CN114235589A - Clamp of hydrostatic testing machine for pipes - Google Patents
Clamp of hydrostatic testing machine for pipes Download PDFInfo
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- CN114235589A CN114235589A CN202111492207.1A CN202111492207A CN114235589A CN 114235589 A CN114235589 A CN 114235589A CN 202111492207 A CN202111492207 A CN 202111492207A CN 114235589 A CN114235589 A CN 114235589A
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- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009530 blood pressure measurement Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Jigs For Machine Tools (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to the technical field of pipe pressure measurement, in particular to a clamp of a pipe hydrostatic testing machine, which comprises a first clamp body, a second clamp body and a liquid inlet pipe, wherein the first clamp body is arranged at one end of a pipe, and the second clamp body is arranged at the other end of the pipe; the first clamp body and the second clamp body both comprise a main body and a clamping sealing assembly, a placing groove for placing a pipe is formed in the main body, and the cross section of the placing groove is larger than that of the pipe; the clamping and sealing assembly is arranged on the main body and tightly abuts against the pipe; the liquid inlet pipe is arranged on the main body of the first clamp body and communicated with the pipe. This application has the effect that improves anchor clamps application scope.
Description
Technical Field
The application relates to the technical field of pipe pressure measurement, in particular to a clamp of a hydrostatic testing machine for pipes.
Background
The hydrostatic test of the pipe is used for measuring the pressure-resistant failure time or the maximum pressure value of instantaneous explosion of various pipes such as thermoplastic pipes, composite pipes, aluminum-plastic composite pipes and the like under long-time constant internal pressure and constant temperature, and is an important experiment for inspecting the performance of the plastic pipes.
At present, a chinese patent with publication number CN104931340A discloses a sealing clamp for a pipe hydrostatic resistance test, which includes a front end plug, a rear end plug, a pull rod and a sealing ring, wherein the front end plug is provided with a triangular threaded hole and a pipe threaded hole; the periphery of the front end plug and the periphery of the rear end plug are provided with flange holes, and the inner walls of the front end plug and the rear end plug are provided with independent grooves; a sealing ring is embedded in the independent groove; the pull rod sequentially penetrates through corresponding flange holes in the front end plug and the rear end plug, and then the two ends of the pull rod are fixed by nuts.
In the process of implementing the application, the inventor finds that at least the following problems exist in the technology: in order to reduce the leakage of medium water, the inner wall of the front end plug and the inner wall of the rear end plug both abut against the side wall of the pipe; therefore, when the diameter of the pipe changes, the front end plug and the rear end plug need to be replaced, so that the application range of the clamp is low.
Disclosure of Invention
In order to improve the application range of the clamp, the application provides a clamp of a hydrostatic testing machine for pipes.
The application provides a hydrostatic testing machine's of tubular product anchor clamps adopts following technical scheme:
the clamp of the hydrostatic testing machine for the pipe comprises a first clamp body, a second clamp body and a liquid inlet pipe, wherein the first clamp body is arranged at one end of the pipe, and the second clamp body is arranged at the other end of the pipe; the first clamp body and the second clamp body both comprise a main body and a clamping sealing assembly, a placing groove for placing a pipe is formed in the main body, and the cross section of the placing groove is larger than that of the pipe; the clamping and sealing assembly is arranged on the main body and tightly abuts against the pipe; the liquid inlet pipe is arranged on the main body of the first clamp body and communicated with the pipe.
By adopting the technical scheme, the cross section of the placing groove is larger than that of the pipes, so that the pipes with different diameters can be positioned in the placing groove; when the pipe abuts against the bottom wall of the placing groove, the clamping and sealing assembly abuts against the pipe; finally, medium water is introduced into the pipe from the liquid inlet pipe, and the clamping sealing assembly can reduce the medium water from flowing out of the main body; the clamp can clamp pipes with different diameters, so that the application range is widened.
Optionally, the clamping and sealing assembly includes a clamping air cushion, an air inlet pipe and an air pump, an annular groove is formed in a side wall of the placing groove, the clamping air cushion is arranged on a side wall of the annular groove, one end of the air inlet pipe is connected with the clamping air cushion, and the other end of the air inlet pipe is located outside the main body; the air pump is connected with one end, far away from the clamping air cushion, of the air inlet pipe.
