A triaxial pressure chamber that can be assembled quickly

Abstract

The present invention discloses a triaxial pressure chamber that can be assembled quickly, belonging to the technical field of triaxial instruments. It mainly aims at the problem that the existing triaxial pressure chamber needs to operate multiple fixing bolts one by one during loading and unloading operations, and proposes the following technical scheme, including a pressure chamber body and a fixing seat, wherein the fixing seat is located directly below the pressure chamber body, and a boss is integrally arranged at the center of the top circle of the fixing seat, and a sample table for carrying materials is installed on the top of the boss. The present invention arranges a locking assembly and a sealing member on the fixing seat, and then when the connecting seat in the pressure chamber body is loaded onto the fixing seat, the downward pressure of the connecting seat drives the structural movement in the locking assembly, thereby squeezing the sealing member to expand its sealing part to complete the efficient sealing of the connecting seat, and finally rotating the locking assembly of the pressure chamber body to achieve convenient limit locking of the connecting seat, thereby reducing the burden of manual operation and improving the efficiency of loading and unloading of the triaxial pressure chamber.

Description

Technical Field

[0001] The invention relates to the technical field of triaxial instruments, in particular to a triaxial pressure chamber which can be assembled quickly. Background Art

[0002] The triaxial apparatus is an indispensable instrument for indoor geotechnical testing. The pressure chamber is an important part of the triaxial apparatus, which provides installation space for the specimen and the confining pressure required for the test. The pressure chamber of the triaxial apparatus needs to be convenient for specimen preparation and installation and have a certain degree of sealing.

[0003] The existing pressure chamber is generally cylindrical, and its cylindrical side wall is made of transparent material to form an observation layer, and a circular connecting seat is provided at the bottom of the pressure chamber, and a corresponding fixing seat is provided below the connecting seat, and the fixing seat is also cylindrical. The connecting seat is placed on the fixing seat, and grooves are correspondingly opened on the peripheral sides of the connecting seat and the fixing seat, and bolts are provided in the grooves to achieve stable assembly between the connecting seat and the fixing seat. However, the provision of multiple bolts requires the use of auxiliary tools such as wrenches to adjust the connecting seat and the fixing seat during disassembly and assembly operations, and the operation process is relatively cumbersome.

[0004] There is a Chinese patent with authorization announcement number CN211292305U, which discloses a pressure chamber fixing device for a triaxial instrument, including a fixing rod, one end of which is hinged on the slotted side wall of a fixing seat, and a receiving groove is opened in the fixing rod along its length direction. The control mechanism includes a lead screw and a limiting rod arranged in the receiving groove, and the lead screw and the limiting rod are both arranged along the length direction of the receiving groove. Both ends of the lead screw are rotatably connected in the receiving groove, the lead screw is fixedly connected to a first bevel gear, and the first bevel gear is meshed with a second bevel gear.

[0005] The technical solution in the above patent document replaces the bolt structure used in the prior art with a fixed lock adjusted by a handle. Although it is achieved that there is no need to use auxiliary tools during the disassembly and assembly process, thereby reducing the trouble of operation, the operation of multiple fixed locks one by one still takes a lot of time during the product disassembly and assembly process, reducing the efficiency of product disassembly and assembly. The assembly of the connecting seat and the fixed seat requires the adjustment of multiple fixed locks to ensure the stability and sealing of the assembly of the two. However, it is difficult to maintain the consistency of the adjustment of multiple fixed locks during the process of operating and adjusting them one by one, which leads to hidden dangers of sealing and stability of the connecting seat and the fixed seat during the assembly process. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a three-axis pressure chamber that can be quickly assembled, by arranging a locking assembly and a sealing member on a fixed seat, and then when the connecting seat in the pressure chamber body is loaded onto the fixed seat, the downward pressure of the connecting seat drives the structure in the locking assembly to move, thereby squeezing the seal to expand its sealing portion to complete the efficient sealing of the connecting seat, and finally the locking assembly of the pressure chamber body is rotated to achieve convenient limit locking of the connecting seat, assisted by an arc plate and a clamping member to synchronously clamp and fix the bottom end of the rubber holster when the pressure chamber body rotates, thereby improving the convenience of loading the rubber holster while ensuring the sealing effect of the rubber holster, reducing the burden of manual operation, and improving the efficiency of product loading and unloading, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A three-axis pressure chamber that can be quickly assembled comprises a pressure chamber body and a fixed seat, wherein the fixed seat is located directly below the pressure chamber body, a boss is integrally arranged at the center of the top circle of the fixed seat, and a sample table for carrying materials is installed on the top of the boss, wherein a rubber sheath for wrapping materials is sleeved on the outer circumferential wall of the boss, and a clamping piece for clamping the bottom end of the rubber sheath, a sealing piece for ensuring the sealing of the pressure chamber body and the fixed seat, and a locking assembly for locking a connecting seat in the pressure chamber body are arranged in sequence around the boss from the inside to the outside, an airbag pressure regulator for adjusting the internal air pressure of the seal is arranged on the side of the fixed seat, and an arc plate for cooperating with the clamping piece is installed on the connecting seat.

