Load frame for loading test system

Abstract

The invention relates to the technical field of mechanical engineering, and provides a load frame for a loading test system, which comprises a fixed seat, a protective cover, a load frame, a stabilizing part, a clamping part and a driving part, the load frame is arranged on the fixed seat, the protective cover is hinged on the fixed seat to form a sealed space, the load frame and the stabilizing part are arranged in the sealed space, the stabilizing part is arranged on the load frame, and the clamping part is arranged on the fixed seat. A testing part capable of adjusting the size of the clamping space is arranged on the stabilizing part, the clamping part is arranged at the end part of the fixed seat in a sliding manner, one end of the driving part is arranged on the load frame, and the other end of the driving part is hinged with the clamping part. The impact strength of the load frame can be enhanced through the protective cover, so that the load frame can bear large failure impact and has high safety. Various other parts can be quickly assembled, disassembled and replaced through the fixing seat. Through the stabilizing part and the testing part, adaptation to different sample lengths and load conditions is realized, a multi-layer protection system is formed through the synergistic effect between the protection cover and the stabilizing part, and the problem of inconvenience in use is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical engineering, and particularly relates to a load frame for a loading test system. BACKGROUND

[0002] Loading test systems are generally used in situations where various components such as pipes, columns, rods, etc. are subjected to loading such as pressure, bending, torsion, etc. and are generally in the form of a load frame. The load frame of the existing loading test system generally has the following problems: First, the traditional frame adopts an integrated design, and the functional modules are not detachable, making it difficult to adapt to the test requirements of different specifications of samples. Second, when the sample on the test system fails, splashes are easily produced, and the protective measures of the load frame are simple, which poses a safety hazard. Third, the frame is easily deformed under a large load, and lacks a dynamic anti-instability mechanism, resulting in test data deviation. In patent document CN205209871U, a device for preventing instability of a load frame of a complete set of composite loading equipment is disclosed, which includes a support frame, a positioning rod, a ball, and a gland, etc. A circular hole is provided on the support frame for sleeving a test piece, a plurality of threaded holes are provided along the circumference of the circular hole, and a threaded positioning rod is installed in the threaded hole. The positioning rod can rotate in the threaded hole, and an open-ended gland is provided at one end of the positioning rod in the circular hole. The ball is provided in the gland and can be in rotatable contact with the test piece through the open end of the gland. Although this structure can solve the instability problem to some extent, it cannot solve other problems of the load frame. Fourth, the replacement of key components of the existing loading test system is difficult, the maintenance cycle is long, and the test efficiency is affected. SUMMARY

[0003] In view of the above problems, the present application provides a load frame for a loading test system, which comprises a fixed seat, a protective cover, a load frame, a stabilizing part, a clamping part, and a driving part. The load frame is arranged on the fixed seat, the protective cover is hinged to the fixed seat to form a sealed space, the load frame and the stabilizing part are arranged in the sealed space, the stabilizing part is installed on the load frame, and a test part capable of adjusting the size of the clamping space is arranged on the stabilizing part. The clamping part is slidingly arranged on the end of the fixed seat, one end of the driving part is arranged on the load frame, and the other end is hinged to the clamping part.

[0004] Optionally, the load frame comprises two cross beams and two support columns, the two support columns are arranged at intervals, and the two ends of the two support columns are threadedly connected with the two cross beams arranged at intervals. Connection holes are arranged on the two cross beams, the driving part is hinged to the clamping part through the connection holes, the two support columns are installed on the two sides of the fixed seat, and the two sides of the stabilizing part are matched with the two support columns.

[0005] Optionally, the stabilizing part comprises a first shelf plate, a second shelf plate and two clamping plates, the first shelf plate and the second shelf plate are arranged in layers and are spaced apart, two ends of the first shelf plate and the second shelf plate are connected by a mounting plate, the test part is arranged between the first shelf plate and the second shelf plate, the test part is connected with the corresponding mounting plate, two clamping plates are arranged on the outer side wall of the corresponding mounting plate, and the two clamping plates are matched with the corresponding structure of the load frame.

[0006] Optionally, the test part comprises a test frame and a plurality of adjusting rods, a plurality of adjusting rods are arranged in the circumferential direction of the test frame, the plurality of adjusting rods are threadedly arranged on the test frame, and two sides of the test frame are connected with the stabilizing part.