Through adopting above-mentioned technical scheme, after the diapire of tubular product conflict standing groove, start the air pump, the air pump air feed in towards the air inlet pipe, in the gas in the air inlet pipe will enter into the centre gripping air cushion, deformation can take place for the centre gripping air cushion, makes the centre gripping air cushion support tightly the tubular product that is located the standing groove.
Optionally, the main body is provided with a limiting mechanism, the limiting mechanism includes a connecting plate, a limiting bolt, a limiting plate and a guide block, the main body is provided with a limiting groove communicated with the placing groove, and a side wall of the placing groove is provided with a guide groove; the connecting plate is clamped in the limiting groove, and the limiting bolt penetrates through the limiting plate to be in threaded connection with the main body; the limiting plate is arranged on the connecting plate, and one end of the limiting plate, which is far away from the connecting plate, abuts against the clamping air cushion; the guide block is arranged on the limiting plate and is arranged in a sliding mode with the guide groove.
By adopting the technical scheme, the limiting plate is abutted against the clamping air cushion, so that the phenomenon that the clamping air cushion is damaged due to the fact that the pipe impacts the clamping air cushion when the pipe enters the placing groove can be reduced; after the tubular product was located the standing groove, made earlier to inject bolt and main part separately, then made the connecting plate towards the direction motion of keeping away from the main part, the limited plate on the connecting plate will no longer contradict the centre gripping air cushion and take out from the standing groove of main part.
Optionally, an adjusting groove communicated with the limiting groove is formed in the main body, an ejection mechanism is arranged on the main body, the ejection mechanism comprises an ejection block, an adjusting shaft, an adjusting gear and an adjusting rack, and the ejection block is slidably arranged in the adjusting groove and can abut against the connecting plate; the adjusting shaft is rotatably arranged on the main body, and one end of the adjusting shaft is positioned in the adjusting groove; the adjusting gear is arranged on the adjusting shaft in the adjusting groove; the adjusting rack is arranged on the ejection block and meshed with the adjusting gear.
Through adopting above-mentioned technical scheme, when the distance between tubular product lateral wall and the standing groove lateral wall is littleer, rotate the regulating spindle, the last adjusting gear of regulating spindle drives the regulation rack and removes, and the regulation rack drives ejecting piece motion, and ejecting piece is contradicted the connecting plate and is driven the connecting plate motion, makes the connecting plate move out of the restricted groove, and operating personnel takes the connecting plate again at last, makes the restricted plate move out of the main part.
Optionally, the main body includes a first connecting body, a second connecting body, a connecting bolt and a nut, the first connecting body is provided with an accommodating groove, the second connecting body is provided with a first through hole, and the accommodating groove and the first through hole together form the placing groove; the end part of the pipe penetrates through the first through hole and is positioned in the accommodating groove, and the liquid inlet pipe is arranged on the first connecting body of the first clamp body; the clamping and sealing assembly is arranged on the second connecting body; the first connecting body is provided with a second through hole, and the second connecting body is provided with a third through hole; the connecting bolt sequentially penetrates through the third through hole and the second through hole, a nut of the connecting bolt abuts against the second connecting body, and the nut is in threaded connection with one end, penetrating through the second through hole, of the connecting bolt.
By adopting the technical scheme, the second connecting body props against the first connecting body, then the connecting bolt penetrates through the third through hole and the second through hole, then the nut is in threaded connection with one end of the connecting bolt penetrating through the second through hole, the nut props against the first connecting body, and the nut of the connecting bolt props against the second connecting body; then enabling the end part of the pipe to penetrate through the first through hole to abut against the bottom wall of the accommodating groove; and finally, starting the clamping and sealing assembly to clamp the pipe positioned in the first through hole.