[0009] As a further solution of the present invention, the fixing seat is composed of a base and a disc, wherein the disc is integrally arranged on the top of the base, the boss is located at the top center of the disc, an annular groove is provided at the top edge of the base, an annular embedded groove is provided on the circumferential wall of the disc, and a plurality of through grooves are provided on the top shell wall of the base along the circumferential direction, and the through grooves are used to pass through the annular embedded groove and the annular groove.

[0010] As a further solution of the present invention, the sealing member includes an annular airbag sleeved in the annular embedded groove, the bottom of the annular airbag is integrally formed with a plurality of air guide bags accommodated in the corresponding through grooves, the other end of the air guide bag extends into the annular groove and is integrally formed with an air spreading bag, wherein a gas delivery channel is installed at the bottom of any air guide bag, the other end of the gas delivery channel penetrates the peripheral wall of the base and is installed with an air nozzle, and the airbag pressure regulator is connected to the air nozzle;

[0011] The airbag pressure regulator is composed of a kneading airbag, a hose and a pressure gauge, wherein the kneading airbag and the pressure gauge are connected by a hose, the other end of the pressure gauge is threadedly connected to the air nozzle, and a pressure relief valve for gas pressure relief is provided at the air outlet end of the kneading airbag.

[0012] As a further solution of the present invention, the locking assembly is composed of a locking member, a pressure ring and a release member, wherein the locking member includes a plurality of members, which are respectively arranged on the peripheral wall of the fixing seat along the circumferential direction, and the locking member includes a shell fixedly connected to the slot on the fixing seat, a U-shaped frame is welded on the outer shell wall of the shell, an L-shaped rod is movably connected to the U-shaped frame, the bottom end of the L-shaped rod passes through the outer shell wall of the shell, and a driven wedge is installed, the inclined surface of the driven wedge is slidably connected to the active wedge, a pressing rod is installed on the top of the active wedge, and the top end of the pressing rod passes through the top shell wall of the shell;

[0013] The bottom of the pressing ring is fixedly connected to the top ends of the plurality of pressing rods, and a plurality of extrusion springs 1 located on the corresponding pressing rods are sleeved between the pressing ring and the shell.

[0014] As a further solution of the present invention, a through hole is provided in the vertical portion of the L-shaped rod, in which a connecting rod is movably connected, a wedge-shaped plate is installed on the top end of the connecting rod, a hole is provided on the top shell wall of the U-shaped frame, in which a spring locating pin for plugging into a connecting seat in the main body of the limit pressure chamber is movably connected, an adjustment frame is installed on the top of the spring locating pin, the adjustment frame is in movably contact with the inclined surface of the wedge-shaped plate, a pad located on the top inner wall of the U-shaped frame is installed between the L-shaped rod and the spring locating pin by bolts, and is used to tighten the connecting seat in the main body of the pressure chamber.

[0015] As a further solution of the present invention, the release member includes a support ring located below the U-shaped frame, a plurality of slides are fixedly connected to the top of the support ring, the tops of the plurality of slides are respectively slidably connected to the corresponding U-shaped frames, a plurality of guide grooves are opened along the circumferential direction on the top shell wall of the support ring, and a slider is slidably connected in the guide groove.

[0016] As a further solution of the present invention, rectangular notches are provided on the top and bottom shell walls of the U-shaped frame, the top end of the L-shaped rod passes through the upper rectangular notch, the bottom end of the connecting rod passes through the lower rectangular notch, and is fixedly connected to the corresponding slider.

[0017] As a further solution of the present invention, the spring positioning pin includes a rod body movably connected to the hole, the bottom end of the rod body is rollingly connected to a ball 1, and the top end of the rod body is fixedly connected to a top plate, and a compression spring 2 located on the rod body is sleeved between the top plate and the top shell wall of the U-shaped frame;

[0018] The adjustment frame comprises side frames symmetrically arranged on the top outer wall of the top plate, and rollers are rotatably connected between the symmetrical side frames, and the rollers are in rolling contact with the inclined surface of the wedge plate.

[0019] As a further solution of the present invention, the clamping member includes a plurality of clamping members, which are arranged on the top outer wall of the disc along the circumferential direction, wherein the clamping member includes a straight plate fixedly connected to the top outer wall of the disc, an adjusting rod movably connected to the straight plate, an arc-shaped clamping strip for clamping the rubber holster is installed at one end of the adjusting rod close to the boss, and a second ball is rollingly connected to one end of the adjusting rod away from the boss, and a return spring located on the adjusting rod is sleeved between the arc-shaped clamping strip and the straight plate;

[0020] The arc-shaped plates include a plurality of arc-shaped plates which are arranged at the top end of the inner ring of the connecting seat in the pressure chamber body along the circumferential direction, and the arc-shaped plates are in rolling contact with the second ball.