[0007] Optionally, the protective cover comprises a cover shell and a plurality of hinge members, the plurality of hinge members are arranged on two sides of the cover shell and protrude from the two sides of the cover shell, so that the plurality of hinge members on any side of the cover shell are hinged with the fixing seat.

[0008] Optionally, the fixing seat comprises a base, a plurality of hinge arms and a plurality of clamping seats, the plurality of clamping seats are arranged on the top of the two sides of the base, the load frame is matched with the plurality of clamping seats, the plurality of hinge arms are arranged on the two outer side walls of the base, the hinge arms are hinged with the protective cover, two supporting beams are arranged on the inner side walls of the two sides of the base, and the clamping part is slidingly arranged on the two supporting beams.

[0009] Optionally, the clamping part comprises a sliding support, a sliding seat and a holding member, the sliding seat is arranged in the fixing seat, the sliding seat is arranged on the bottom of the sliding support, the holding member is arranged on the top of the sliding support, the holding member is on the same axis as the center of the test part, the driving part is hinged with the sliding support, and the end of the driving part is initially arranged in a position spaced apart from the holding member, and the driving part is driven to move towards the holding member until the target object held by the holding member is abutted.

[0010] Optionally, the holding member comprises a first hoop and a second hoop, the first hoop is arranged on the sliding support, and the second hoop is detachably arranged on the second hoop.

[0011] Optionally, the driving part comprises a loading oil cylinder, a connecting module and a connecting rod, the loading oil cylinder is located outside the sealing space, a piston rod on the loading oil cylinder passes through the load frame and is connected with the connecting module, one end of the connecting rod is connected with one side of the connecting module, and the other end is hinged with the clamping part.

[0012] Optionally, the connecting module comprises a first connecting block and a second connecting block, the first connecting block is connected with the piston rod, a fixing groove is arranged on the first connecting block, the fixing groove is located at the opposite side of the piston rod, an adapter hole is arranged on the first connecting block, the adapter hole is communicated with the fixing groove, a connecting hole is arranged on the second connecting block, the adapter hole and the connecting hole are on the same axis, the second connecting block is arranged in the fixing groove and passes through the adapter hole and the connecting hole through a rotating shaft, and one end of the connecting rod is connected with the rotating shaft.

[0013] The load frame for loading test system has the following advantages compared with the prior art: The impact resistance of the load frame is enhanced by the protective cover, so that the load frame can withstand greater failure impact and has higher safety, and plays a role of redundant safety protection. The quick mounting and dismounting and replacement of various other components can be realized by the fixing seat, and multiple loading mode test uses are supported. The stability of the test sample length and the load condition is realized by the stability part and the test part, the equipment damage caused by compression instability is prevented, the protective cover and the stability part cooperate to form a multi-layer protection system, and the problem of inconvenient use in the prior art is solved. The load frame can be applied to various specifications of test samples for test use, and has high flexibility.

[0014] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application can be achieved and obtained by the structure indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 The structure diagram of the load frame for loading test system in the present application; Figure 2 The exploded view of the load frame for loading test system in the present application; Figure 3 The structure diagram of the protective cover of the load frame for loading test system in the present application; Figure 4 The structure diagram of the fixing seat of the load frame for loading test system in the present application; Figure 5A structure schematic diagram of a load frame for loading a test system in the present application; Figure 6 A structure schematic diagram of a stabilizing part of a load frame for loading a test system in the present application; Figure 7 A structure schematic diagram of a clamping part and a driving part for loading a test system in the present application.