Optionally, a reinforcing mechanism is arranged on the second connecting body, the reinforcing mechanism includes a fixing block, a mounting bolt, a reinforcing block and an adjusting assembly, a fourth through hole is formed in the fixing block, the outer side wall of the second connecting body abuts against the side wall of the fourth through hole, and the mounting bolt penetrates through the fixing block and is in threaded connection with the second connecting body; the reinforcing blocks are two, the adjusting assembly comprises an adjusting motor and a bidirectional screw rod, the adjusting motor is arranged on the fixing block, the bidirectional screw rod is arranged on the adjusting motor, the bidirectional screw rod penetrates through the two reinforcing blocks, and the two reinforcing blocks are respectively in threaded connection with the two ends of the bidirectional screw rod.
By adopting the technical scheme, the outer side wall of the second connector is abutted against the side wall of the fourth through hole, and then the mounting bolt penetrates through the fixing block to be in threaded connection with the second connector; after the pipe passes through the first through hole and is located the holding tank, the output shaft of adjusting motor drives two-way screw rod and rotates, and two-way screw rod drives two reinforcing blocks and is the opposite motion, makes two reinforcing blocks support tight pipe to improve the stability of pipe on anchor clamps.
Optionally, the adjusting mechanism further comprises an adjusting mechanism, the adjusting mechanism comprises an adjusting rod, an adjusting block and an adjusting assembly, a first sliding groove is formed in the adjusting rod, and the adjusting block is arranged in the first sliding groove in a sliding manner; the main body of the first fixture body is connected to the adjusting rod, and the main body of the second fixture body is arranged on the adjusting block; the adjusting assembly comprises an adjusting motor and an adjusting screw rod, the adjusting screw rod is rotatably arranged in the first sliding groove, and the adjusting screw rod penetrates through the adjusting block to be in threaded connection with the adjusting block; the adjusting motor is arranged on the adjusting rod and connected with the adjusting screw rod.
By adopting the technical scheme, one end of the pipe is firstly put into the placing groove of the first clamp body, then the adjusting motor is started, the adjusting screw rod is enabled to drive the adjusting block to move, the adjusting block drives the main body of the second clamp body to move towards the direction close to the first clamp body, the other end of the pipe is put into the placing groove of the second clamp body, and the two ends of the pipe can better abut against the bottom wall of the placing groove; the first clamp body and the second clamp body can better clamp the pipe by the aid of the arranged adjusting mechanism.
Optionally, a connecting mechanism connected with the main body is arranged on the adjusting block, the connecting mechanism comprises a clamping block and a fixing bolt, the clamping block is arranged on the main body, and a clamping groove clamped with the clamping block is formed in the adjusting block; the fixing bolt penetrates through the adjusting block and is in threaded connection with the clamping block positioned in the clamping groove.
By adopting the technical scheme, the medium water enters the pipe from the liquid inlet pipe, and then the medium water flow can impact the second clamp body; when the second fixture body is damaged, the fixing bolt is firstly rotated to separate the fixing bolt from the fixture block, then the fixture block is separated from the clamping groove on the adjusting block, and the second fixture body is maintained.
Optionally, a support mechanism is arranged on the adjusting rod, the support mechanism includes a connecting block, a sliding block, a supporting block and a lifting assembly, the connecting block is arranged on the adjusting rod, a second sliding groove is formed in the connecting block, and the sliding block is slidably arranged in the second sliding groove; the supporting block is arranged on the sliding block; the lifting assembly comprises a lifting motor, an adjusting gear and an adjusting rack, the lifting motor is arranged on the connecting block, and the adjusting gear is arranged on the lifting motor; the adjusting rack is arranged on the sliding block and meshed with the adjusting gear.
By adopting the technical scheme, the pipe to be detected is placed on the supporting block, then the adjusting motor is started, the pipe enters the placing groove of the second clamp body, and one end of the pipe is abutted against the bottom wall of the placing groove of the second clamp body; then, under the movement of the second clamp body, the pipe moves towards the direction close to the first clamp body, and the other end of the pipe abuts against the bottom wall of the placing groove of the first clamp body; when the diameter of the pipe changes, a lifting motor is started, an adjusting gear on the lifting motor drives an adjusting rack to move, the adjusting rack drives a sliding block to slide, and the position of a supporting block on the sliding block changes; therefore, the supporting mechanism can reduce the operation of installing the pipe by an operator, and the installation efficiency of the clamp is improved.