[0021] As a further solution of the present invention, the top side walls of the multiple slots on the connecting seat in the pressure chamber body are all inclined to facilitate the sliding out of ball one, and a socket for inserting the corresponding spring locating pin is provided between two adjacent slots on the connecting seat.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By arranging a locking assembly and a sealing member on the fixed seat, when the connecting seat in the pressure chamber body is loaded onto the fixed seat, the downward pressure of the connecting seat drives the structural activity in the locking assembly, thereby squeezing the sealing member to expand its sealing portion and completing the efficient sealing of the connecting seat. Finally, the locking assembly of the pressure chamber body is rotated to realize the convenient limit locking of the connecting seat, and the arc plate and the clamping member are used to synchronously clamp and fix the bottom end of the rubber holster when the pressure chamber body rotates. The convenience of loading the rubber holster is improved while ensuring the sealing effect of the rubber holster, the burden of manual operation is reduced, and the efficiency of product loading and unloading is improved.

[0024] 2. Each locking member in the locking assembly uses the wedge structure to cooperate with the spring locating pin at the top position to limit and remove the spring locating pin during the downward movement of the upper pressure ring under force, so as to ensure that the spring locating pin is locked by the limit hole on it during the rotation adjustment after the connecting seat presses the pressure ring, and cooperates with the gasket to realize the synchronous multiple limit locking of the connecting seat on the fixed seat, thereby ensuring the convenience of assembly between the connecting seat and the fixed seat, replacing the existing fixed lock structure, improving the operational efficiency of assembly between the connecting seat and the fixed seat, and shortening the operation time during loading and unloading of the two.

[0025] 3. By sealing the top of the original rubber cover as an integrated whole, loading the air pressure sensor and other components on the sealing end, and then fitting the other end of the rubber cover on the boss on the fixed seat, the material placed on the sample table can be wrapped. Finally, during the rotation and adjustment of the pressure chamber body, the arc plate on it cooperates with the clamping piece placed on the fixed seat to synchronously clamp and seal the bottom of the rubber cover, thereby replacing the existing rubber ring bundling work at both ends, further simplifying the steps of product loading and unloading, improving the efficiency of manual operation, and reducing the labor burden.

[0026] 4. By replacing the existing rubber sealing ring with an extrusion expansion seal, not only is the efficient sealing of the connecting seat in the pressure chamber body guaranteed when it is assembled with the fixed seat, but the expansion of the seal is based on the pressure of the pressure chamber body when it is loaded, so that the connecting seat in the pressure chamber body can reduce friction resistance when loading and unloading with the fixed seat, further reducing the burden of manual operation.

[0027] 5. Through the setting of the release part, when the product needs to be disassembled, it is only necessary to lift and adjust the support ring to cancel the plug-in positioning of the spring positioning pin on the connecting seat in the pressure chamber body, and then the pressure chamber body is rotated in the opposite direction to realize the convenient disassembly operation between the pressure chamber body and the fixed seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a triaxial pressure chamber that can be assembled quickly;

[0029] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0030] Figure 3 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0031] Figure 4 for Figure 3 Schematic diagram of the structure viewed from above;

[0032] Figure 5 for Figure 1 Schematic diagram of the sealing structure;

[0033] Figure 6 for Figure 1 A schematic diagram of a clamping structure;

[0034] Figure 7 for Figure 3 A schematic diagram of a partial cross-sectional structure of a locking assembly;

[0035] Figure 8 for Figure 7 Schematic diagram of the structure viewed from above;

[0036] Fig. 9 for Figure 7 A schematic diagram of a locking member structure;

[0037] Fig.10 for Fig. 9 Schematic diagram of the structure viewed from above;

[0038] Fig.11 for Figure 7 A schematic diagram of the enlarged local structure.

[0039] In the figure: 1. Pressure chamber body; 2. Fixing seat; 3. Sample table; 4. Rubber cover;

[0040] 5. Locking assembly; 51. Locking piece; 511. Housing; 512. U-shaped frame; 513. L-shaped rod; 514. Driven wedge; 515. Active wedge; 516. Pressing rod; 517. Connecting rod; 518. Wedge plate; 519. Pad; 5110. Spring positioning pin; 5111. Adjusting frame;

[0041] 52, pressure ring; 53, release member; 531, support ring; 532, slide plate;

[0042] 6. Sealing member; 61. Annular airbag; 62. Air guide bag; 63. Air spreading bag; 7. Clamping member; 71. Arc-shaped clamping strip; 72. Adjusting rod; 8. Arc-shaped plate; 9. Airbag pressure regulator. DETAILED DESCRIPTION

[0043] See also Figure 1-4 In an embodiment of the present invention, a triaxial pressure chamber that can be quickly assembled includes a pressure chamber body 1 and a fixing seat 2, wherein the fixing seat 2 is located directly below the pressure chamber body 1. The pressure chamber body 1 and the fixing seat 2 fit together, and then the convenient assembly and disassembly operation of the two is realized by means of a clamping limit.

[0044] A boss is integrally arranged at the center of the top of the fixing seat 2, and a sample platform 3 for carrying materials is installed on the top of the boss. A collecting hole for water flow is provided at the center of the boss and the sample platform 3. The setting of the collecting hole realizes the diversion of water in the sample to be tested, so as to judge the test results.

