of the rack (1) and matched with the belt pulleys (74) on the same vertical surface.

7. The automatic screwing device of the hydrostatic testing machine according to claim 6, characterized in that: the belt pulleys (74) and the belt (75) are provided with saw-toothed lines which are meshed with each other.

8. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: rubber pads (84) are arranged in the clamping grooves (831).

9. The automatic screwing device of the hydrostatic testing machine according to claim 1, characterized in that: the two sides of each rack (1) are respectively provided with a guide rod (81) arranged along the length direction of the rack (1), and the two ends of each pushing plate (83) are respectively sleeved on the two guide rods (81).