CN220040131U

CN220040131U - Automatic impact test device of low temperature

Info

Publication number: CN220040131U
Application number: CN202321657133.7U
Authority: CN
Inventors: 林佳; 张世静; 高金亮; 李佳文
Original assignee: TIANXIANG (TIANJIN) QUALITY TECHNOLOGY SERVICE CO LTD
Current assignee: TIANXIANG (TIANJIN) QUALITY TECHNOLOGY SERVICE CO LTD
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2023-11-17
Anticipated expiration: 2033-06-27

Abstract

The utility model provides a low-temperature automatic impact test device, which comprises a main body, a rotary table assembly, a pulley assembly, an impact head and a bracket. The support is used as a main body frame, the support is composed of a support column and a straight plate, the pulley assembly and the impact head are both installed on the support, the turntable assembly is located below the impact head and is close to the impact head, and the pulley assembly is connected with the impact head and used for traction of the impact head. The utility model has the beneficial effects that: the refrigerating part and the testing part are separated from the mechanical structure, and the automatic impact test is realized, so that the efficiency is improved.

Description

Automatic impact test device of low temperature

Technical Field

The utility model belongs to the technical field of material testing, and particularly relates to a low-temperature automatic impact test device.

Background

The low-temperature impact test is a test method for testing cold resistance of materials under low-temperature conditions, and is mainly used for evaluating impact resistance and reliability of materials or products in extremely cold environments. The method is suitable for high-temperature and low-temperature reliability tests of industrial products, and is used for testing various performance indexes of parts and materials of related products such as electronic electricians, automobiles, motorcycles, aerospace, ship weapons, universities and scientific research institutions and the like under the low-temperature condition. The existing impact test device is often provided with refrigeration equipment such as a low-temperature box and a compressor and the like to meet the environmental low-temperature requirement, the energy consumption is large, the manufacturing cost is high, the special refrigeration equipment is used for limiting the application of the impact test device to the impact test, the use value of the impact test device is greatly reduced, the automatic feeding function is not realized by the existing mechanical structure, the test is carried out by manual feeding, and the test flow is complex and the efficiency is low.

Disclosure of Invention

In view of the above, the present utility model is directed to a low-temperature automatic impact test apparatus for separating a refrigerating part and a testing part from a mechanical structure and implementing an automatic impact test to improve efficiency.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a low-temperature automatic impact test device.

Further, the device comprises a turntable assembly, a pulley assembly, an impact head and a bracket, wherein the pulley assembly and the impact head are arranged on the bracket; the rotary disc assembly is positioned below the impact head, and the pulley assembly is connected with the impact head; the turntable assembly comprises a turntable, a bearing fixing seat, a ratchet wheel, a pawl, a connecting rod and a cylinder, wherein the turntable is connected with the bearing fixing seat and is positioned at the top end of the bearing fixing seat; the ratchet wheel is connected with the bearing fixing seat to realize quantitative directional rotation; one end of the connecting rod is connected with the ratchet wheel and the pawl, and the air cylinder is connected with the other end of the connecting rod and is used for rotating the ratchet wheel and the pawl; the pawl is matched with the turntable and used for limiting the rotation of the turntable; the pulley assembly comprises a first pulley, a second pulley, a third pulley, a fixed end and an adjusting seat; the first pulley, the second pulley and the third pulley are arranged on the bracket and are connected by a rope, the starting point of the rope is connected with the fixed end, and the terminal point of the rope is connected with the impact head; the adjusting seat is arranged on the bracket, and the third pulley is arranged on the adjusting seat and used for adjusting the height position of the impact head.

Further, the turntable is provided with a mounting position and a cantilever pin, the sample piece is mounted on the mounting position, and the cantilever pin is matched with the pawl; the mounting position is located below the impact head, and the sample piece is located on the falling path of the impact head.

Further, the impact head is cuboid, a sliding hole is formed in the impact head, and the sliding hole is in sliding connection with a support column of the support; the support is also provided with a limiting plate, and the limiting plate is positioned above the impact head and used for limiting the highest sliding position of the impact head.

Further, the bottom of the adjusting seat is connected with a telescopic cylinder, the telescopic cylinder is fixed on the support, the adjusting seat is in sliding connection with a support column of the support, and the telescopic cylinder is used for achieving up-and-down translation of the adjusting seat.

