CN215865709U - Spring torsion testing machine - Google Patents

Abstract

The application provides a spring torsion testing machine belongs to testing machine technical field. The spring torsion testing machine comprises a testing machine body and a clamping assembly. The core barrel is sleeved on the connecting shaft in a sliding mode, the four groups of fixing pieces are arranged along the arc surface annular array of the mounting barrel, and the two groups of connecting shafts of the clamping assemblies are connected with the input shaft of the axial force sensor and the output shaft of the driving motor in a key mode respectively. This spring torsion testing machine is through setting up core section of thick bamboo key joint in the connecting key, first stopper on the core section of thick bamboo carries on spacingly to the sample spring, set up the centre gripping installation of mounting to the sample spring around an installation section of thick bamboo, driving motor provides torsional force for the sample spring, the test demand of different specification sample springs can be satisfied to the testing machine, make the suitability reinforcing of testing machine, the installation to the sample spring can be accomplished fast to the centre gripping subassembly simultaneously, the sample spring atress is even during the centre gripping, and stability is strong, the accuracy of test result has been guaranteed.

Description

Spring torsion testing machine

Technical Field

The application relates to the technical field of testing machines, in particular to a spring torsion testing machine.

Background

The spring torsion testing machine is a special instrument for testing springs, the springs are mainly used on machines and vehicles after being produced and can be put into use through strict tests before being used, if the springs mounted on the machines or the vehicles are not subjected to the strict tests, the performance of the springs is not required, the performance is serious, and the consequences are serious, the springs used for shock absorption on the vehicles lose balance of the vehicles due to performance degradation, traffic accidents are easy to cause, so the performance test of the springs is necessary, the clamping mode of the spring torsion testing machine on the market at present usually adopts a chuck, however, the clamping area of the chuck is small, the clamping force is small, the sample springs can slide in the testing process, the sample springs can rotate or axially slide, if too large clamping force is adopted, the sample springs can be damaged, and the sample springs can be damaged before the test is started, the accuracy of the test is reduced, and meanwhile, the structural limitation of the testing machine is difficult to meet the test requirements of sample springs with different specifications, so how to invent a spring torsion testing machine to improve the problems becomes a problem to be solved by the technical staff in the field.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the application provides a spring torsion testing machine, aims at improving the clamping mode and has skidding or harm the sample, and the testing machine structure is limited, the not strong problem of suitability.

The embodiment of the application provides a spring torsion testing machine, including testing machine body and centre gripping subassembly.

The testing machine body comprises an operating platform, a control center, an axial force sensor, a fixed seat and a driving motor, wherein the control center is fixedly installed on one side of the top of the operating platform, an output shaft of the axial force sensor is electrically connected with the control center through a single chip microcomputer, the fixed seat is arranged on one side of the top of the operating platform far away from the control center, and the driving motor is fixedly installed on the fixed seat.

The clamping assembly comprises a mounting mechanism and a fixing mechanism, the mounting mechanism comprises a connecting shaft, a connecting key, a core barrel and a first limiting block, the connecting key is fixedly mounted at one end of the connecting shaft, the core barrel is slidably sleeved on the connecting shaft, the first limiting block is trapezoidal thread and is integrally arranged with the surface of the core barrel, the fixing mechanism comprises a mounting barrel and a fixing piece, the mounting barrel is sleeved on the mounting mechanism and is fixedly connected with the connecting shaft, the fixing piece comprises a mounting plate, a screw rod, a pressing plate and a second limiting block, the mounting plate is fixedly mounted on the mounting barrel, the screw rod thread penetrates through the mounting plate and the mounting barrel, the pressing plate is rotatably mounted at one end of the screw rod, the second limiting block is fixedly mounted at the bottom of the pressing plate and is arranged corresponding to the first limiting block, and the fixing piece is provided with four groups, four sets of the mounting is followed installation section of thick bamboo cambered surface annular array, the centre gripping subassembly is provided with two sets ofly, two sets of the connecting axle of centre gripping subassembly respectively with the input shaft of axial force sensor reaches driving motor's output shaft key-type connection.