In summary, the present application includes the following beneficial technical effects:
1. the arranged clamp can clamp pipes with different diameters, so that the application range is improved;
2. the stability of the pipe on the clamp can be improved by the arranged reinforcing mechanism;
3. the supporting mechanism can reduce the operation of installing the pipe by an operator, so that the installation efficiency of the clamp is improved.
Drawings
FIG. 1 is a schematic structural diagram of a clamp of a hydrostatic pipe testing machine according to an embodiment of the present disclosure;
FIG. 2 is an exploded view of a second clamp body in an embodiment of the present application;
FIG. 3 is a schematic view of a clamping seal assembly according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an adjustment mechanism in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a lifting assembly in an embodiment of the present application.
Reference numerals: 11. a first clamp body; 12. a second clamp body; 13. a liquid inlet pipe; 2. a main body; 21. a first connecting body; 211. accommodating grooves; 212. a second through hole; 22. a second connector; 221. a first through hole; 23. a connecting bolt; 24. a nut; 3. clamping the seal assembly; 31. clamping the air cushion; 32. an air inlet pipe; 33. an air pump; 4. a limiting mechanism; 41. a connecting plate; 42. a restraining bolt; 43. a limiting plate; 44. a guide block; 5. an ejection mechanism; 51. ejecting a block; 52. an adjustment shaft; 53. an adjusting gear; 54. adjusting the rack; 6. a reinforcement mechanism; 61. a fixed block; 611. a fourth via hole; 62. installing a bolt; 63. a reinforcing block; 64. an adjustment assembly; 641. adjusting the motor; 642. a bidirectional screw; 7. an adjustment mechanism; 71. an adjusting lever; 711. a first chute; 72. an adjusting block; 73. an adjustment assembly; 731. adjusting the motor; 732. adjusting the screw rod; 8. a connecting mechanism; 81. a clamping block; 82. fixing the bolt; 9. a support mechanism; 91. connecting blocks; 911. a second chute; 92. a slider; 93. a support block; 94. a lifting assembly; 941. a lifting motor; 942. adjusting the gear; 943. adjusting the rack; 95. a support rod.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a clamp of a hydrostatic testing machine for pipes.
Referring to fig. 1, the clamp of the hydrostatic tubing testing machine includes a first clamp body 11, a second clamp body 12, and an adjusting mechanism 7 connecting the first clamp body 11 and the second clamp body 12; the first clamp body 11 is provided with a liquid inlet pipe 13.
Clamping one end of a pipe to be detected by using a first clamp body 11, and clamping the other end of the pipe by using a second clamp body 12; then medium water is introduced into the pipe through the liquid inlet pipe 13.
Referring to fig. 1 and 2, each of the first and second clamp bodies 11 and 12 includes a main body 2, the main body 2 includes a first connecting body 21, and an accommodating groove 211 is formed at one end of the first connecting body 21 along a length direction thereof; the second connector 22 is disposed on one side of the first connector 21, and the second connector 22 has a first through hole 221 along a length direction thereof. The first connecting body 21 is provided with a second through hole 212, and the second connecting body 22 is provided with a third through hole; a connecting bolt 23 is arranged on the second connecting body 22, and one end of the connecting bolt 23, which is far away from the nut, sequentially passes through the third through hole of the second connecting body 22 and the second through hole 212 of the first connecting body 21; one end of the connecting bolt 23 penetrating through the second through hole 212 is connected with a nut 24 in a threaded manner, the nut 24 abuts against the first connecting body 21, and the nut of the connecting bolt 23 abuts against the second connecting body 22. The liquid inlet pipe 13 is disposed on the first connection body 21 of the first clamp body 11, and the liquid inlet pipe 13 is communicated with the accommodation groove 211 of the first clamp body 11.
The axis of the first through hole 221 coincides with the axis of the receiving groove 211, and the first through hole 221 of the second connecting body 22 and the receiving groove 211 of the first connecting body 21 together form the receiving groove 211; the end of the tube passes through the first through hole 221 of the second connector 22 and abuts against the bottom wall of the receiving groove 211 of the first connector 21.
