Jack calibration device

Abstract

The utility model relates to a calibration device, in particular to a jack calibration device which comprises a base, an installation frame, a standard dynamometer and a positioning assembly. The standard dynamometer is arranged in the middle of the base, and a supporting seat is arranged on the standard dynamometer; the mounting frame is erected on the base, and a fixed seat is arranged in the middle of the mounting frame; the supporting base and the fixing base are coaxially provided with jack positioning grooves in the vertical direction. The positioning assembly comprises quick rotating sleeves and clamping arm sets, the supporting base and the fixing base are each provided with one quick rotating sleeve in a threaded fit mode, the supporting base and the fixing base are each provided with one clamping arm set in a hinged mode, the clamping arm sets are arranged around the jack positioning groove, the quick rotating sleeves abut against the clamping arm sets, and the clamping arm sets are provided with jack positioning parts. According to the utility model, the stress direction of the dynamometer and the force application direction of the jack are ensured to be on the same axis in the calibration operation, so that the calibration precision is improved.

Description

Technical Field

[0001] The utility model relates to a calibration device, in particular to a jack calibration device. Background Art

[0002] The jack is used for lifting, supporting and other work. To ensure that the jack can work normally, it needs to be calibrated regularly. The structure of the jack calibration equipment can refer to the Chinese utility model patent with application number CN202221264326.1, which is named as a measurement and calibration device for a jack. During the use of the traditional jack calibration device, the force direction of the dynamometer and the force direction of the jack are not on the same axis, which causes the jack to tilt and offset, resulting in errors in the calibration results. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a jack calibration device which improves the positioning accuracy of the jack and avoids calibration errors.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a jack calibration device, including a base, a mounting frame, a standard dynamometer and a positioning assembly;

[0005] The standard dynamometer is arranged in the middle of the base, and a support seat is arranged on the standard dynamometer;

[0006] The mounting frame is mounted on the base, and a fixing seat is provided in the middle of the mounting frame;

[0007] The support seat and the fixing seat are coaxially provided with jack positioning grooves along the vertical direction;

[0008] The positioning assembly includes a quick-rotating sleeve and a clamping arm group. The support seat and the fixed seat are both threadedly fitted with a group of quick-rotating sleeves. The support seat and the fixed seat are both hinged with a group of clamping arm groups. The clamping arm group is arranged around the jack positioning groove. The quick-rotating sleeve abuts against the clamping arm group. The clamping arm group is provided with a jack positioning part.

[0009] Furthermore, the clamp arm assembly includes more than two clamp arm bodies arranged around the jack positioning slot.

[0010] Furthermore, a supporting ball head is provided on the clamp arm body at the jack positioning portion.

[0011] Furthermore, the mounting frame and the base are integrally formed.

[0012] Furthermore, it also includes an oil pump and an oil pipe, the oil pump is connected to the jack to be tested in the jack positioning groove through the oil pipe, and the oil pump is provided with a pressure gauge.

[0013] The beneficial effects of the utility model are as follows: a jack calibration device is provided, wherein a base is used to install a standard dynamometer, a support seat for supporting the lower part of the jack is provided on the standard dynamometer, and a fixed seat on the mounting frame is used to support the upper part of the jack. Compared with the prior art, the device first performs axial positioning on the upper and lower parts of the jack respectively through upper and lower positioning components before performing the calibration operation to avoid the jack from being offset relative to the test direction of the standard dynamometer, and the quick-spin sleeve is rotated to make the quick-spin sleeve abut against the clamp arm group, and the clamp arm group rotates, and one end of the clamp arm group is provided with a jack positioning part abuts against the surface of the jack and supports and fixes it, so that it remains stable in the radial direction, ensuring that the force direction of the dynamometer and the force direction of the jack during the calibration operation are on the same axis, thereby improving the calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic structural diagram of a jack calibration device according to an embodiment of the utility model;

[0015] Figure 2 Shown is a schematic structural diagram of a jack calibration device according to an embodiment of the utility model;

[0016] Description of labels:

[0017] 1. Base; 2. Mounting frame; 21. Fixed seat; 3. Standard dynamometer; 31. Support seat; 311. Jack positioning slot; 4. Positioning assembly; 41. Quick-spin sleeve; 42. Clamp arm assembly; 421. Jack positioning part; 422. Clamp arm body; 423. Support ball head; 5. Oil pump; 51. Oil pipe; 52. Pressure gauge. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0019] The utility model provides a jack calibration device, which is applied to jack calibration equipment.