[0045] The outer peripheral wall of the boss is covered with a rubber sheath 4 for wrapping materials. The rubber sheath 4 is used to wrap the sample to be tested on the sample table 3, so as to ensure that the confining pressure can be applied without damaging the sample. The top of the rubber sheath 4 is an integrated closed end, and when loading the rubber sheath 4, only the opening at the bottom needs to be sealed, which simplifies the operation steps.

[0046] The boss is provided with a clamping member 7 for clamping the bottom end of the rubber holster 4, a sealing member 6 for ensuring the sealing of the pressure chamber body 1 and the fixing seat 2, and a locking assembly 5 for locking the connecting seat in the pressure chamber body 1. The side of the fixing seat 2 is provided with an airbag pressure regulator 9 for adjusting the internal air pressure of the sealing member 6. The setting of the airbag pressure regulator 9 can realize the flexible adjustment of the internal air pressure value of the sealing member 6, thereby further ensuring the sealing effect of the sealing member 6.

[0047] The connecting seat is provided with an arc plate 8 for cooperating with the clamping member 7. By assembling the connecting seat and the locking assembly 5 in the pressure chamber body 1, the seal 6 is adjusted synchronously, thereby ensuring the sealing performance when the pressure chamber body 1 and the fixing seat 2 are connected. The arc plate 8 drives the clamping member 7 with the movement of the pressure chamber body 1, thereby synchronously clamping and sealing the bottom end of the rubber holster 4, and realizing convenient loading and unloading operations between the pressure chamber body 1 and the fixing seat 2.

[0048] See also Figure 1-5 In the embodiment of the present invention, the fixing seat 2 is composed of a base and a disc. The disc is integrally arranged on the top of the base, and the boss is located at the top center of the disc. An annular groove is provided at the top edge of the base, and the annular groove is provided to provide a placement and activity space for other structures. An annular embedded groove is provided on the circumferential wall of the disc, and a plurality of through grooves are provided on the top shell wall of the base along the circumferential direction, and the through grooves are used to penetrate the annular embedded groove and the annular groove.

[0049] The sealing member 6 includes an annular airbag 61 sleeved in an annular embedded groove. The bottom of the annular airbag 61 is integrally formed with a plurality of air guide bags 62 accommodated in corresponding through grooves. The other end of the air guide bag 62 extends into the annular groove and is integrally formed with an air spreading bag 63. The annular airbag 61 is provided for extrusion-type contact with the inner wall of the connecting seat, so as to ensure the sealing after the connection between the pressure chamber body 1 and the fixing seat 2, and the configuration of the air guide bag 62 and the air spreading bag 63 realizes the distribution of the gas inside the annular airbag 61, so that the annular airbag 61 is in an unfull state under normal conditions. When the air spreading bag 63 is subjected to force, the gas inside it enters the annular airbag 61 through the air guide bag 62, causing it to swell and become full, thereby achieving a sealing effect.

[0050] An air delivery channel is installed at the bottom of any air guide bag 62, and the other end of the air delivery channel penetrates the peripheral wall of the base and is installed with an air nozzle, and the airbag pressure regulator 9 is connected to the air nozzle. The airbag pressure regulator 9 is an external device of the fixed seat 2, and when the internal air pressure of the sealing member 6 is adjusted, the connection between the airbag pressure regulator 9 and the sealing member 6 needs to be realized through the setting of the air delivery channel.

[0051] The airbag pressure regulator 9 is composed of a kneading airbag, a hose and a pressure gauge. The kneading airbag and the pressure gauge are connected by a hose, and the other end of the pressure gauge is threadedly connected to the air nozzle. The setting of the pressure gauge can observe the internal air pressure of the seal 6, so as to ensure that the seal 6 can be replenished with gas in time when the air pressure is insufficient due to deformation caused by long-term use, so as to avoid affecting its sealing effect. A pressure relief valve for gas pressure relief is provided at the air outlet end of the kneading airbag. The setting of the pressure relief valve enables the airbag pressure regulator 9 to perform pressure relief operation when adjusting the internal air pressure of the seal 6, thereby ensuring the accuracy of the internal air pressure adjustment of the seal 6.

[0052] See also Figure 1 , Figure 7 , Figure 8 and Fig. 9 In the embodiment of the present invention, the locking assembly 5 is composed of a locking member 51, a pressure ring 52 and a release member 53. Among them, there are three locking members 51, which are respectively arranged on the peripheral wall of the fixing seat 2 along the circumferential direction. The cooperation between the locking member 51 and the pressure ring 52 realizes the limit locking of the connecting seat in the pressure chamber body 1, and the setting of the release member 53 can conveniently cancel the limit of the locking member 51 on the connecting seat in the pressure chamber body 1, thereby facilitating the disassembly of the pressure chamber body 1.

[0053] The locking member 51 includes a housing 511 fixedly connected to a slot on the fixing seat 2. A U-shaped frame 512 is welded to the outer wall of the housing 511, and an L-shaped rod 513 is movably connected to the U-shaped frame 512. The bottom end of the L-shaped rod 513 penetrates the outer wall of the housing 511 and is installed with a driven wedge 514. The L-shaped rod 513 is a rectangular rod body, and its penetration of the housing wall of the housing 511 provides guidance assistance during movement.