Referring to fig. 2 and 3, an annular groove communicated with the first through hole 221 is formed in the second connecting block 91, a clamping and sealing assembly 3 is arranged on the second connecting block 91, the clamping and sealing assembly 3 includes a clamping air cushion 31 fixedly connected to the bottom wall of the annular groove, an air inlet pipe 32 is connected to the clamping air cushion 31, one end, away from the clamping air cushion 31, of the air inlet pipe 32 penetrates out of the second connecting body 22, an air pump 33 is arranged on one side of the second connecting body 22, and the air pump 33 is connected with one end, away from the clamping air cushion 31, of the air inlet pipe 32.
After the pipe abuts against the bottom wall of the accommodating groove 211 of the first connecting body 21, the air pump 33 is started, the air pump 33 supplies air towards the air inlet pipe 32, the air in the air inlet pipe 32 enters the clamping air cushion 31, and the clamping air cushion 31 deforms, so that the clamping air cushion 31 abuts against the pipe located in the first through hole 221.
Referring to fig. 2 and 3, a limiting groove communicated with the first through hole 221 is formed in one end of the second connecting block 91, which is far away from the first connecting block 91, and a guide groove communicated with the limiting groove is formed in the side wall of the first through hole 221 along the length direction thereof; the second connecting block 91 is provided with a limiting mechanism 4, the limiting mechanism 4 comprises a connecting plate 41 clamped in a limiting groove, a limiting plate 43 is integrally arranged on the connecting plate 41, and one end of the limiting plate 43, which is far away from the connecting plate 41, is abutted against the clamping air cushion 31; the limiting plate 43 is fixedly connected with a guide block 44, and the guide block 44 is arranged in the guide groove in a sliding manner; the connecting plate 41 is provided with a limit bolt 42 which is threaded through the connecting plate 41 and connected with the second connecting body 22.
The limiting plate 43 enters the first through hole 221 of the second connecting body 22, and the guide block 44 slides into the guide groove of the second connecting plate 41; then the limiting plate 43 is pressed against and clamped with the air cushion 31, the connecting plate 41 is connected with the limiting groove of the second connecting body 22, and finally the limiting bolt 42 is threaded with the second connecting body 22 through the connecting plate 41.
Referring to fig. 2 and 3, in order to take out the limiting plate 43 from the second connecting body 22, the second connecting body 22 is provided with an ejection mechanism 5, the second connecting body 22 is provided with an adjusting groove communicated with the limiting groove, the ejection mechanism 5 comprises an ejection block 51 slidably connected in the adjusting groove, and the ejection block 51 can abut against the connecting plate 41 and drive the connecting plate 41 to move; an adjusting shaft 52 is rotatably connected to the second connecting body 22, one end of the adjusting shaft 52 is located in the adjusting groove, and an adjusting gear 53 is keyed on the adjusting shaft 52 located in the adjusting groove; the ejector block 51 is integrally provided with an adjusting rack 54 engaged with the adjusting gear 53.
After the clamping air cushion 31 clamps the pipe, the adjusting shaft 52 is rotated, the adjusting shaft 52 drives the adjusting gear 53 to rotate, the adjusting gear 53 drives the adjusting rack 54 to move, the adjusting rack 54 drives the ejection block 51 to move towards the direction close to the connecting plate 41, and the ejection block 51 props against the connecting plate 41 and drives the connecting plate 41 to move, so that the connecting plate 41 is separated from the limiting groove on the second connecting body 22, and the guide block 44 on the limiting plate 43 can slide in the guide groove of the second connecting body 22; when the connecting plate 41 is separated from the limiting groove on the second connecting body 22, the operator takes the connecting plate 41 and drives the connecting plate 41 to move, so that the limiting plate 43 on the connecting plate 41 moves out of the second connecting body 22.