In the implementation process, the core barrel matched with the specification of the sample spring is arranged, the core barrel key is connected with the connecting key, the first limiting block on the core barrel limits the sample spring, the periphery of the mounting cylinder is provided with a fixing part, the second limiting block is abutted against the first limiting block through a screw rod adjusting pressure plate to complete the clamping and mounting of the sample spring, two groups of clamping components are respectively used for fixing two ends of the sample spring, the torsion force is provided for the sample spring by the driving motor, the data of the sample spring is recorded by the axial force sensor in real time and is transmitted to the control center, the replaceable core barrel enables the testing machine to meet the testing requirements of sample springs with different specifications, enhances the applicability of the testing machine, meanwhile, the clamping assembly can rapidly complete the installation of the sample spring, the sample spring is uniformly stressed during clamping, the stability is high, and the accuracy of a test result is ensured.

In a specific implementation scheme, rubber pads are fixedly mounted on the surfaces of the first limiting block and the second limiting block.

In the above-mentioned realization process, the surface of first stopper and second stopper is provided with the rubber pad, and first stopper and second stopper damage sample spring when avoiding the test has reduced the accuracy of test.

In a specific embodiment, a sliding groove is formed in the top of the operating platform, and the fixing seat is slidably mounted in the sliding groove.

In the implementation process, the sliding groove is formed in the top of the operating platform, the driving motor can be changed by the aid of the sliding fixing seat, accordingly, the distance between the two groups of clamping assemblies is changed, the testing machine can meet the requirements of sample springs with different length specifications, and applicability of the testing machine is enhanced.

In a specific embodiment, the fixing seat is provided with an installation block and a bolt, the installation block is fixedly installed on one side of the fixing seat, the bolt is inserted into the installation block in a sliding mode, the bottom of the sliding groove is provided with a pin hole, and the bottom end of the bolt is inserted into the pin hole in a sliding mode.

In the above-mentioned realization process, the accessible inserts the pinhole with the bolt to spacing to the fixing base, restoring force pulling fixing base that probably produces when avoiding the sample spring to twist reverse in the experimentation removes, thereby leads to the experimental data inaccurate.

In a specific embodiment, the fixing member further comprises a handle, and the handle is fixedly installed at one end of the screw rod far away from the pressure plate.

In the implementation process, the handle is arranged at the top of the screw rod, the screw rod can be driven to rotate by rotating the handle, and the fixing piece can be adjusted conveniently and quickly and labor-saving when the sample spring is clamped and fixed.

In a specific embodiment, the platen is provided as an arcuate plate.

In the implementation process, the pressing plate is arranged as the arc-shaped plate, the arc-shaped plate is matched with the arc surface of the spring more, so that the second limiting block is attached to the first limiting block more closely, and the clamping effect on the sample spring is better.

In a specific embodiment, the clamping assembly further comprises a separation mechanism, the separation mechanism comprises a sliding block, an installation rod, a first spring, a telescopic piece and a pin rod, a mounting groove and a limiting hole are formed in one end, connected with the connecting shaft, of the connecting shaft, the limiting hole is formed in the mounting groove and communicated with the mounting groove, the sliding block is slidably mounted in the mounting groove, the installation rod is fixedly mounted in the mounting groove, the sliding block is slidably sleeved on the installation rod, the first spring is sleeved on the installation rod, the telescopic piece is arranged in the limiting hole and fixedly connected with the sliding block, a slot is formed in the installation barrel, the slot is communicated with the limiting hole, and the pin rod is slidably inserted in the slot.

In the above-mentioned realization process, the core section of thick bamboo cup joints on the connecting key, spacing ring and spacing groove spacing cooperation, when changing the core section of thick bamboo, need extract the core section of thick bamboo from the connecting key, the pin pole is pressed to the accessible this moment, break away from spacing hole after the extensible member extrusion shrink, the slider has not had the limiting displacement of extensible member, first spring is in compression state this moment, first spring replies and promotes the slider outwards to remove in the mounting groove, thereby promote the core section of thick bamboo, make the spacing ring break away from the spacing inslot, alright light take out the core section of thick bamboo from the connecting key.