Further, a through groove is formed in the top end of the support, the first pulley is located above the through groove, and the second pulley and the third pulley are located below the through groove; the first pulley, the second pulley and the third pulley are fixed pulleys, and the fixed pulleys form a coplanar pulley block.

Further, the fixed end is arranged at the top end of the bracket, the terminal end of the rope is fixedly connected with the fixed end, and the connecting part of the rope is coplanar with the working parts of the first pulley, the second pulley and the third pulley; the rope penetrates through the limiting plate and is fixedly connected with the impact head.

Further, the ratchet is fixedly connected with the connecting rod, and the ratchet and the bearing fixing seat form a ratchet coupler for quantitatively and directionally rotating the turntable.

Further, the support still includes the chopping block, and the chopping block is located strike the head below, strike head and chopping block and mutually support and strike the sample piece.

Compared with the prior art, the low-temperature automatic impact test device has the following beneficial effects:

(1) According to the low-temperature automatic impact test device, the ratchet wheel and the bearing fixing seat form the ratchet wheel coupler, so that the turntable can be quantitatively and directionally rotated, and the test efficiency and the test precision are improved;

(2) According to the low-temperature automatic impact test device, the terminal end of the rope is fixedly connected with the fixed end, and the connecting part of the rope is coplanar with the working parts of the first pulley, the second pulley and the third pulley, so that the test sample can be ensured to be fully contacted with the impact head and the chopping board, and the stable position and the stable posture can be maintained.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is an axial view schematically showing a low-temperature automatic impact test apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a front cross-sectional view of a low-temperature automatic impact test apparatus according to an embodiment of the present utility model;

FIG. 3 is an axial view schematically illustrating a low-temperature automatic impact test apparatus according to an embodiment of the present utility model;

FIG. 4 is an axial view schematically showing a low-temperature automatic impact test apparatus according to an embodiment of the present utility model;

FIG. 5 is a schematic top view of a low temperature automatic impact test apparatus according to an embodiment of the present utility model;

FIG. 6 is a schematic top view of a turntable assembly according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a partial axial view of a turntable assembly according to an embodiment of the present utility model;

fig. 8 is a schematic view of a partial axial view of a turntable assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

1-a turntable assembly; 101-a turntable; 102-cantilever pins; 103-bearing holders; 104-ratchet wheel; 105-pawl; 106-a connecting rod; 107-cylinder; a 2-pulley assembly; 201-a first pulley; 202-a second pulley; 203-a third pulley; 204-a fixed end; 205-adjusting the seat; 3-an impact head; 4-a bracket; 5-limiting plates; 6-a telescopic cylinder; 7-cutting boards; 8-sample piece.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

According to the technical scheme, the whole set of test device is placed in a low-temperature box, an automatic impact test is carried out through an external pneumatic mechanism, specifically, the impact head 3 is lifted through pneumatic transmission, and the automatic impact test is realized by rotating the turntable 101.

A low-temperature automatic impact test device comprises a main body consisting of a turntable assembly 1, a pulley assembly 2, an impact head 3 and a bracket 4. The support 4 is used as a main body frame, the support 4 is composed of a support column and a straight plate, the pulley assembly 2 and the impact head 3 are both arranged on the support 4, and the turntable assembly 1 is positioned below the impact head 3 and is close to the impact head 3. The pulley assembly 2 is connected to the impact head 3 for pulling the impact head 3.

As shown in fig. 1-8, the turntable assembly 1 mainly has the following functions, namely, providing a plurality of mounting positions for the test pieces 8, realizing automatic material changing by pneumatically moving the test pieces 8, and keeping the test pieces 8 in a fixed and static state when an impact test is performed. The turntable assembly 1 comprises a turntable 101, a bearing fixing seat 103, a ratchet 104, a pawl 105, a connecting rod 106 and a cylinder 107, wherein the turntable 101 is fixedly connected with the bearing fixing seat 103 and is positioned at the top end of the bearing fixing seat 103, the bearing fixing seat 103 has a rotating function, and the turntable 101 can be driven to rotate by rotating the bearing fixing seat 103. The ratchet wheel 104 is connected with the bearing fixing seat 103, the bearing fixing seat 103 can be driven by the ratchet wheel 104 to realize quantitative directional rotation, one end of the connecting rod 106 is connected with the ratchet wheel 104 and the pawl 105, the air cylinder 107 is connected with the other end of the connecting rod 106, and the ratchet wheel 104 and the pawl 105 are rotated through power provided by the air cylinder 107. Specifically, the ratchet wheel 104 is fixedly connected with the connecting rod 106, and the ratchet wheel 104 and the bearing fixing seat 103 form a ratchet wheel 104 coupling, so that the turntable 101 can be quantitatively and directionally rotated, and the testing efficiency and the testing precision are improved.