Referring to fig. 2 and 4, in order to improve the stability of the pipe on the second connecting body 22, a reinforcing mechanism 6 is disposed on one end of the second connecting body 22 away from the first connecting body 21, the reinforcing mechanism 6 includes a fixing block 61, a fourth through hole 611 is disposed on the fixing block 61, the outer side wall of the second connecting body 22 abuts against the side wall of the fourth through hole 611, and a mounting bolt 62 penetrating through the fixing block 61 and in threaded connection with the second connecting body 22 is disposed on the fixing block 61; a third sliding groove is formed in the fixing block 61, and two reinforcing blocks 63 are connected to the third sliding groove in a sliding manner. An adjusting assembly 64 is arranged on the fixed block 61, the adjusting assembly 64 comprises a bidirectional screw 642 rotatably connected in the third sliding chute, the bidirectional screw 642 penetrates through the two reinforcing blocks 63, and the two reinforcing blocks 63 are respectively in threaded connection with two ends of the bidirectional screw 642; an adjusting motor 641 is fixedly connected to the fixing block 61, and an output shaft of the adjusting motor 641 is connected to one end of the bidirectional screw 642.
After the clamping air cushion 31 clamps the tube, the adjusting motor 641 is started, an output shaft of the adjusting motor 641 drives the two-way screw 642 to rotate, and the two-way screw 642 drives the two reinforcing blocks 63 to move in opposite directions, so that the two reinforcing blocks 63 clamp the tube.
Referring to fig. 2 and 4, the adjusting mechanism 7 includes an adjusting rod 71, the fixing block 61 of the first clamp body 11 is connected to one end of the adjusting rod 71 through a bolt, a first sliding groove 711 is formed in the other end of the adjusting rod 71, and an adjusting block 72 is slidably connected to the first sliding groove 711. The adjusting rod 71 is provided with an adjusting assembly 73, the adjusting assembly 73 comprises an adjusting screw 732 which is rotatably connected in the first sliding groove 711, and the adjusting screw 732 passes through the adjusting block 72 and is in threaded connection with the adjusting block 72; an adjusting motor 731 is fixedly connected to the adjusting rod 71, and an output shaft of the adjusting motor 731 is connected to one end of the adjusting screw 732.
The adjusting block 72 is provided with a clamping groove, the fixing block 61 of the second fixture body 12 is provided with a connecting mechanism 8, the connecting mechanism 8 comprises a clamping block 81 fixedly connected to the fixing block 61, and the clamping block 81 is clamped with the clamping groove on the adjusting block 72; the adjusting block 72 is provided with a fixing bolt 82 which passes through the adjusting block 72 and is in threaded connection with a clamping block 81 positioned in the clamping groove.
Referring to fig. 4 and 5, a supporting mechanism 9 is arranged on the adjusting rod 71, the supporting mechanism 9 includes a connecting block 91 fixedly connected to the adjusting rod 71, a second sliding groove 911 is formed in the connecting block 91, a sliding block 92 is connected to the second sliding groove 911 in a sliding manner, a supporting rod 95 is fixedly connected to the sliding block 92, and a supporting block 93 is fixedly connected to one end, far away from the sliding block 92, of the supporting rod 95. A lifting assembly 94 is arranged on the connecting block 91, the lifting assembly 94 comprises a lifting motor 941 fixedly connected to the connecting block 91, and an output shaft of the lifting motor 941 is in keyed connection with an adjusting gear 942; an adjusting rack 943 engaged with the adjusting gear 942 is fixedly connected to the slider 92.
The lifting motor 941 is started according to the diameter of the pipe, the output shaft of the lifting motor 941 drives the adjusting gear 942 to rotate, the adjusting gear 942 drives the adjusting rack 943 to move, the adjusting rack 943 drives the slider 92 to move, the supporting rod 95 on the slider 92 drives the supporting block 93 to move, the pipe is placed on the supporting block 93, and the axis of the pipe on the supporting block 93 is coincident with the axis of the first through hole 221 on the second connector 22.
Then, the adjusting motor 731 is started, an output shaft of the adjusting motor 731 drives the adjusting screw 732 to rotate, the adjusting screw 732 drives the adjusting block 72 to move, the adjusting block 72 drives the fixture block 81 to move, the fixture block 81 drives the fixing block 61 of the second clamp body 12 to move towards the direction close to the first clamp body 11, and one end of the pipe close to the second clamp body 12 is firstly made to penetrate through the first through hole 221 of the second clamp body 12 and abut against the bottom wall of the accommodating groove 211 of the second clamp body 12; then the first connecting body 21 of the second clamp body 12 drives the tube to move towards the direction close to the first clamp body 11, so that the end of the tube far from the second clamp body 12 penetrates through the first through hole 221 of the first clamp body 11 and butts against the bottom wall of the accommodating groove 211 of the first clamp body 11.