In a specific embodiment, the detachment mechanism further includes a first limiting plate and a second limiting plate, the second limiting plate is disposed in the limiting hole and is fixedly connected to one end of the pin rod, and the first limiting plate is fixedly mounted at one end of the pin rod away from the second limiting plate.

In the implementation process, the first limiting plate is arranged outside the installation barrel, the pin rod can be prevented from falling from the slot after the extensible member is separated from the limiting hole, the second limiting plate is arranged in the limiting hole, and the pin rod can be prevented from being separated from the slot when the separation mechanism is turned.

In a specific embodiment, one end of the connecting key is provided with a limiting ring, the inner wall of the core barrel is provided with a limiting groove, and the limiting groove is in limiting fit with the limiting ring.

In the implementation process, one end of the connecting key, which is close to the connecting shaft, is provided with the limiting ring, the core barrel is internally provided with the limiting groove, and when the core barrel is installed, whether the core barrel is installed in place can be judged through the matching of the limiting groove and the limiting ring.

In a specific implementation scheme, the telescopic piece comprises a loop bar, a sliding rod, a third limiting plate and a second spring, the sliding rod is inserted into the loop bar in a sliding mode, the third limiting plate is fixedly installed at the bottom of the sliding rod, and the second spring is arranged at the bottom of the third limiting plate.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a spring torsion testing machine provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a testing machine body provided in the embodiment of the present application;

FIG. 3 is a schematic structural diagram of a clamping assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a mounting mechanism provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a fixing mechanism provided in an embodiment of the present application;

FIG. 6 is a schematic view of a fastener structure provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a detachment mechanism provided in an embodiment of the present application;

FIG. 8 is a schematic structural view of a telescoping member provided in an embodiment of the present application;

fig. 9 is a front view of a spring torsion testing machine according to an embodiment of the present application.

In the figure: 100-a tester body; 110-an operation table; 111-a chute; 112-pin holes; 120-a control center; 130-axial force sensor; 140-a fixed seat; 141-a mounting block; 142-a latch; 150-a drive motor; 200-a clamping assembly; 210-a mounting mechanism; 211-a connecting shaft; 2111-mounting groove; 2112-limiting hole; 212-a connecting bond; 2121-a limit ring; 213-core barrel; 2131-limiting groove; 214-a first stopper; 220-a securing mechanism; 221-mounting a barrel; 2211-slot; 222-a fastener; 2221-mounting plate; 2222-screw; 2223-pressing plate; 2224-a second stopper; 2225-handle; 230-a disengagement mechanism; 231-a slider; 232-mounting a rod; 233-a first spring; 234-a telescoping member; 2341-loop bar; 2342-sliding bar; 2343-third limiting plate; 2344 — second spring; 235-pin rod; 236-a first limit plate; 237-second limiting plate.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, the present application provides a spring torsion testing machine, which includes a testing machine body 100 and a clamping assembly 200.

Referring to fig. 2, the testing machine body 100 includes an operation console 110, a control center 120, an axial force sensor 130, a fixing base 140 and a driving motor 150, the control center 120 is fixedly installed at one side of the top of the operation console 110, an output shaft of the axial force sensor 130 is electrically connected to the control center 120 through a single chip, the fixing base 140 is installed at one side of the top of the operation console 110 far away from the control center 120, and the driving motor 150 is fixedly installed at the fixing base 140.

In other embodiments, the sliding groove 111 is formed in the top of the operating platform 110, the fixing seat 140 is slidably mounted on the sliding groove 111, and the position of the driving motor 150 can be changed by sliding the fixing seat 140, so that the distance between the two sets of clamping assemblies 200 can be changed, the testing machine can meet the requirements of test sample springs with different length specifications, and the applicability of the testing machine is enhanced.

In other embodiments, the fixing base 140 is provided with a mounting block 141 and a plug 142, the mounting block 141 is fixedly mounted on one side of the fixing base 140, the plug 142 is inserted into the mounting block 141 in a sliding manner, the bottom of the sliding groove 111 is provided with a pin hole 112, the bottom end of the plug 142 is inserted into the pin hole 112 in a sliding manner, the plug 142 can be inserted into the pin hole 112 in a sliding manner, so that the fixing base 140 is limited, and the phenomenon that the fixing base 140 is pulled to move by a restoring force possibly generated when a sample spring is twisted in an experimental process is avoided, so that experimental data is inaccurate.