[0017] In the figure, 1, fixed seat; 10, base; 11, articulated arm; 12, clamping seat; 13, non-slip pad; 14, support beam; 2, protective cover; 20, cover shell; 21, articulated piece; 3, load frame; 30, connecting hole; 31, support column; 32, cross beam; 33, locking nut; 4, stabilizing part; 41, first frame plate; 42, second frame plate; 43, mounting plate; 44, clamping plate; 5, clamping part; 51, sliding support; 52, sliding seat; 53, holding piece; 6, driving part; 61, loading oil cylinder; 62, connecting module; 621, first connecting block; 622, second connecting block; 63, connecting rod piece; 64, rotating shaft; 7, test part; 71, test frame; 72, adjusting rod; 531, first clamping hoop; 532, second clamping hoop. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0019] As shown in Figure 1 the embodiments of the present application provide a load frame for loading a test system, comprising: a fixed seat 1, a protective cover 2, a load frame 3, a stabilizing part 4, a clamping part 5 and a driving part 6. As shown in Figure 2As shown, the load frame 3 is mounted on the fixed base 1, and the protective cover 2 is hinged to the fixed base 1 to form a sealed space (the hinged protective cover 2 can be easily opened or closed at any time, making it more convenient to test each component). The load frame 3 and the stabilizing part 4 are located within the sealed space (the protective cover 2 can effectively protect the fixed base 1 and the load frame 3, stabilizing part 4 and clamping part 5 within the sealed space, so that the entire load frame can withstand a large failure impact and has high safety). The stabilizing part 4 is installed on the load frame 3 (which is equivalent to setting a reinforcing rib on the load frame 3, thereby increasing the structural strength of the load frame 3). The stabilizing part 4 is provided with a test part 7 that can adjust the size of the clamping space (the test part 7 is used to clamp samples of various specifications and has strong applicability). Through the synergistic effect of the stabilizing part 4 and the protective cover 2, a multi-layer protection system is formed, which solves the problem of inconvenience in previous use. The clamping part 5 is slidably mounted on the end of the fixed base 1. One end of the driving part 6 is mounted on the load frame 3, and the other end is hinged to the clamping part 5. The driving part 6 can drive the clamping part 5 to slide on the fixed base 1 (the clamping part 5 is mainly used to clamp the test object). Since the driving part 6 is slidably hinged to the sliding bracket 51 on the clamping part 5, the driving part 6 can move the sliding bracket 51 while simultaneously contacting the test object held by the holding member 53 on the sliding bracket 51. Furthermore, the sliding design facilitates quick loading and unloading of various components and supports testing under multiple loading modes. Optionally, there are two stabilizing parts 4, clamping parts 5, and driving parts 6, symmetrically arranged at both ends of the fixed base 1.

[0020] like Figure 5 As shown, in one embodiment, the load frame 3 includes two crossbeams 32 and two support columns 31. The two support columns 31 are spaced apart, and their ends are threadedly connected to the spaced crossbeams 32. Each crossbeam 32 has a connecting hole 30. The driving part 6 passes through the connecting hole 30 and is hinged to the clamping part 5. The two support columns 31 are respectively mounted on both sides of the fixed base 1, and both sides of the stabilizing part 4 cooperate with the two support columns 31. It should be noted that the structure between the two crossbeams 32 and the two support columns 31 forms a rectangular shape. Specifically, each crossbeam 32 has two through holes or threaded holes. When the holes are through holes, the two support columns 31 pass through the corresponding through holes, requiring a corresponding number of locking nuts 33 to securely connect the crossbeams 32 and the support columns 31. The load frame 3 uses locking nuts 33 to fix the distance between the two crossbeams 32, forming a rigid load-bearing body. The load frame 3 is rectangular in shape, possessing sufficient structural strength to form a load-bearing structure suitable for various tests.