The implementation principle of the clamp of the hydrostatic testing machine for the pipes is as follows: the position of the supporting block 93 is adjusted according to the diameter of the pipe to be detected; the pipe to be tested is then placed on the support block 93.
Then, the adjusting motor 731 is started, so that one end of the pipe to be detected abuts against the bottom wall of the accommodating groove 211 of the second clamp body 12, and the other end of the pipe abuts against the bottom wall of the accommodating groove 211 of the first clamp body 11; then starting the air pump 33 to make the clamping air cushion 31 clamp the pipe; the limiting plate 43 is removed from the second connecting body 22, the two reinforcing blocks 63 then clamp the pipe, and finally the medium water is introduced into the pipe through the liquid inlet pipe 13.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The clamp of the hydrostatic testing machine for the pipe comprises a first clamp body (11), a second clamp body (12) and a liquid inlet pipe (13), wherein the first clamp body (11) is arranged at one end of the pipe, and the second clamp body (12) is arranged at the other end of the pipe; the pipe clamping device is characterized in that the first clamp body (11) and the second clamp body (12) both comprise a main body (2) and a clamping sealing assembly (3), a placing groove for placing a pipe is formed in the main body (2), and the cross section of the placing groove is larger than that of the pipe; the clamping sealing component (3) is arranged on the main body (2) and tightly abuts against the pipe; the liquid inlet pipe (13) is arranged on the main body (2) of the first clamp body (11) and is communicated with a pipe.
2. The clamp of the hydrostatic testing machine for the tubular products as claimed in claim 1, wherein the clamping sealing assembly (3) comprises a clamping air cushion (31), an air inlet pipe (32) and an air pump (33), wherein an annular groove is formed on a side wall of the placing groove, the clamping air cushion (31) is arranged on a side wall of the annular groove, one end of the air inlet pipe (32) is connected with the clamping air cushion (31), and the other end of the air inlet pipe is located outside the main body (2);
the air pump (33) is connected with one end of the air inlet pipe (32) far away from the clamping air cushion (31).
3. The clamp of the hydrostatic testing machine for the tubular products as claimed in claim 2, wherein the main body (2) is provided with a limiting mechanism (4), the limiting mechanism (4) comprises a connecting plate (41), a limiting bolt (42), a limiting plate (43) and a guide block (44), the main body (2) is provided with a limiting groove communicated with the placing groove, and the side wall of the placing groove is provided with a guide groove;
the connecting plate (41) is clamped in the limiting groove, and the limiting bolt (42) penetrates through the limiting plate (43) to be in threaded connection with the main body (2);
the limiting plate (43) is arranged on the connecting plate (41), and one end, far away from the connecting plate (41), of the limiting plate (43) abuts against the clamping air cushion (31);
the guide block (44) is arranged on the limiting plate (43) and is arranged in a sliding mode with the guide groove.
4. The clamp of the hydrostatic testing machine for the tubular products as claimed in claim 3, wherein the main body (2) is provided with an adjusting groove communicated with the limiting groove, the main body (2) is provided with an ejection mechanism (5), the ejection mechanism (5) comprises an ejection block (51), an adjusting shaft (52), an adjusting gear (53) and an adjusting rack (54), and the ejection block (51) is slidably arranged in the adjusting groove and can abut against the connecting plate (41);
the adjusting shaft (52) is rotatably arranged on the main body (2), and one end of the adjusting shaft (52) is positioned in the adjusting groove; the adjusting gear (53) is arranged on the adjusting shaft (52) positioned in the adjusting groove; the adjusting rack (54) is arranged on the ejection block (51) and meshed with the adjusting gear (53).