Referring to fig. 3, 4, 5, 6 and 9, the clamping assembly 200 includes a mounting mechanism 210 and a fixing mechanism 220, the mounting mechanism 210 includes a connecting shaft 211, a connecting key 212, a core barrel 213 and a first stopper 214, the connecting key 212 is fixedly mounted at one end of the connecting shaft 211, the core barrel 213 is slidably sleeved on the connecting shaft 211, the first stopper 214 is a trapezoidal thread and is integrally disposed with the surface of the core barrel 213, the fixing mechanism 220 includes a mounting barrel 221 and a fixing member 222, the mounting barrel 221 is sleeved on the mounting mechanism 210 and is fixedly connected with the connecting shaft 211, the fixing member 222 includes a mounting plate 2221, a screw 2222, a pressing plate 2223 and a second stopper 2224, the mounting plate 2221 is fixedly mounted on the mounting barrel 221, the screw 2222 is threaded through the mounting plate 2221 and the mounting barrel 221, the pressing plate 2223 is rotatably mounted at one end of the screw 2222, the second stopper 2224 is fixedly mounted at the bottom of the pressing plate 2223 and is disposed corresponding to the first stopper 214, the fixing pieces 222 are provided with four groups, the four groups of fixing pieces 222 are annularly arrayed along the arc surface of the mounting cylinder 221, the clamping assemblies 200 are provided with two groups, and the connecting shafts 211 of the two groups of clamping assemblies 200 are respectively in key connection with the input shaft of the axial force sensor 130 and the output shaft of the driving motor 150.

In other embodiments, rubber pads are fixedly mounted on the surfaces of the first limiting block 214 and the second limiting block 2224, so that the sample spring is prevented from being damaged by the first limiting block 214 and the second limiting block 2224 during testing, and the testing accuracy is reduced.

In other embodiments, the fixing element 222 further includes a handle 2225, the handle 2225 is fixedly mounted at an end of the screw 2222 away from the pressing plate 2223, and the screw 2222 can be driven to rotate by rotating the handle 2225, so that the fixing element 222 can be adjusted more conveniently and more easily when the sample spring is clamped and fixed.

In other embodiments, the pressing plate 2223 is configured as an arc-shaped plate, and the arc-shaped plate is more matched with the arc surface of the spring, so that the second limit block 2224 is more tightly attached to the first limit block 214, and the clamping effect on the sample spring is better.

Referring to fig. 7, the clamping assembly 200 further includes a releasing mechanism 230, the releasing mechanism 230 includes a sliding block 231, a mounting rod 232, a first spring 233, an expansion member 234 and a pin rod 235, one end of the connecting shaft 211 connected to the connecting key 212 is provided with a mounting groove 2111 and a limiting hole 2112, the limiting hole 2112 is disposed in the mounting groove 2111 and communicated with the mounting groove 2111, the sliding block 231 is slidably mounted in the mounting groove 2111, the mounting rod 232 is fixedly mounted in the mounting groove 2111, the sliding block 231 is slidably sleeved on the mounting rod 232, the first spring 233 is sleeved on the mounting rod 232, the expansion member 234 is disposed in the limiting hole 2112 and fixedly connected to the sliding block 231, the mounting cylinder 221 is provided with a slot 2211, the slot 2211 is communicated with the limiting hole 2112, the pin rod 235 is inserted into the slot 2211, when the core cylinder 213 is replaced, the core cylinder 213 needs to be pulled out of the connecting key 212, at this time, the expansion member 234 can be extruded and contracted by pressing the pin rod 235 to be released from the limiting hole 2112, the sliding block 231 has no limiting function of the telescopic member 234, and at this time, the first spring 233 is in a compressed state, and the first spring 233 returns to push the sliding block 231 to move outwards in the mounting groove 2111, so as to push the core barrel 213, so that the limiting ring 2121 is disengaged from the limiting groove 2131, and the core barrel 213 can be easily taken out of the connecting key 212.