[0054] The inclined surface of the driven wedge block 514 is slidably connected to the active wedge block 515, and a pressing rod 516 is installed on the top of the active wedge block 515. The top end of the pressing rod 516 penetrates the top shell wall of the shell 511. The inclined surface of the driven wedge block 514 is provided with a T-shaped slide groove, and the inclined surface of the active wedge block 515 is integrally provided with a T-shaped guide bar, and the T-shaped guide bar is slidably connected with the T-shaped slide groove, thereby ensuring the stability of the sliding adjustment between the active wedge block 515 and the driven wedge block 514.

[0055] The bottom of the pressing ring 52 is fixedly connected to the top of a plurality of pressing rods 516, and a plurality of extrusion springs 1 located on the corresponding pressing rods 516 are sleeved between the pressing ring 52 and the housing 511. The provision of the extrusion spring 1 enables the pressing ring 52 to automatically reset in the absence of external force, thereby ensuring the subsequent assembly requirements of the pressure chamber body 1.

[0056] See also Figure 9-11In the embodiment of the present invention, a through hole is formed in the vertical portion of the L-shaped rod 513, in which a connecting rod 517 is movably connected, and a wedge plate 518 is installed at the top of the connecting rod 517. When the L-shaped rod 513 is adjusted in displacement, the connecting rod 517 connected thereto is synchronously displaced, thereby driving the wedge plate 518 to adjust in displacement.

[0057] A hole is provided on the top shell wall of the U-shaped frame 512, and a spring positioning pin 5110 for plugging into the connection seat in the limit pressure chamber body 1 is movably connected in the hole. An adjustment frame 5111 is installed on the top of the spring positioning pin 5110, and the adjustment frame 5111 is in movably contact with the inclined surface of the wedge plate 518. Under the support of the displacement adjustment frame 5111 of the wedge plate 518, the spring positioning pin 5110 is adjusted downward under the action of its own elasticity.

[0058] A pad 519 located on the top inner wall of the U-shaped frame 512 is installed between the L-shaped rod 513 and the spring positioning pin 5110 by bolts, and is used to press the connection seat in the pressure chamber body 1. The setting of the pad 519 enables the connection seat in the pressure chamber body 1 to have a longitudinal limiting effect during the loading process. The material of the pad 519 is various, and rubber material is used in this embodiment.

[0059] See also Figure 8-11 In the embodiment of the present invention, the release member 53 includes a support ring 531 located below the U-shaped frame 512, and a plurality of slide plates 532 are fixedly connected to the top of the support ring 531. The tops of the plurality of slide plates 532 are respectively slidably connected to the corresponding U-shaped frame 512. A plurality of guide grooves are provided on the top shell wall of the support ring 531 along the circumferential direction, and slide plates are slidably connected in the guide grooves. The sliding connection between the slide plate 532 and the U-shaped frame 512 not only ensures the stability of the support ring 531 during adjustment, but also ensures the accuracy of the position of the wedge plate 518 driven by the connecting rod 517 under normal circumstances.

[0060] Rectangular notches are provided on the top and bottom shell walls of the U-shaped frame 512. The top end of the L-shaped rod 513 passes through the upper rectangular notch, and the bottom end of the connecting rod 517 passes through the lower rectangular notch and is fixedly connected to the corresponding slider. The setting of the guide groove and the slider ensures that the connecting rod 517 moves with the L-shaped rod 513 without obstacles.

[0061] See also Figure 9-10 In the embodiment of the present invention, the spring positioning pin 5110 includes a rod body movably connected to the hole, the bottom end of the rod body is rollingly connected to a ball 1, and the top end of the rod body is fixedly connected to a top plate. A compression spring 2 located on the rod body is sleeved between the top plate and the top shell wall of the U-shaped frame 512. The arrangement of the compression spring 2 enables the rod body to be adjusted in the longitudinal direction, and the ball 1 enables the rod body to better engage and limit the connection seat on the pressure chamber body 1.

[0062] The adjustment frame 5111 includes side frames symmetrically arranged on the top outer wall of the top plate, and rollers are rotatably connected between the symmetrical side frames, and the rollers are in rolling contact with the inclined surface of the wedge plate 518. The rolling contact between the rollers and the wedge plate 518 ensures the smoothness of the wedge plate 518 when moving and adjusting.

[0063] See also Figure 1 and Figure 6 In the embodiment of the present invention, the clamping members 7 include three, which are arranged on the top outer wall of the disc along the circumferential direction. The configuration of the three clamping members 7 ensures the sealing clamping effect of the bottom end of the rubber holster 4. Among them, the clamping member 7 includes a straight plate fixedly connected to the top outer wall of the disc, and an adjusting rod 72 is movably connected to the straight plate. An arc-shaped clamping strip 71 for clamping the rubber holster 4 is installed at one end of the adjusting rod 72 close to the boss, and a ball 2 is rollingly connected to the end of the adjusting rod 72 away from the boss. A reset spring located on the adjusting rod 72 is sleeved between the arc-shaped clamping strip 71 and the straight plate. A rubber pad is arranged on the inner arc surface of the arc-shaped clamping strip 71 to ensure that the rubber holster 4 is not damaged when clamped, and the three arc-shaped clamping strips 71 form a relatively complete circle when they are close to each other, thereby ensuring the sealing effect of clamping the bottom end of the rubber holster 4.