Optionally, the pawl 105 cooperates with the turntable 101 for limiting rotation of the turntable 101. The turntable 101 is provided with at least two mounting locations, each of which is provided with a cantilever pin 102, and the sample 8 is mounted on the mounting location, the cantilever pin 102 being engaged with a pawl 105. The mounting position is located below the impact head 3 so that the sample 8 is located on the path along which the impact head 3 falls. The automatic material changing principle is as follows: the cylinder 107 pushes the connecting rod 106 to drive the ratchet 104 to rotate and simultaneously spring out the pawl 105, the ratchet 104 quantitatively orients the rotary bearing fixing seat 103, the rotary table 101 is driven by the bearing fixing seat 103 to quantitatively rotate once, the rotation quantity is just that the next installation position is aligned with the impact head 3, after the completion, the pawl 105 resets and contacts and cooperates with the cantilever pin 102 of the corresponding installation position, the fixed limiting effect on the rotary table 101 is achieved, and the stability of the subsequent impact test is facilitated.

Further, the pulley assembly 2 includes a first pulley 201, a second pulley 202, a third pulley 203, a fixed end 204, and an adjusting seat 205. The first pulley 201, the second pulley 202 and the third pulley 203 are all arranged on the bracket 4, the three pulleys are connected by a rope, the starting point of the rope is connected with the fixed end 204, the terminal point of the rope is connected with the impact head 3, and the traction effect of the impact head 3 is achieved. An adjusting seat 205 is mounted on the bracket 4, and a third pulley 203 is mounted on the adjusting seat 205 for adjusting the height position of the impact head 3.

Specifically, the bottom of the adjusting seat 205 is connected with the telescopic cylinder 6, the telescopic cylinder 6 is fixed on the support 4, and the adjusting seat 205 is slidably connected with a support column of the support 4, and the limiting function of the support column is matched, so that the up-down translational movement of the adjusting seat 205 can be realized due to the function of the telescopic cylinder 6, and then the tightness of a rope line is realized, so that the impact head 3 is released or pulled up.

Optionally, the impact head 3 is a cuboid, the impact head 3 is provided with a sliding hole, the sliding hole is in sliding connection with the support columns of the support 4, and preferably two support columns are used for ensuring that the impact head 3 is parallel when falling. The support 4 is further provided with a limiting plate 5, the rope penetrates through the limiting plate 5 and is fixedly connected with the impact head 3, the limiting plate 5 is located above the impact head 3 and is connected with two support columns in a sliding mode like the impact head 3, the limiting plate 5 is provided with an elastic structure which can be fixed or loosened relative to the support columns and used for limiting the highest sliding position of the impact head 3, and therefore impact energy caused by the impact head 3 is adjusted. The bracket 4 also comprises a chopping board 7, the chopping board 7 is positioned below the impact head 3, and the impact head 3 and the chopping board 7 are mutually matched to impact the sample piece 8

Further, the first pulley 201, the second pulley 202 and the third pulley 203 are fixed pulleys, the fixed pulleys form a coplanar pulley block, a penetrating groove is formed in the top end of the support 4, the first pulley 201 is located above the penetrating groove, the second pulley 202 and the third pulley 203 are located below the penetrating groove, the fixed end 204 is mounted on the top end of the support 4, the terminal end of the rope is fixedly connected with the fixed end 204, and the connecting portion of the rope is coplanar with the working portions of the first pulley 201, the second pulley 202 and the third pulley 203, so that the sample can be fully contacted with the impact head 3 and the chopping board 7, and stable positions and postures can be kept.