5. The clamp of the hydrostatic testing machine for the tubular products as claimed in claim 1, wherein the main body (2) comprises a first connecting body (21), a second connecting body (22), a connecting bolt (23) and a nut (24), the first connecting body (21) is provided with a receiving groove (211), the second connecting body (22) is provided with a first through hole (221), and the receiving groove (211) and the first through hole (221) form the placing groove together; the end part of the pipe passes through the first through hole (221) and is positioned in the accommodating groove (211), and the liquid inlet pipe (13) is arranged on the first connecting body (21) of the first clamp body (11); the clamping and sealing assembly (3) is arranged on the second connecting body (22);
a second through hole (212) is formed in the first connecting body (21), and a third through hole is formed in the second connecting body (22); the connecting bolt (23) sequentially penetrates through the third through hole and the second through hole (212), a nut of the connecting bolt (23) is tightly abutted against the second connecting body (22), and the nut (24) is in threaded connection with one end, penetrating through the second through hole (212), of the connecting bolt (23).
6. The clamp of the hydrostatic testing machine for the tubular products as set forth in claim 5, wherein the second connecting body (22) is provided with a reinforcing mechanism (6), the reinforcing mechanism (6) comprises a fixing block (61), a mounting bolt (62), a reinforcing block (63) and an adjusting assembly (64), the fixing block (61) is provided with a fourth through hole (611), the outer side wall of the second connecting body (22) abuts against the side wall of the fourth through hole (611), and the mounting bolt (62) penetrates through the fixing block (61) to be in threaded connection with the second connecting body (22);
the reinforcing blocks (63) are provided with two,
the adjusting assembly (64) comprises an adjusting motor (641) and a bidirectional screw (642), the adjusting motor (641) is arranged on the fixing block (61), the bidirectional screw (642) is arranged on the adjusting motor (641), the bidirectional screw (642) penetrates through the two reinforcing blocks (63), and the two reinforcing blocks (63) are respectively in threaded connection with two ends of the bidirectional screw (642).
7. The clamp of the tubular hydrostatic testing machine according to claim 1, further comprising an adjusting mechanism (7), wherein the adjusting mechanism (7) comprises an adjusting rod (71), an adjusting block (72) and an adjusting assembly (73), a first sliding groove (711) is formed in the adjusting rod (71), and the adjusting block (72) is slidably disposed in the first sliding groove (711); the main body (2) of the first clamp body (11) is connected to the adjusting rod (71), and the main body (2) of the second clamp body (12) is arranged on the adjusting block (72);
the adjusting assembly (73) comprises an adjusting motor (731) and an adjusting screw rod (732), the adjusting screw rod (732) is rotatably arranged in the first sliding groove (711), and the adjusting screw rod (732) penetrates through the adjusting block (72) to be in threaded connection with the adjusting block (72); the adjusting motor (731) is arranged on the adjusting rod (71) and is connected with the adjusting screw rod (732).
8. The clamp of the hydrostatic testing machine for the tubular products as claimed in claim 7, wherein the adjusting block (72) is provided with a connecting mechanism (8) connected with the main body (2), the connecting mechanism (8) comprises a clamping block (81) and a fixing bolt (82), the clamping block (81) is provided on the main body (2), and the adjusting block (72) is provided with a clamping groove clamped with the clamping block (81); the fixing bolt (82) penetrates through the adjusting block (72) and is in threaded connection with the clamping block (81) located in the clamping groove.
9. The clamp of the hydrostatic testing machine for the tubular products as claimed in claim 7, wherein the adjusting lever (71) is provided with a supporting mechanism (9), the supporting mechanism (9) comprises a connecting block (91), a slider (92), a supporting block (93) and a lifting assembly (94), the connecting block (91) is arranged on the adjusting lever (71), the connecting block (91) is provided with a second sliding groove (911), and the slider (92) is slidably arranged in the second sliding groove (911); the supporting block (93) is arranged on the sliding block (92);
the lifting assembly (94) comprises a lifting motor (941), an adjusting gear (942) and an adjusting rack (943), the lifting motor (941) is arranged on the connecting block (91), and the adjusting gear (942) is arranged on the lifting motor (941); the adjusting rack (943) is arranged on the sliding block (92) and is meshed with the adjusting gear (942).
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| CN202111492207.1A CN114235589B (en) | 2021-12-08 | 2021-12-08 | Clamp of pipe hydrostatic testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111492207.1A CN114235589B (en) | 2021-12-08 | 2021-12-08 | Clamp of pipe hydrostatic testing machine |
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| CN114235589B CN114235589B (en) | 2024-04-16 |
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