[0064] The arc plates 8 include a plurality of arc plates 8, which are arranged at the top of the inner ring of the connecting seat in the pressure chamber body 1 along the circumferential direction, and the arc plates 8 are in rolling contact with the second ball. The number of the arc plates 8 is consistent with the clamping member 7, and the corresponding clamping member 7 is driven and adjusted by the arc plates 8. The rolling contact between the arc plates 8 and the second ball causes the adjustment rod 75 in the clamping member 7 to move with the movement of the arc plates 8. The reset spring is provided for the self-reset movement of the clamping member 7.

[0065] The top side walls of the multiple slots on the connecting seat in the pressure chamber body 1 are all inclined to facilitate the sliding out of the ball 1. Therefore, the spring positioning pin 5110 can contact the top surface of its connecting seat during the rotation and adjustment of the pressure chamber body 1. A plug-in hole for plugging in the corresponding spring positioning pin 5110 is provided between two adjacent slots on the connecting seat. The plug-in limit between the spring positioning pin 5110 and the plug-in hole realizes the circumferential limit for the loading of the pressure chamber body 1 on the fixing seat 2, thereby ensuring the convenience and stability of the assembly between the pressure chamber body 1 and the fixing seat 2.

[0066] The working principle of the present invention is: when the product is assembled and used, the sample to be tested is placed and loaded first. There are two ways to place the sample to be tested. First, the sample to be tested is placed on the sample table 3 on the fixed seat 2, and then the sample to be tested on the sample table 3 is wrapped through the bottom opening of the rubber holster 4, and the bottom end of the rubber holster 4 wraps the boss in the fixed seat 2, so as to realize the placement and loading of the sample to be tested. Second, the sample to be tested is first inserted into the inside of the rubber holster 4 from the bottom opening of the rubber holster 4, and then the rubber holster 4 with the sample to be tested is wrapped on the boss in the fixed seat 2, so as to realize the placement and loading of the sample to be tested.

[0067] After the sample to be tested is loaded on the fixing seat 2 through the rubber holster 4, the pressure chamber body 1 is then mounted on the fixing seat 2 in such a way that the connecting seat contacts the fixing seat 2. When the connecting seat in the pressure chamber body 1 is assembled with the fixing seat 2, the connecting seat first contacts the locking assembly 5 provided on the fixing seat 2. When the connecting seat contacts the locking assembly 5, each slot on the connecting seat needs to correspond to the corresponding locking piece 51 in the locking assembly 5, so as to ensure that the connecting seat can stably contact the pressure ring 52 in the locking assembly 5.

[0068] After the connecting seat contacts the pressure ring 52, it presses downward, causing the pressure ring 52 to sink and move into the annular groove provided on the fixing seat 2. While the pressure ring 52 sinks, it squeezes each air-spreading bag 63 in the sealing member 6, so that the gas inside it enters the annular airbag 61 through the corresponding air guide bag 62, so that the annular airbag 61 can expand, and then fully contact the inner wall of the connecting seat after it moves down to its position, thereby ensuring the sealing of the pressure chamber body 1 after being assembled with the fixing seat 2.

[0069] When the seal 6 is deformed due to long-term use, the internal air pressure of the seal 6 is observed through the air pressure gauge in the airbag pressure regulator 9. When the internal air pressure is found to be insufficient, the kneading airbag in the airbag pressure regulator 9 can be squeezed to replenish the air inside the seal 6 to ensure its sealing effect. If the air pressure value in the seal 6 is too high, the pressure relief valve at the air outlet of the kneading airbag can be adjusted to achieve the pressure relief operation, thereby ensuring the safety and service life of the seal 6.

[0070] When the pressure chamber body 1 is loaded downward, the top of the connection seat is located below the pad 519 on the locking member 51 in the locking assembly 5. Then it is rotated 45 degrees counterclockwise so that the connection seat in the pressure chamber body 1 is rotated and adjusted on the pressure ring 52 in the locking assembly 5.

[0071] During the process of downward pressure loading of the pressure chamber body 1, the pressing ring 52 is adjusted downward accordingly. During the downward movement, the pressing ring 52 presses the pressing rod 516 in the locking member 51, causing it to move downward synchronously. During the downward movement and adjustment of the pressing rod 516, the extrusion spring 1 sleeved thereon is compressed, and the active wedge block 515 is driven to move downward synchronously. When the active wedge block 515 moves downward, it squeezes the driven wedge block 514, causing it to move outward. While the driven wedge block 514 is subjected to force movement, it drives the L-shaped rod 513 to move synchronously. During the displacement movement, the L-shaped rod 513 drives the connecting rod 517 inside it to move, thereby driving the wedge plate 518 to adjust synchronously. During the displacement adjustment, the wedge plate 518 causes the rod body in the spring positioning pin 5110 to move with it and move downward and extend under the action of its own extrusion spring 2, and the bottom end of the rod body exceeds the cushion block 519.