[0021] like Figure 6As shown, in an embodiment, the stabilizing part 4 comprises a first shelf plate 41, a second shelf plate 42 and two clamping plates 44, the first shelf plate 41 and the second shelf plate 42 are arranged in a stacked and spaced manner, the two ends of the first shelf plate 41 and the second shelf plate 42 are connected by a mounting plate 43 respectively, a test part 7 is arranged between the first shelf plate 41 and the second shelf plate 42, the test part 7 is connected with the corresponding mounting plate 43, the two clamping plates 44 are arranged on the outer side wall of the corresponding mounting plate 43 respectively, and the two clamping plates 44 are matched with the corresponding structure of the load frame 3. It should be noted that the stabilizing part 4 is in the sealed space and is fixedly installed on the two support columns 31 of the load frame 3 through the two clamping plates 44, the two clamping plates 44 are two pairs of arc-shaped clamping plates 44 arranged in a mirror image in the height direction, the arc-shaped clamping plates 44 are provided with a sector-shaped gap, the sector-shaped gaps of the two arc-shaped clamping plates 44 of the same pair are arranged together on the outer wall of the mounting plate 43, so that the two sector-shaped gaps together form a semicircular opening, the aperture of the semicircular opening matches the outer diameter of the support column 31, and the two arc-shaped clamping plates 44 are clamped on the outer circumferential side surface of the support column 31, thereby further improving the stability and working stability of the stabilizing part 4. The two arc-shaped clamping plates 44 can be detachably connected through a bolt assembly or a connecting pin. In addition, the overall shape of the stabilizing part 4 is a rectangular structure, the arc-shaped clamping plates 44 are mounted on the two sides respectively, and the test part 7 is arranged in the central region of the rectangle. The second shelf plate 42 can be directly placed on the support beam 14 in the fixed seat 1, and the support beam 14 can be a sliding rail. The stabilizing part 4 mainly prevents the compression instability of the sample and avoids the damage of the equipment or the personnel casualty. During the test process, the stabilizing part 4 can also bear the weight of the sample. The stabilizing part 4 as a whole can be understood as being composed of two vertical frames, and the vertical frames are welded steel structures. The number of the stabilizing part 4 can be one, two or more than three, which can be selectively arranged according to actual needs. The first shelf plate 41, the second shelf plate 42, the two clamping plates 44 and the mounting plate 43 can be arranged in a detachable manner. The first shelf plate 41 and the second shelf plate 42 can be detachably connected through a bolt assembly, and the bolt assembly is a combination of a bolt and a nut on the market. In other embodiments, the first shelf plate 41 and the second shelf plate 42 can also be detachably connected through a latch, which can be selectively used according to actual needs.

[0022] In one embodiment, the testing unit 7 includes a testing frame 71 and a plurality of adjusting rods 72. The plurality of adjusting rods 72 are spaced apart along the circumferential direction of the testing frame 71, and are threaded onto the testing frame 71. The two sides of the testing frame 71 are connected to the stabilizing unit 4. Optionally, the testing frame 71 includes a first semicircular ring and a second semicircular ring, which together form a circular hole through which the object to be tested passes. Besides the circular ring structure, other structures can also be used, such as rectangular frames, pentagonal frames, hexagonal frames, etc., which can be designed according to actual needs to meet the requirements of different types or signals of products, improving adaptability and satisfying the needs of parts with different shapes. Furthermore, the plurality of adjusting rods 72 can be lead screws. To improve applicability, the hole walls of the first and second semicircular rings are provided with a plurality of lead screws arranged circumferentially and spaced apart for fixing the object to be tested. Bolts can also be used instead of lead screws. By adjusting the position of the lead screws, samples of various specifications can be clamped, providing strong applicability. When in use, the groove formed by the first and second semicircular rings engages with the support column 31 on the load frame 3. By adjusting the position of the lead screw, the purpose of preventing the sample from becoming unstable can be achieved.

[0023] like Figure 3 As shown, in one embodiment, the protective cover 2 includes a housing 20 and multiple hinge members 21. The multiple hinge members 21 are respectively disposed on both sides of the housing 20 and extend beyond both sides of the housing 20, so that the multiple hinge members 21 on either side of the housing 20 are hinged to the fixed base 1. It should be noted that the protective cover 2 covers the base 10 of the fixed base 1, so that the base 10, the load frame 3, and the protective cover 2 together form a sealed space. Specifically, hinge members 21 are spaced apart along the length of both sides of the protective cover 2, and each hinge member 21 has a hole to be coaxial with the shaft hole of the hinge arm 11 on the fixed base 1. In the assembled state, the hinge member 21 is inserted between the two hinge ears at the top of the hinge arm 11 on the fixed base 1, and a fastening assembly using a pin and a washer or retaining ring is used. The pin passes through the hole and the shaft hole in sequence, thus achieving the hinge connection of the protective cover 2 relative to the base 10. It should be noted that both sides of the protective cover 2 can be connected via the hinge structure mentioned above. When the hinge structure on either side is opened, the protective cover 2 can be flipped over. When both hinge structures on both sides are locked, the protective cover 2 can provide effective protection. Optionally, the protective cover 2 has an impact resistance of ≥450MPa and can withstand the impact of a 1000-ton sample failure, providing high safety. The protective cover 2 plays a safety protection role during the test, forming a basically closed whole with the load frame 3, base 10, etc., preventing high-energy debris from flying outwards when the sample fails, thus avoiding safety accidents and providing redundant safety protection.