[0020] Please refer to Figure 1 to Figure 2 As shown, a jack calibration device of the utility model comprises a base 1, a mounting frame 2, a standard dynamometer 3 and a positioning assembly 4;

[0021] The standard dynamometer 3 is arranged in the middle of the base 1, and a support seat 31 is arranged on the standard dynamometer 3;

[0022] The mounting frame 2 is mounted on the base 1, and a fixing seat 21 is provided in the middle of the mounting frame 2;

[0023] The support seat 31 and the fixing seat 21 are coaxially provided with a jack positioning groove 311 along the vertical direction;

[0024] The positioning assembly 4 includes a quick-spinning sleeve 41 and a clamping arm group 42. The support seat 31 and the fixed seat 21 are both threadedly fitted with a group of quick-spinning sleeves 41. The support seat 31 and the fixed seat 21 are both hinged with a group of clamping arm groups 42. The clamping arm group 42 is arranged around the jack positioning groove 311. The quick-spinning sleeve 41 abuts against the clamping arm group 42. The clamping arm group 42 is provided with a jack positioning portion 421.

[0025] From the above description, it can be seen that the beneficial effects of the utility model are: providing a jack calibration device, the base 1 is used to install the standard dynamometer 3, the standard dynamometer 3 is provided with a support seat 31 for supporting the lower part of the jack, and the fixed seat 21 on the mounting frame 2 is used to support the upper part of the jack. Compared with the prior art, the present device first axially positions the upper and lower parts of the jack respectively through the upper and lower positioning components 4 before performing the calibration operation to avoid the jack from being offset relative to the test direction of the standard dynamometer 3, and the quick-spin sleeve 41 is rotated to make the quick-spin sleeve 41 abut against the clamp arm group 42, and the clamp arm group 42 rotates. The clamp arm group 42 is provided with a jack positioning part 421, one end of which abuts against the surface of the jack and supports and fixes it, so that it remains stable in the radial direction, ensuring that the force direction of the dynamometer and the force direction of the jack during the calibration operation are on the same axis, thereby improving the calibration accuracy.

[0026] In an optional embodiment, the clamp arm assembly 42 includes more than two clamp arm bodies 422 arranged around the jack positioning slot 311 .

[0027] As can be seen from the above description, the clamp arm bodies 422 are evenly arranged around the jack and supported on the circumferential surface of the jack from multiple angles.

[0028] In an optional embodiment, the clamp arm body 422 is provided with a supporting ball head 423 at the jack positioning portion 421 .

[0029] From the above description, it can be known that the design of the supporting ball head 423 structure can, on the one hand, play the role of radial positioning and shock absorption, and on the other hand, avoid friction between the jack and the positioning component 4.

[0030] In an optional embodiment, the mounting frame 2 and the base 1 are integrally formed.

[0031] In an optional embodiment, an oil pump 5 and an oil pipe 51 are further included. The oil pump 5 is connected to the jack to be tested in the jack positioning groove 311 through the oil pipe 51 , and the oil pump 5 is provided with a pressure gauge 52 .

[0032] From the above description, it can be seen that oil is supplied to the jack to be tested through the oil pump 5, which pushes the piston of the jack to move and applies pressure to the standard dynamometer 3. The standard value of the standard dynamometer 3 and the pressure value displayed on the pressure gauge 52 are recorded multiple times. The accuracy of the jack can be determined by comparison and calculation.