[0072] When the pressure chamber body 1 is rotated and adjusted, the connection seat realizes the misalignment of the slots thereon during the rotation adjustment process, so that the top of other parts in the connection seat moves to the locking member 51 in the locking assembly 5, and the pad 519 in the locking member 51 contacts the top of the connection seat, thereby realizing the longitudinal limit thereof. During the rotation of the connection seat, the ball on the bottom end of the rod body extending from the spring positioning pin 5110 rolls on the inclined surface of the slot, so that the spring positioning pin 5110 moves to the top of the connection seat as the connection seat rotates. Then, when the pressure chamber body 1 rotates 45 degrees, the bottom end of the spring positioning pin 5110 is inserted into the socket provided on the connection seat, thereby realizing the circumferential limit between the pressure chamber body 1 and the fixed seat 2.

[0073] During the rotation of the pressure chamber body 1, each arc plate 8 arranged on the connecting seat squeezes the adjustment rod 72 in the corresponding clamping member 7, causing it to move, stretching the reset spring, and driving the corresponding arc clamping strip 71 to move. Then, the multiple arc clamping strips 71 are brought together to form a circular structure, so as to clamp and seal the bottom end of the rubber holster 4 mounted on the boss, thereby realizing the convenient assembly operation of the product.

[0074] When the product needs to be disassembled, the support ring 531 of the release member 53 in the locking assembly 5 is adjusted upward, and the support ring 531 is stably moved upward under the guidance of each slide plate 532. During the upward movement of the support ring 531, each connecting rod 517 is synchronously lifted, and the wedge plate 518 is driven to move upward during the movement of the connecting rod 517. Then, the corresponding adjustment frames 5111 are pushed up, and the corresponding spring positioning pins 5110 are pulled upward. The spring positioning pins 5110 are disengaged from the plugged sockets, and then the pressure chamber body 1 is rotated in the opposite direction, so that the connecting seat thereon reaches the loading position when pressed down. During the rotation and adjustment of the pressure chamber body 1, the adjustment rods 72 in the corresponding clamping members 7 that are in contact with the arc plate 8 are reset under the action of their respective reset springs. Then, the clamping and sealing effect of the bottom end of the rubber holster 4 is cancelled.

[0075] After the pressure chamber body 1 is adjusted in the reverse direction, under the elastic action of the extrusion spring 1 in the locking member 51 of the locking assembly 5, the pressure chamber body 1 moves upward along with the pressure ring 52 to return to its original position.

[0076] The pressure ring 52 cancels the pressure on the air spreading bag 63 in the sealing member 6 during the upward movement, and the gas in the annular airbag 61 enters the corresponding air spreading bag 63 through each air guide bag 62, canceling its sealing effect. This facilitates the convenient disassembly between the pressure chamber body 1 and the fixing seat 2, and the simple disassembly of the rubber leather cover 4.

[0077] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A triaxial pressure chamber that can be quickly assembled, comprising a pressure chamber body (1) and a fixing seat (2), wherein: The fixing seat (2) is located directly below the pressure chamber body (1), and is characterized in that: a boss is integrally arranged at the center of the top circle of the fixing seat (2), and a sample table (3) for carrying materials is installed on the top of the boss, wherein a rubber cover (4) for wrapping materials is sleeved on the outer circumferential wall of the boss, and a clamping member (7) for clamping the bottom end of the rubber cover (4), a sealing member (6) for ensuring the sealing of the pressure chamber body (1) and the fixing seat (2), and a locking assembly (5) for locking the connecting seat in the pressure chamber body (1) are arranged in sequence around the boss from the inside to the outside, and an airbag pressure regulator (9) for adjusting the internal air pressure of the sealing member (6) is arranged on the side of the fixing seat (2), and an arc plate (8) for matching the clamping member (7) is installed on the connecting seat; The fixing seat (2) is composed of a base and a disc, wherein the disc is integrally arranged on the top of the base, the boss is located at the top center of the disc, an annular groove is provided at the top edge of the base, and an annular embedded groove is provided on the peripheral wall of the disc; The sealing member (6) comprises an annular airbag (61) sleeved in an annular embedded groove, a plurality of air guide bags (62) accommodated in corresponding through grooves are integrally formed at the bottom of the annular airbag (61), the other end of the air guide bag (62) extends into the annular groove and is integrally formed with an air spreading bag (63), wherein an air delivery channel is installed at the bottom of any air guide bag (62), the other end of the air delivery channel penetrates the peripheral wall of the base and is installed with an air nozzle, and the airbag pressure regulator (9) is connected to the air nozzle; The locking assembly (5) is composed of a locking member (51), a pressure ring (52) and a release member (53), wherein the locking member (51) includes a plurality of locking members, which are respectively arranged on the peripheral wall of the fixing seat (2) along the circumferential direction, and the locking member (51) includes a shell (511) fixedly connected to a groove on the fixing seat (2), a U-shaped frame (512) is welded on the outer shell wall of the shell (511), an L-shaped rod (513) is movably connected to the U-shaped frame (512), the bottom end of the L-shaped rod (513) passes through the outer shell wall of the shell (511) and is installed with a driven wedge (514), the inclined surface of the driven wedge (514) is slidably connected to the active wedge (515), the top of the active wedge (515) is installed with a pressing rod (516), and the top end of the pressing rod (516) passes through the top shell wall of the shell (511); The vertical portion of the L-shaped rod (513) is provided with a through hole, in which a connecting rod (517) is movably connected, and a wedge-shaped plate (518) is installed at the top of the connecting rod (517); a hole is provided on the top shell wall of the U-shaped frame (512), in which a spring positioning pin (5110) for plugging into a connecting seat in the limit pressure chamber body (1) is movably connected, and an adjustment frame (5111) is installed on the top of the spring positioning pin (5110), and the adjustment frame (5111) is in movably contact with the inclined surface of the wedge-shaped plate (518); a pad (519) located on the inner wall of the top of the U-shaped frame (512) is installed between the L-shaped rod (513) and the spring positioning pin (5110) by bolts, and is used to press the connecting seat in the pressure chamber body (1); The release member (53) comprises a support ring (531) located below the U-shaped frame (512); a plurality of slide plates (532) are fixedly connected to the top of the support ring (531); and the tops of the plurality of slide plates (532) are respectively slidably connected to corresponding U-shaped frames (512).