In some other embodiments, the detachment mechanism 230 further includes a first limiting plate 236 and a second limiting plate 237, the second limiting plate 237 is disposed in the limiting hole 2112 and is fixedly connected to one end of the pin rod 235, the first limiting plate 236 is fixedly mounted at an end of the pin rod 235 far from the second limiting plate 237, the first limiting plate 236 can prevent the pin rod 235 from falling out of the slot 2211 after the expansion piece 234 is detached from the limiting hole 2112, and the second limiting plate 237 is disposed in the limiting hole 2112, so as to prevent the pin rod 235 from being detached from the slot 2211 when the detachment mechanism 230 is turned over.

In other embodiments, a limiting ring 2121 is disposed at one end of the connecting key 212, a limiting groove 2131 is disposed on the inner wall of the core barrel 213, the limiting groove 2131 is in limiting fit with the limiting ring 2121, and when the core barrel 213 is mounted, whether the core barrel 213 is mounted in place can be determined by matching the limiting groove 2131 with the limiting ring 2121.

Referring to fig. 8, the retractable member 234 includes a sleeve 2341, a sliding rod 2342, a third limiting plate 2343 and a second spring 2344, the sliding rod 2342 is slidably inserted into the sleeve 2341, the third limiting plate 2343 is fixedly installed at the bottom of the sliding rod 2342, and the second spring 2344 is disposed at the bottom of the third limiting plate 2343.

The working principle of the spring torsion testing machine is as follows: selecting a core barrel 213 matched with the inner diameter specification of the sample spring, sleeving the core barrel 213 on a connecting key 212, screwing one end of the sample spring along the trapezoidal thread of a first limiting block 214 and sleeving the core barrel 213, rotating a handle 2225 to drive a screw 2222 to rotate, screwing the screw 2222 downwards to drive a pressing plate 2223 to move downwards until a second limiting block 2224 abuts against the first limiting block 214, clamping one end of the sample spring in a clamping component 200 by the first limiting block 214 and the second limiting block 2224, pushing a fixed seat 140 to slide in a sliding groove 111, driving a driving motor 150 and another group of clamping components 200 to move to corresponding positions, clamping the other end of the sample spring in another group of clamping components 200, starting the driving motor 150, rotating an output shaft of the driving motor 150 to drive a connecting shaft 211 to rotate, twisting the sample spring, recording and transmitting data to a control center 120 by a shaft force sensor 130, can accomplish the torsion experiment to the sample spring, when needing to change core barrel 213 and sample spring matching, press the pin 235 at installation section of thick bamboo 221 top, pin 235 extrudees extensible member 234 downwards, the extensible member 234 contracts the end, slide bar 2342 breaks away from spacing hole 2112, slider 231 has not had the limiting displacement of extensible member 234 this moment, first spring 233 is in compression state, first spring 233 returns and promotes slider 231 and slides in mounting groove 2111, thereby promote core barrel 213, break away from spacing ring 2121 with spacing groove 2131, alright take out core barrel 213 from connecting key 212.

It should be noted that the specific model specifications of the control center 120, the axial force sensor 130, and the driving motor 150 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art, so detailed description is omitted.

The power supply of the control center 120, the shaft force sensor 130, the driving motor 150 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A spring torsion testing machine is characterized by comprising

The testing machine comprises a testing machine body (100), wherein the testing machine body (100) comprises an operating platform (110), a control center (120), an axial force sensor (130), a fixed seat (140) and a driving motor (150), the control center (120) is fixedly installed on one side of the top of the operating platform (110), an output shaft of the axial force sensor (130) is electrically connected with the control center (120) through a single chip microcomputer, the fixed seat (140) is arranged on one side, far away from the control center (120), of the top of the operating platform (110), and the driving motor (150) is fixedly installed on the fixed seat (140);

