Compression mode clamp structure of universal testing machine

Abstract

The utility model discloses a compression mode clamp structure of a universal testing machine, which comprises an upper connecting column and a lower connecting column, the bottom of the lower connecting column is fixed on the top surface of a base of the universal testing machine, and the top of the upper connecting column is fixed at the bottom of a force sensor mounted in the middle of the bottom surface of a lifting cross beam mounted in the middle of the universal testing machine. An upper pressing head connecting piece is installed at the bottom of the upper connecting column, an inserting hole extending upwards is formed in the middle of the bottom face of the upper pressing head connecting piece, and the pressing head is located under the upper pressing head connecting piece. The upper pressing head connecting piece is directly installed on the upper connecting column, the pressing head can be installed only by screwing the upper locking nut after the vertical rod is inserted into the upper pressing head connecting piece, when the pressing head is disassembled, the pressing head can be lowered and disassembled only by unscrewing the upper locking nut and pulling the two holding parts outwards, assembling and disassembling are convenient, the pressing head is convenient to replace, the replacement efficiency is high, and the cost is low. And test requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to material detection technical field more specifically relates to a compression mode's clamp structure of universal testing machine. BACKGROUND

[0002] Universal testing machine, set tensile, bending, compression, shear, ring stiffness etc. in an organic whole material testing machine, it is mainly used for metal, nonmetallic material mechanical property test, is the ideal detection equipment of industrial and mining enterprises, scientific research units, colleges and universities, engineering quality supervision station etc. department.

[0003] And in some colleges and universities test, it generally adopts small universal testing machine to corresponding material test, the bottom of the force sensor installed in the bottom surface middle part of the lifting crossbeam installed in the middle of the universal testing machine will install detachable upper compression head, and the lower compression block is fixed on the top surface of the base of the universal testing machine, wherein, according to the volume of different products, it needs to replace different size upper compression head, and the existing upper compression head installation is all installed in the upper connecting column by the way of positioning pin and locking nut, which is troublesome to disassemble and assemble, so that it is troublesome to replace, and the efficiency is low. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the insufficient prior art, provides a compression mode's clamp structure of universal testing machine, it is directly installed on the upper compression head connecting piece on the upper connecting column, the compression head only needs to be inserted into the upper compression head connecting piece after the vertical rod, and the upper locking nut is tightened, that is, the installation can be completed, when disassembling, only need to loosen the upper locking nut, pull out the two holding parts, the compression head can be lowered, and the disassembly is completed, which is convenient to assemble and disassemble, convenient to replace the compression head, high replacement efficiency, and meets the test needs.

[0005] The utility model solves the technical problem of the scheme:

[0006] A compression mode's clamp structure of universal testing machine, including upper connecting column and lower connecting column, the bottom of lower connecting column is fixed on the top surface of the base of universal testing machine, the top of upper connecting column is fixed on the bottom of the force sensor installed in the bottom surface middle part of the lifting crossbeam installed in the middle of the universal testing machine, the bottom of upper connecting column is installed with upper compression head connecting piece, the bottom surface middle part of upper compression head connecting piece is formed with the upward extending insertion hole, the compression head is directly below the upper compression head connecting piece, the top surface middle part of compression head is formed with vertical rod, the outer side wall of vertical rod is formed with external thread, the upper part of vertical rod is screwed with limit sleeve, and the upper part of vertical rod and limit sleeve are in insertion hole;

[0007] The left and right side walls of the lower part of the jack are formed with left and right extending transverse through holes, and elastic blocks are inserted into the transverse through holes, the inner ends of the two elastic blocks are located in the jack, the bottom surface of the limiting sleeve is pressed against the top surface of the inner ends of the two elastic blocks, the lower part of the vertical rod extends out of the bottom end of the jack and is screwed with an upper locking nut, the top surface of the upper locking nut is pressed against the bottom surface of the upper pressing head connecting piece;

[0008] The upper part of the lower connecting column is provided with a lower pressing block, and the pressing head faces the top surface of the lower pressing block.

[0009] The inner side wall of the outer end of the transverse through hole is formed with an inner annular groove, the inner side wall of the inner annular groove is formed with an inner thread, an outer end plate is screwed on the inner thread, the inner end surface of the outer end plate is pressed against the inner end surface of the inner annular groove, the outer end of the elastic block is inserted into the corresponding transverse through hole, the outer side wall of the elastic block is tightly attached to the inner side wall of the corresponding transverse through hole, the outer end surface of the elastic block is screwed with a connecting block, the outer end surface of the connecting block is fixed with a transverse rod, the outer end of the transverse rod extends out of the outer end of the middle through hole of the corresponding outer end plate and is fixed with a holding part, the inner end surface of the holding part is pressed against the outer end surface of the corresponding outer end plate, a pressing spring is inserted into the transverse through hole, the inner end of the pressing spring is pressed against the outer end surface of the corresponding connecting block, and the outer end of the pressing spring is pressed against the inner end surface of the corresponding outer end plate.