The impact test procedure is as follows:

firstly, a plurality of test pieces are fixed on the mounting position of the turntable 101, the turntable 101 is clamped with the pawl 105, the ratchet wheel 104 is clamped with the bearing fixing seat 103, and then the whole test device is placed in a low-temperature box, but a controller for controlling the pneumatic wire tube is not placed in the low-temperature box for operation of test staff. The tester controls the telescopic cylinder 6 to pull the impact head 3 up to the limiting plate 5, then loosens the telescopic cylinder 6, and the impact head 3 falls to impact the sample 8, so as to complete a test. Then the telescopic cylinder 6 is controlled to pull up the impact head 3 again for resetting, the cylinder 107 is controlled to perform reciprocating motion of one stroke, the ratchet 104 drives the rotary disc 101 to rotate so that the next sample piece 8 is aligned with the impact head 3, and the pawl 105 cooperates with the corresponding cantilever pin 102 to limit the rotation of the rotary disc 101 so as to realize automatic impact test for the next impact test.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a low temperature automatic impact test device which characterized in that: the device comprises a turntable assembly (1), a pulley assembly (2), an impact head (3) and a bracket (4), wherein the pulley assembly (2) and the impact head (3) are arranged on the bracket (4); the rotary disc assembly (1) is positioned below the impact head (3), and the pulley assembly (2) is connected with the impact head (3);

the turntable assembly (1) comprises a turntable (101), a bearing fixing seat (103), a ratchet wheel (104), a pawl (105), a connecting rod (106) and a cylinder (107), wherein the turntable (101) is connected with the bearing fixing seat (103) and is positioned at the top end of the bearing fixing seat (103);

the ratchet wheel (104) is connected with the bearing fixing seat (103) to realize quantitative directional rotation;

one end of a connecting rod (106) is connected with a ratchet wheel (104) and a pawl (105), and a cylinder (107) is connected with the other end of the connecting rod (106) and is used for rotating the ratchet wheel (104) and the pawl (105);

the pawl (105) is matched with the rotary table (101) and used for limiting the rotary table (101) to rotate;

the pulley assembly (2) comprises a first pulley (201), a second pulley (202), a third pulley (203), a fixed end (204) and an adjusting seat (205);

the first pulley (201), the second pulley (202) and the third pulley (203) are arranged on the bracket (4) and are connected by a rope, the starting point of the rope is connected with the fixed end (204), and the terminal point of the rope is connected with the impact head (3); the adjusting seat (205) is arranged on the bracket (4), and the third pulley (203) is arranged on the adjusting seat (205) and is used for adjusting the height position of the impact head (3).

2. The low temperature automatic impact test apparatus according to claim 1, wherein: the turntable (101) is provided with a mounting position and a cantilever pin (102), the sample piece (8) is mounted on the mounting position, and the cantilever pin (102) is matched with the pawl (105);

the mounting position is positioned below the impact head (3), and the sample piece (8) is positioned on the falling path of the impact head (3).

3. A low temperature automatic impact test apparatus according to claim 1 or 2, characterized in that: the impact head (3) is cuboid, the impact head (3) is provided with a sliding hole, and the sliding hole is in sliding connection with a support column of the support (4);

the bracket (4) is also provided with a limiting plate (5), and the limiting plate (5) is positioned above the impact head (3) and used for limiting the highest sliding position of the impact head (3).

4. The low temperature automatic impact test apparatus according to claim 1, wherein: the bottom of the adjusting seat (205) is connected with a telescopic cylinder (6), the telescopic cylinder (6) is fixed on the support (4), the adjusting seat (205) is slidably connected with a support column of the support (4), and the telescopic cylinder (6) is used for realizing up-down translation of the adjusting seat (205).

5. A low temperature automatic impact test apparatus according to claim 3, wherein: the top end of the bracket (4) is provided with a through groove, the first pulley (201) is positioned above the through groove, and the second pulley (202) and the third pulley (203) are positioned below the through groove;

the first pulley (201), the second pulley (202) and the third pulley (203) are fixed pulleys, and the fixed pulleys form a coplanar pulley block.

6. The low temperature automatic impact test apparatus according to claim 5, wherein: the fixed end (204) is arranged at the top end of the bracket (4), the terminal end of the rope is fixedly connected with the fixed end (204), and the connecting part of the rope is coplanar with the working parts of the first pulley (201), the second pulley (202) and the third pulley (203); the rope penetrates through the limiting plate (5) and is fixedly connected with the impact head (3).

7. The low temperature automatic impact test apparatus according to claim 1, wherein: the ratchet wheel (104) is fixedly connected with the connecting rod (106), and the ratchet wheel (104) and the bearing fixing seat (103) form a ratchet wheel (104) coupler for quantitatively and directionally rotating the rotary disc (101).

8. The low temperature automatic impact test apparatus according to claim 1, wherein: the support (4) further comprises a cutting board (7), the cutting board (7) is located below the impact head (3), and the impact head (3) and the cutting board (7) are matched with each other to impact the sample piece (8).