[0024] like Figure 4As shown, in an embodiment, the fixed seat 1 comprises a base 10, a plurality of hinged arms 11 and a plurality of clamping seats 12, the plurality of clamping seats 12 are respectively arranged on the top of the two sides of the base 10, the load frame 3 is matched with the plurality of clamping seats 12, the plurality of hinged arms 11 are respectively arranged on the two outer walls of the base 10, the hinged arm 11 is hinged with the protective cover 2, two support beams 14 are respectively arranged on the two inner walls of the base 10, and the clamping part 5 is slidingly arranged on the two support beams 14. Optionally, the plurality of clamping seats 12 are arc-shaped seats, the inner side of the arc-shaped seat is an arc surface, the plurality of arc-shaped seats are matched with the outer surface of the support column 31 of the load frame 3, which can effectively increase the contact area between the base 10 and the load frame 3, improve the stability of the load frame, and ensure the test precision. The supporting surface of the arc-shaped seat is fixedly installed with the anti-skid pad 13, which can reduce the sliding of the load frame 3 relative to the base 10, and further improve the stability of the load frame. The sliding seat 52 in the clamping part 5 is slidingly arranged on the two support beams 14, and the support beam 14 can be a sliding rail.

[0025] As shown, Figure 7 In an embodiment, the clamping part 5 comprises a sliding bracket 51, a sliding seat 52 and a holding piece 53, the sliding seat 52 is arranged in the fixed seat 1, the sliding seat 52 is arranged at the bottom of the sliding bracket 51, the holding piece 53 is arranged at the top of the sliding bracket 51, the center of the holding piece 53 and the test part 7 are on the same axis, the driving part 6 is hinged with the sliding bracket 51, and the end of the driving part 6 is initially arranged at a position away from the holding piece 53, and the driving part 6 is driven to move towards the holding piece 53 until the target piece held by the holding piece 53 is in abutment. Optionally, the sliding seat 52 is generally arranged in pairs, and the pair of sliding seats 52 are fixed at the two ends of the bottom of the sliding bracket 51, and the pair of sliding seats 52 are slidingly arranged on the corresponding support beams 14. The number of sliding seats 52 can be selectively arranged according to actual needs, which can be one pair, two pairs, three pairs or more. The holding piece 53 is mainly used for clamping and fixing the two ends of the test sample, which realizes the clamping of the test sample, and cooperates with the test part 7 to fix more stably.

[0026] In an embodiment, the holding piece 53 comprises a first hoop 531 and a second hoop 532, the first hoop 531 is arranged on the sliding bracket 51, and the second hoop 532 is detachably arranged on the first hoop 531. It should be noted that the holding piece 53 is a semi-open structure, the first hoop 531 and the second hoop 532 are detachably connected through screws, and the first hoop 531 and the second hoop 532 are both annular structures.

[0027] In an embodiment, the driving part 6 comprises a loading oil cylinder 61, a connecting module 62 and a connecting rod 63, the loading oil cylinder 61 is located outside the sealed space, and a piston rod on the loading oil cylinder 61 is connected with the connecting module 62 through the load carrier 3, one end of the connecting rod 63 is connected with one side of the connecting module 62, and the other end is hinged with the clamping part 5. The connecting hole 30 provided on the cross beam 32 of the load carrier 3 is matched with the piston rod. The piston rod is driven to move by the loading oil cylinder 61, and the connecting module 62 is driven to move by the piston rod. Since the connecting rod 63 is hinged with the sliding support 51 in the clamping part 5, the sliding support 51 can not only be pushed to move, but also can be pushed to move close to the holding piece 53 until it is stopped.