[0033] The working principle of the utility model is: when in use, the jack to be tested is first placed on the support seat 31 with a pressure sensor of the standard dynamometer 3, and then the quick-rotating sleeve 41 is rotated to make the jack positioning part 421 of the clamping arm group 42 approach and support the jack, and then oil is supplied to the jack to be tested through the oil pump 5, and the values ​​of the standard dynamometer 3 and the pressure gauge 52 are recorded respectively, so that the jack can be calibrated.

[0034] Please refer to Figure 1 to Figure 2 As shown, the first embodiment of the utility model is: a jack calibration device, including a base 1, a mounting frame 2, a standard dynamometer 3 and a positioning assembly 4;

[0035] The standard dynamometer 3 is arranged in the middle of the base 1, and a support seat 31 is arranged on the standard dynamometer 3;

[0036] The mounting frame 2 is mounted on the base 1, and a fixing seat 21 is provided in the middle of the mounting frame 2;

[0037] The support seat 31 and the fixing seat 21 are coaxially provided with a jack positioning groove 311 along the vertical direction;

[0038] The positioning assembly 4 includes a quick-spinning sleeve 41 and a clamping arm group 42. The support seat 31 and the fixed seat 21 are both threadedly fitted with a group of quick-spinning sleeves 41. The support seat 31 and the fixed seat 21 are both hinged with a group of clamping arm groups 42. The clamping arm group 42 is arranged around the jack positioning groove 311. The quick-spinning sleeve 41 abuts against the clamping arm group 42. The clamping arm group 42 is provided with a jack positioning portion 421.

[0039] The clamp arm assembly 42 includes more than two clamp arm bodies 422 arranged around the jack positioning groove 311. The clamp arm body 422 is provided with a supporting ball head 423 at the jack positioning portion 421. The mounting frame 2 is integrally formed with the base 1. It also includes an oil pump 5 and an oil pipe 51. The oil pump 5 is connected to the jack to be tested in the jack positioning groove 311 through the oil pipe 51, and the oil pump 5 is provided with a pressure gauge 52.

[0040] In summary, the utility model provides a jack calibration device, the base is used to install a standard dynamometer, the standard dynamometer is provided with a support seat for supporting the lower part of the jack, and the fixed seat on the mounting frame is used to support the upper part of the jack. Compared with the prior art, the device first axially positions the upper and lower parts of the jack through upper and lower positioning components before performing the calibration operation to avoid the jack from shifting relative to the test direction of the standard dynamometer, and the quick-spin sleeve is rotated to make the quick-spin sleeve abut against the clamp arm group, and the clamp arm group rotates, and one end of the clamp arm group is provided with a jack positioning part abuts against the surface of the jack and supports and fixes it, so that it remains stable in the radial direction, ensuring that the force direction of the dynamometer and the force direction of the jack during the calibration operation are on the same axis, thereby improving the calibration accuracy.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A jack calibration device, characterized in that: Includes base, mounting bracket, standard force gauge and positioning assembly; The standard dynamometer is arranged in the middle of the base, and a support seat is arranged on the standard dynamometer; The mounting frame is mounted on the base, and a fixing seat is provided in the middle of the mounting frame; The support seat and the fixing seat are coaxially provided with jack positioning grooves along the vertical direction; The positioning assembly includes a quick-rotating sleeve and a clamping arm group. The support seat and the fixed seat are both threadedly fitted with a group of quick-rotating sleeves. The support seat and the fixed seat are both hinged with a group of clamping arm groups. The clamping arm group is arranged around the jack positioning groove. The quick-rotating sleeve abuts against the clamping arm group. The clamping arm group is provided with a jack positioning part.

2. The jack calibration device according to claim 1, characterized in that: The clamp arm assembly comprises more than two clamp arm bodies which are arranged around the jack positioning groove.

3. The jack calibration device according to claim 2, characterized in that: The clamp arm body is provided with a supporting ball head at the jack positioning portion.

4. The jack calibration device according to claim 1, characterized in that: The mounting frame and the base are integrally formed.

5. The jack calibration device according to claim 1, characterized in that: It also includes an oil pump and an oil pipe. The oil pump is connected to the jack to be tested in the jack positioning groove through the oil pipe. The oil pump is provided with a pressure gauge.

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