[0010] The bottom surface of the inner end of the two elastic blocks is an inclined wall surface, and the upper parts of the two inclined wall surfaces are close to each other and the lower parts are far away from each other.

[0011] The protruding effect of the utility model is:

[0012] Compared with the prior art, the upper pressing head connecting piece is directly installed on the upper connecting column, the pressing head only needs to be screwed with the upper locking nut after the vertical rod is inserted into the upper pressing head connecting piece, and the installation is completed, when disassembling, only the upper locking nut is loosened, the two holding parts are pulled outwards, the pressing head is lowered, and the disassembly is completed, which is convenient to assemble and disassemble, convenient to replace the pressing head, high in replacement efficiency, and meets the test needs. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a partial structure schematic view of the utility model;

[0014] Figure 2 is Figure 1 a partial enlarged view of

[0015] Figure 3 is Figure 2 a partial enlarged view of

[0016] Figure 4 is a partial structure schematic view of the inner end surface of the elastic block. DETAILED DESCRIPTION

[0017] Embodiments, see as Figures 1 to 4 As shown in the figure, the compression mode clamp structure of the universal testing machine includes an upper connecting column 10 and a lower connecting column 20. The bottom of the lower connecting column 20 is fixed on the top surface of the base of the universal testing machine, and the top of the upper connecting column 10 is fixed on the bottom of the force sensor installed in the middle of the lifting cross beam installed in the middle of the universal testing machine. The above structures are all conventional structures, which will not be described in detail here, and some of the structures are not shown in the figure.

[0018] The bottom of the upper connecting column 10 is provided with an upper punch connecting piece 30. The specific structure is that the middle of the bottom surface of the upper connecting column 10 is formed with an upward extending upper insertion hole, the middle of the top surface of the upper punch connecting piece 30 is formed with a connecting screw rod 39 extending upward, the middle of the connecting screw rod 39 is formed with a left-right penetrating transverse through hole, the transverse through hole is communicated with and corresponds to the side through hole on the left and right two side walls of the upper insertion hole, the transverse pin 391 is inserted into the corresponding transverse through hole and the upper insertion hole, the two ends of the transverse pin 391 extend out of the outer ends of the side through holes, the first locking nut is screwed on the connecting screw rod 39, the top surface of the first locking nut is pressed against the bottom surface of the upper connecting column 10, the middle of the top surface of the transverse pin 391 is pressed against the top surface of the transverse through hole, and the part of the bottom surface of the transverse pin 391 in the side through hole is pressed against the bottom surface of the side through hole.

[0019] The middle of the bottom surface of the upper punch connecting piece 30 is formed with an upward extending insertion hole 31, the punch 40 is directly below the upper punch connecting piece 30, the middle of the top surface of the punch 40 is formed with a vertical rod 41, the outer side wall of the vertical rod 41 is formed with an external thread, the upper part of the vertical rod 41 is screwed with a limiting sleeve 42, and the upper part of the vertical rod 41 and the limiting sleeve 42 are in the insertion hole 31.

[0020] The left and right two side walls of the lower part of the insertion hole 31 are each formed with a left-right extending transverse through hole 32, the transverse through hole 32 is inserted with a telescopic block 33, the inner ends of the two telescopic blocks 33 are in the insertion hole 31, the bottom surface of the limiting sleeve 42 is pressed against the top surface of the inner ends of the two telescopic blocks 33, the lower part of the vertical rod 41 extends out of the bottom end of the insertion hole 31 and is screwed with an upper locking nut 43, and the top surface of the upper locking nut 43 is pressed against the bottom surface of the upper punch connecting piece 30.

[0021] Further, the upper part of the lower connecting column 20 is provided with a lower pressing block 50, and the pressing head 40 is opposite to the top surface of the lower pressing block 50. The middle part of the top surface of the lower connecting column 20 is formed with a lower insertion hole, the middle part of the bottom surface of the lower pressing block 50 is formed with a lower connecting stud, the lower connecting stud is inserted into the lower insertion hole, the middle part of the lower connecting stud is formed with a left-right penetrating lower transverse through hole, the left and right side walls of the lower insertion hole are formed with lower side through holes, a lower transverse pin 51 is inserted into the lower transverse through hole and the two lower side through holes, the outer end of the lower transverse pin 51 extends out of the corresponding lower side through hole, the bottom surface of the lower insertion hole is fixed with a lower spring, the top end of the lower spring is pressed against the bottom end surface of the lower connecting stud, the lower connecting stud is screwed with a second locking nut, the bottom surface of the second locking nut is pressed against the top surface of the lower connecting column 20, the middle bottom surface of the lower transverse pin 51 is pressed against the bottom surface of the lower transverse through hole, and the top surface of the lower transverse pin 51 at the lower side through hole is pressed against the top surface of the lower side through hole.