[0028] In an embodiment, the connecting module 62 comprises a first connecting block 621 and a second connecting block 622, the first connecting block 621 is connected with the piston rod, a fixing groove is provided on the first connecting block 621, the fixing groove is located on the opposite side of the piston rod, an adapter hole is provided on the first connecting block 621, the adapter hole is communicated with the fixing groove, a connecting hole 30 is provided on the second connecting block 622, the adapter hole and the connecting hole 30 are on the same axis, the second connecting block 622 is arranged in the fixing groove and passes through the adapter hole and the connecting hole 30 through a rotating shaft 64, and one end of the connecting rod 63 is connected with the rotating shaft 64. Optionally, corresponding connecting ears are provided on both sides of the first connecting block 621, the holes on the connecting ears are coaxial with the adapter hole, and the first connecting block 621 can rotate relative to the second connecting block 622 by matching the connecting ears with the rotating shaft 64. In work, the piston rod of the loading oil cylinder 61 is extended, the piston rod moves and pushes the first connecting block 621 to move, and since the connecting rod 63 can rotate to realize that the second connecting block 622 abuts against the holding piece 53, the sliding support 51 is pushed to move. If the holding piece 53 clamps a relatively long experimental pipeline, the pipeline will be bent to a certain extent, and when the second connecting block 622 abuts against the experimental pipeline, since the second connecting block 622 moves relative to the first connecting block 621, the stress generated between the second connecting block 622 and the experimental pipeline will be reduced, and the corresponding loading work can be smoothly carried out. It should be noted that the loading oil cylinder 61 is integrated with a force sensor, which can detect the test data of the measured object, that is, can detect the pressure of the measured object.

[0029] The load frame of the embodiment takes the high-pressure collapse test of the casing as an example to perform the test process: in the first step, installation and adjustment, the stabilizing part 4 is fixed and installed on the support column 31 of the load frame 3 through the arc-shaped clamping plate 44, the lead screw is adjusted, and the first semicircle ring and the second semicircle ring are matched with the outer diameter of the sample. In the second step, the sample is clamped, the two ends of the sample are respectively placed into the corresponding holding pieces 53 after the holding pieces 53 are opened, then the holding pieces 53 are closed, and it is ensured that the force sensor is centered with the loading oil cylinder 61. In the third step, the protection is enabled, the protective cover 2 is closed, the loading oil cylinder 61 is started to apply pressure, and data is collected synchronously. In the fourth step, the dynamic monitoring, the stabilizing part 4 feeds back the sample deformation data in real time, the control module automatically adjusts the loading rate, and instability is prevented.

[0030] The main function of the load frame 3 of the embodiment is to bear the self-weight of the loading oil cylinder 61, the sample and the external pressure cylinder and specific test devices, and cooperate with the loading oil cylinder 61 to apply an axial load to the sample. It can create enough space to accommodate the oil pipe and the casing sample; it can bear the splash caused by the sudden failure of the sample to prevent the splash from hurting people.

[0031] The load frame 3 can adapt to samples with various outer diameters such as oil pipes and casings, has high flexibility, the protective cover 2 has high impact strength and can bear large failure impact, has high safety, plays a role in redundant safety protection, the load control has small fluctuation, the sensor has high precision, has high test precision, and further improves the accuracy of the test. The modular design greatly shortens the time for installing, replacing and dismounting the key components. The functional modules can be quickly mounted and dismounted through the support beam 14 of the base 10, and support various loading mode tests. Through the setting of the stabilizing part 4, the vertical frame can be adjusted in real time, adapt to different sample lengths and load conditions, prevent equipment damage caused by compression instability, the protective cover 2 cooperates with the anti-instability device to form a multi-layer protection system, and solves the problem of inconvenient use in the prior art.

[0032] The modular, high-safety and high-precision load frame of the structures of the embodiment significantly improves the flexibility and reliability of the test system through the detachable functional modules, the anti-instability device and the redundant safety design, and solves the problems of the prior art that the load frame structure is not firm and is inconvenient to use.

[0033] Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A load frame for loading a test system, characterized by, The utility model relates to a kind of test device for testing the clamping space size of clamp, including: fixed seat (1), protective cover (2), load frame (3), stabilizing part (4), clamping part (5) and drive part (6), the load frame (3) is located on the fixed seat (1), the protective cover (2) is hinged on the fixed seat (1) and forms sealed space, the load frame (3) and the stabilizing part (4) are in the sealed space, the stabilizing part (4) is installed on the load frame (3), and test part (7) capable of adjusting the size of clamping space is provided on the stabilizing part (4), the clamping part (5) is slidably arranged on the end of the fixed seat (1), one end of the drive part (6) is arranged on the load frame (3), and the other end is hinged with the clamping part (5). The load frame (3) includes two cross beams (32) and two support columns (31), two support columns (31) are arranged at intervals, and the two ends of two support columns (31) are threadedly connected with two cross beams (32) arranged at intervals, two cross beams (32) are respectively provided with connecting holes (30), the drive part (6) is hinged with the clamping part (5) through the connecting hole (30), two support columns (31) are respectively installed on the two sides of the fixed seat (1), and the two sides of the stabilizing part (4) are matched with two support columns (31).