2. A triaxial pressure chamber capable of rapid assembly according to claim 1, characterized in that: A plurality of through grooves are provided on the top shell wall of the base along the circumferential direction, and the through grooves are used to penetrate the annular embedded groove and the annular groove.

3. A triaxial pressure chamber capable of rapid assembly according to claim 1, characterized in that: The airbag pressure regulator (9) is composed of a kneading airbag, a hose and a pressure gauge, wherein the kneading airbag and the pressure gauge are connected via a hose, the other end of the pressure gauge is threadedly connected to the air nozzle, and a pressure relief valve for gas pressure relief is provided at the air outlet end of the kneading airbag.

4. A triaxial pressure chamber capable of rapid assembly according to claim 1, characterized in that: The bottom of the pressing ring (52) is fixedly connected to the top ends of the plurality of pressing rods (516), and a plurality of compression springs located on the corresponding pressing rods (516) are sleeved between the pressing ring (52) and the housing (511).

5. The triaxial pressure chamber capable of rapid assembly according to claim 1, characterized in that: A plurality of guide grooves are provided on the top shell wall of the support ring (531) along the circumferential direction, and sliding blocks are slidably connected in the guide grooves.

6. A triaxial pressure chamber capable of rapid assembly according to claim 1, characterized in that: Rectangular notches are provided on the top and bottom shell walls of the U-shaped frame (512), the top end of the L-shaped rod (513) passes through the upper rectangular notch, the bottom end of the connecting rod (517) passes through the lower rectangular notch and is fixedly connected to the corresponding slider.

7. A rapidly assembled triaxial pressure chamber according to claim 1, characterized in that: The spring positioning pin (5110) comprises a rod body movably connected to the hole, the bottom end of the rod body is rollingly connected to a first ball, the top end of the rod body is fixedly connected to a top plate, and a second extrusion spring located on the rod body is sleeved between the top plate and the top shell wall of the U-shaped frame (512); The adjustment frame (5111) comprises side frames symmetrically arranged on the top outer wall of the top plate, and rollers are rotatably connected between the symmetrical side frames, and the rollers are in rolling contact with the inclined surface of the wedge plate (518).

8. The triaxial pressure chamber capable of rapid assembly according to claim 1, characterized in that: The clamping member (7) comprises a plurality of clamping members, which are arranged on the top outer wall of the disk along the circumferential direction, wherein the clamping member (7) comprises a straight plate fixedly connected to the top outer wall of the disk, an adjusting rod (72) is movably connected to the straight plate, an arc-shaped clamping strip (71) for clamping the rubber holster (4) is installed at one end of the adjusting rod (72) close to the boss, and a second ball is rollingly connected to one end of the adjusting rod (72) away from the boss, and a return spring located on the adjusting rod (72) is sleeved between the arc-shaped clamping strip (71) and the straight plate; The arc-shaped plates (8) include a plurality of arc-shaped plates (8) which are arranged at the top end of the inner ring of the connecting seat in the pressure chamber body (1) along the circumferential direction, and the arc-shaped plates (8) are in rolling contact with the second ball.

9. A triaxial pressure chamber capable of rapid assembly according to claim 7, characterized in that: The top side walls of the multiple slots on the connecting seat in the pressure chamber body (1) are all inclined to facilitate the sliding out of the ball 1, and a socket for inserting the corresponding spring positioning pin (5110) is provided between two adjacent slots on the connecting seat.

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