[0022] The above structure is the connecting structure of the lower pressing block 50 and the upper pressing head connecting piece 30 fixed in the lower connecting column 20 and the upper connecting column 10, which can be disassembled by loosening the corresponding first locking nut and second locking nut, that is, the corresponding lower transverse pin 51 and transverse pin 391 are removed, that is, the lower pressing block 50 and the upper pressing head connecting piece 30 are disassembled from the lower connecting column 20 and the upper connecting column 10, which is convenient to install and disassemble.

[0023] The top surface of the inner end of the two telescopic blocks 33 is formed with a downward extending recess 331, the bottom surface of the recess 331 is a plane, and the bottom surface of the limiting sleeve 42 is pressed against the top surface of the recess 331. The bottom surface of the recess 331 is a plane, which improves the contact area between the bottom surface of the limiting sleeve 42 and the top surface of the recess 331, so that they are pressed stably.

[0024] Further, the outer end inner side wall of the transverse through hole 32 is formed with an inner annular recess, the inner side wall of the inner annular recess is formed with an inner thread, the outer end plate 34 is screwed on the inner thread, the inner end surface of the outer end plate 34 is pressed against the inner end surface of the inner annular recess, the telescopic block 33 is inserted into the corresponding transverse through hole 32, the outer side wall of the telescopic block 33 is tightly attached to the inner side wall of the corresponding transverse through hole 32, the screwing hole in the middle part of the outer end surface of the telescopic block 33 is screwed with a connecting block 35, the outer end surface middle part of the connecting block 35 is fixed with a transverse rod 36, the outer end of the transverse rod 36 extends out of the outer end of the middle part through hole of the corresponding outer end plate 34 and is fixed with a holding part 37, the inner end surface of the holding part 37 is pressed against the outer end surface of the corresponding outer end plate 34, the pressing spring 1 is inserted into the transverse through hole 32, the inner end of the pressing spring 1 is pressed against the outer end surface of the corresponding connecting block 35, and the outer end of the pressing spring 1 is pressed against the inner end surface of the corresponding outer end plate 34.

[0025] The inner side wall of the middle through hole of the outer end plate 34 is clamped with a wear-resistant self-lubricating sleeve 2, and the transverse rod 36 is inserted into the wear-resistant self-lubricating sleeve 2, and the outer side wall of the transverse rod 36 is tightly attached to the inner side wall of the corresponding wear-resistant self-lubricating sleeve 2.

[0026] The bottom surface of the inner end of the two telescopic blocks 33 is a slanted wall surface, and the upper part of the two slanted wall surfaces is close to each other and the lower part is far away from each other.

[0027] The top surface of the insertion hole 31 is fixed with an upper buffer spring 3, the top end of the upper buffer spring 3 is stressed on the top surface of the insertion hole 31, and the bottom end of the upper buffer spring 3 is stressed on the top end surface of the vertical rod 41.

[0028] The top surface of the insertion hole 31 is fixed with a protruding part in the middle, and the protruding part is inserted into the upper part of the upper buffer spring 3.

[0029] In use, when the pressing head 40 is installed, only the upper part of the vertical rod 41 is inserted into the insertion hole 31 and pushed upward, the two telescopic blocks 33 are moved outward along the bottom surface (slanted wall surface) of the inner end of the two telescopic blocks 33 by the top end of the limiting sleeve 42, so that the corresponding compression spring 1 is compressed, until the upper part of the vertical rod 41 and the limiting sleeve 42 are moved upward from the inner end of the two telescopic blocks 33, at this time, the two telescopic blocks 33 are relatively moved by the elastic recovery force of the compression spring 1, so that the inner end is in the insertion hole 31, at this time, the bottom surface of the limiting sleeve 42 is pressed against the top surface of the groove 331, then the upper locking nut 43 is turned, so that the top surface thereof is pressed against the bottom surface of the upper pressing head connecting piece 30, and the fixing is achieved, which is firm;

[0030] When disassembling is needed, only the upper locking nut 43 is loosened, the two holding parts 37 are held and pulled outward, at this time, the compression spring 1 is compressed, the inner end of the two telescopic blocks 33 extends into the corresponding transverse through hole 32, at this time, the vertical rod 41 of the pressing head 40 directly falls out of the insertion hole 31, and the replacement can be carried out, the area of the replaced pressing block 40 is matched with the product to be processed, so as to facilitate the test, and the disassembly and assembly are very convenient, and the replacement efficiency is greatly improved.