2. The load frame for loading a test system of claim 1, wherein, The stabilizing part (4) includes first shelf plate (41), second shelf plate (42) and two clamping plates (44), the first shelf plate (41) and the second shelf plate (42) are arranged at intervals, the two ends of the first shelf plate (41) and the second shelf plate (42) are connected through an installation plate (43), the test part (7) is arranged between the first shelf plate (41) and the second shelf plate (42), the test part (7) is connected with the corresponding installation plate (43), two clamping plates (44) are respectively arranged on the outer side wall of the corresponding installation plate (43), and two clamping plates (44) are matched with the corresponding structure of the load frame (3).

3. The load frame for loading a test system of claim 1, wherein, The test part (7) includes test frame (71) and a plurality of adjusting rods (72), a plurality of adjusting rods (72) are arranged at intervals along the circumferential direction of the test frame (71), a plurality of adjusting rods (72) are threadedly arranged on the test frame (71), and the two sides of the test frame (71) are connected with the stabilizing part (4).

4. The load frame for loading a test system of claim 1, wherein, The protective cover (2) includes cover shell (20) and a plurality of hinged parts (21), a plurality of hinged parts (21) are respectively arranged on the two sides of the cover shell (20) and extend out of the two sides of the cover shell (20), so that a plurality of hinged parts (21) on any side of the cover shell (20) are hinged with the fixed seat (1).

5. The load frame for loading a test system of claim 1, wherein, ​ 6. The load frame for loading a test system of claim 1, wherein, The fixed seat (1) comprises a base (10), a plurality of hinged arms (11) and a plurality of clamping seats (12), the plurality of clamping seats (12) are respectively arranged on the top of the two sides of the base (10), the load frame (3) is matched with the plurality of clamping seats (12), the plurality of hinged arms (11) are respectively arranged on the two outer side walls of the base (10), the hinged arms (11) are hinged with the protective cover (2), two supporting beams (14) are respectively arranged on the two inner side walls of the base (10), and the clamping part (5) is slidingly arranged on the two supporting beams (14).

7. The load frame for loading a test system of claim 1, wherein, The clamping part (5) comprises a sliding support (51), a sliding seat (52) and a holding piece (53), the sliding seat (52) is arranged in the fixed seat (1), the sliding seat (52) is arranged at the bottom of the sliding support (51), the holding piece (53) is arranged at the top of the sliding support (51), the holding piece (53) is on the same axis as the center of the test part (7), the driving part (6) is hinged with the sliding support (51), and the end part of the driving part (6) is initially arranged at a position away from the holding piece (53), and the driving part (6) is driven to move towards the holding piece (53) until the target part held by the holding piece (53) is abutted.

8. The load frame for loading a test system of claim 7, wherein, The holding piece (53) comprises a first hoop (531) and a second hoop (532), the first hoop (531) is arranged on the sliding support (51), and the second hoop (532) is detachably arranged on the second hoop (532).

9. The load frame for loading a test system of claim 1, wherein, The driving part (6) comprises a loading oil cylinder (61), a connecting module (62) and a connecting rod (63), the loading oil cylinder (61) is located outside the sealed space, a piston rod on the loading oil cylinder (61) penetrates through the load frame (3) and is connected with the connecting module (62), one end of the connecting rod (63) is connected with one side of the connecting module (62), and the other end of the connecting rod (63) is hinged with the clamping part (5).

10. The load frame for loading a test system of claim 9, wherein, The connecting module (62) comprises a first connecting block (621) and a second connecting block (622), the first connecting block (621) is connected with the piston rod, a fixed groove is arranged on the first connecting block (621), the fixed groove is located on the opposite side of the piston rod, an adapter hole is arranged on the first connecting block (621), the adapter hole is in communication with the fixed groove, a connecting hole (30) is arranged on the second connecting block (622), the adapter hole and the connecting hole (30) are on the same axis, the second connecting block (622) is arranged in the fixed groove and penetrates through the adapter hole and the connecting hole (30) through a rotating shaft (64), and one end of the connecting rod (63) is connected with the rotating shaft (64).

Images