the clamping assembly (200), the clamping assembly (200) includes an installation mechanism (210) and a fixing mechanism (220), the installation mechanism (210) includes a connecting shaft (211), a connecting key (212), a core barrel (213) and a first limiting block (214), the connecting key (212) is fixedly installed at one end of the connecting shaft (211), the core barrel (213) is slidably sleeved on the connecting shaft (211), the first limiting block (214) is trapezoidal thread and is integrally arranged with the surface of the core barrel (213), the fixing mechanism (220) includes an installation barrel (221) and a fixing piece (222), the installation barrel (221) is sleeved on the installation mechanism (210) and is fixedly connected with the connecting shaft (211), the fixing piece (222) includes an installation plate (2221), a screw rod (2222), a pressing plate (2223) and a second limiting block (2224), the installation plate (2221) is fixedly installed on the installation barrel (221), screw rod (2222) screw thread run through in mounting panel (2221) and installation section of thick bamboo (221), clamp plate (2223) rotate install in screw rod (2222) one end, second stopper (2224) fixed mounting in clamp plate (2223) bottom and with first stopper (214) correspond the setting, mounting (222) are provided with four groups, four groups mounting (222) are followed installation section of thick bamboo (221) cambered surface annular array, centre gripping subassembly (200) are provided with two sets ofly, two sets of connecting axle (211) of centre gripping subassembly (200) respectively with the input shaft of axial force sensor (130) and the output shaft key-type connection of driving motor (150).

2. The spring torsion testing machine according to claim 1, wherein rubber pads are fixedly mounted on the surfaces of the first limiting block (214) and the second limiting block (2224).

3. The spring torsion testing machine according to claim 1, wherein a sliding groove (111) is formed at the top of the operating platform (110), and the fixing seat (140) is slidably mounted on the sliding groove (111).

4. The spring torsion testing machine according to claim 3, wherein the fixing seat (140) is provided with a mounting block (141) and a plug pin (142), the mounting block (141) is fixedly mounted on one side of the fixing seat (140), the plug pin (142) is inserted into the mounting block (141) in a sliding manner, a pin hole (112) is formed in the bottom of the sliding groove (111), and the bottom end of the plug pin (142) is inserted into the pin hole (112) in a sliding manner.

5. The spring torsion testing machine of claim 1, wherein the fixing member (222) further comprises a handle (2225), and the handle (2225) is fixedly mounted at one end of the screw (2222) far away from the pressure plate (2223).

6. The spring torsion testing machine according to claim 1, characterized in that the pressure plate (2223) is provided as an arc-shaped plate.

7. The spring torsion testing machine according to claim 1, wherein the clamping assembly (200) further comprises a disengaging mechanism (230), the disengaging mechanism (230) comprises a sliding block (231), an installation rod (232), a first spring (233), an expansion piece (234) and a pin rod (235), one end of the connecting shaft (211) connected with the connecting key (212) is provided with an installation groove (2111) and a limiting hole (2112), the limiting hole (2112) is arranged in the installation groove (2111) and communicated with the installation groove (2111), the sliding block (231) is slidably installed in the installation groove (2111), the installation rod (232) is fixedly installed in the installation groove (2111), the sliding block (231) is slidably sleeved on the installation rod (232), the first spring (233) is sleeved on the installation rod (232), the expansion piece (234) is arranged in the limiting hole (2112) and fixedly connected with the sliding block (231), the mounting cylinder (221) is provided with a slot (2211), the slot (2211) is communicated with the limiting hole (2112), and the pin rod (235) is inserted into the slot (2211) in a sliding mode.

8. The spring torsion testing machine according to claim 7, wherein the disengagement mechanism (230) further comprises a first limiting plate (236) and a second limiting plate (237), the second limiting plate (237) is disposed in the limiting hole (2112) and is fixedly connected to one end of the pin rod (235), and the first limiting plate (236) is fixedly mounted on one end of the pin rod (235) far away from the second limiting plate (237).

9. The spring torsion testing machine according to claim 1, wherein a limit ring (2121) is arranged at one end of the connecting key (212), a limit groove (2131) is formed in the inner wall of the core barrel (213), and the limit groove (2131) is in limit fit with the limit ring (2121).

10. The spring torsion testing machine is characterized in that the telescopic member (234) comprises a sleeve rod (2341), a sliding rod (2342), a third limiting plate (2343) and a second spring (2344), the sliding rod (2342) is slidably inserted into the sleeve rod (2341), the third limiting plate (2343) is fixedly installed at the bottom of the sliding rod (2342), and the second spring (2344) is arranged at the bottom of the third limiting plate (2343).

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