[0031] Finally, it should be pointed out that the above embodiments are only more representative examples of the present application. Obviously, the present application is not limited to the above embodiments, and there can be many variations. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments shall be considered as falling within the protection scope of the present application.

Claims

1. A compression mode clamp structure of a universal testing machine, comprising an upper connecting column (10) and a lower connecting column (20), the bottom of the lower connecting column (20) is fixed on the top surface of the base of the universal testing machine, and the top of the upper connecting column (10) is fixed on the bottom of the force sensor installed in the middle of the bottom surface of the lifting cross beam installed in the middle of the universal testing machine, characterized in that: The bottom of the upper connecting column (10) is provided with an upper pressure head connecting piece (30), the middle of the bottom surface of the upper pressure head connecting piece (30) is formed with an upward extending insertion hole (31), the pressure head (40) is directly below the upper pressure head connecting piece (30), the middle of the top surface of the pressure head (40) is formed with a vertical rod (41), the outer side wall of the vertical rod (41) is formed with external threads, the upper part of the vertical rod (41) is screwed with a limiting sleeve (42), the upper part of the vertical rod (41) and the limiting sleeve (42) are in the insertion hole (31); The left and right side walls of the lower part of the insertion hole (31) are each formed with a leftward and rightward extending transverse through hole (32), the transverse through hole (32) is inserted with an elastic block (33), the inner ends of the two elastic blocks (33) are in the insertion hole (31), the bottom surface of the limiting sleeve (42) is pressed against the top surface of the inner ends of the two elastic blocks (33), the lower part of the vertical rod (41) protrudes from the bottom end of the insertion hole (31) and is screwed with an upper locking nut (43), the top surface of the upper locking nut (43) is pressed against the bottom surface of the upper pressure head connecting piece (30); The upper part of the lower connecting column (20) is provided with a lower pressing block (50), the pressure head (40) is opposite to the top surface of the lower pressing block (50).

2. The compression mode fixture structure of a universal testing machine according to claim 1, characterized in that: The top surface of the inner end of the two elastic blocks (33) is formed with a downward extending groove (331), the bottom surface of the groove (331) is a plane, the bottom surface of the limiting sleeve (42) is pressed against the top surface of the groove (331).

3. The compression mode fixture structure of a universal testing machine according to claim 1, characterized in that: The outer end inner side wall of the transverse through hole (32) is formed with an inner annular groove, the inner side wall of the inner annular groove is formed with internal threads, an outer end plate (34) is screwed on the internal threads, the inner end surface of the outer end plate (34) is pressed against the inner end surface of the inner annular groove, the outer end of the elastic block (33) is inserted in the corresponding transverse through hole (32), the outer side wall of the elastic block (33) is tightly attached to the inner side wall of the corresponding transverse through hole (32), the outer end surface middle part of the elastic block (33) is screwed with a connecting block (35), the outer end surface middle part of the connecting block (35) is fixed with a transverse rod (36), the outer end of the transverse rod (36) protrudes from the outer end of the middle through hole of the corresponding outer end plate (34) and is fixed with a holding part (37), the inner end surface of the holding part (37) is pressed against the outer end surface of the corresponding outer end plate (34), a pressing spring (1) is inserted in the transverse through hole (32), the inner end of the pressing spring (1) is pressed against the outer end surface of the corresponding connecting block (35), the outer end of the pressing spring (1) is pressed against the inner end surface of the corresponding outer end plate (34).

4. The compression mode fixture structure of a universal testing machine according to claim 3, characterized in that: The middle through hole of the outer end plate (34) is clamped with a wear-resistant self-lubricating sleeve (2), the transverse rod (36) is inserted in the wear-resistant self-lubricating sleeve (2), the outer side wall of the transverse rod (36) is tightly attached to the inner side wall of the corresponding wear-resistant self-lubricating sleeve (2).

5. The compression mode fixture structure of a universal testing machine according to claim 3, wherein: The bottom surface of the inner end of the two elastic blocks (33) is an inclined wall surface, the upper parts of the two inclined wall surfaces are close to each other and the lower parts are far away from each other.

6. The compression mode fixture structure of a universal testing machine according to claim 1, wherein: The top surface of the insertion hole (31) is fixed with an upper buffer spring (3), the top end of the upper buffer spring (3) is stressed against the top surface of the insertion hole (31), the bottom end of the upper buffer spring (3) is stressed against the top end surface of the vertical rod (41).

7. The compression mode fixture structure of a universal testing machine according to claim 6, characterized in that: The top surface of the jack (31) is fixed with a convex part in the middle, which is inserted into the upper part of the upper buffer spring (3).

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