Verification device for torque wrench

Abstract

The utility model relates to the technical field of torque wrench calibration, and discloses a calibration device for a torque wrench, which comprises a bottom plate, a calibration table and a mounting rack II, one side of a detection head body is provided with a mounting rack I, the mounting rack I is movably provided with a connecting block, the other end of a supporting rod is fixedly connected with a positioning plate I, and the other end of the supporting rod is fixedly connected with the positioning plate II. According to the utility model, the head part of the wrench is driven to be close to the checking table, so that the head part of the wrench is accurately connected with the detection head body, and the detection accuracy is improved. The connecting block drives the first positioning plate to move downwards to contact the head of the verification wrench to limit the upper end of the wrench, the second electric push rod is started to push the limiting sleeve to move, the limiting sleeve is made to be close to the tail end of the wrench, the second positioning plate in the limiting sleeve is pushed to contact with the tail end of the wrench, and the tail end of the wrench is positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of torque wrench calibration, in particular to a calibration device for a torque wrench. Background Art

[0002] A wrench is a commonly used installation and disassembly tool. It is a hand tool that uses the principle of leverage to twist bolts, screws, nuts and other threaded fastening bolts or nuts through openings or holes. A fixed torque electric wrench, also known as a torque wrench, is an electric wrench characterized by easy operation, time-saving and labor-saving. In order to ensure that the torque wrench is in normal use, it is usually necessary to calibrate the torque wrench.

[0003] An existing fully automatic head-loaded torque wrench calibration stand (Announcement No. CN217845492U) has at least the following drawbacks: The device secures the torque wrench in place by using a platform-shaped guide block, along with a support plate, a test head, and a pair of clamping plates in a straight line. However, the wrench is only positioned laterally using two sets of clamping plates. This results in less than ideal positioning for different wrenches, which can easily affect the connection between the wrench and the test head, hindering stable calibration. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a calibration device for a torque wrench.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A calibration device for a torque wrench comprises a base plate, a calibration table and a second mounting frame, wherein a detection head body is mounted on the upper end of the calibration table by fasteners, a mounting frame is provided on one side of the detection head body, a connecting block is movably provided on the mounting frame, a positioning plate is provided below the connecting block, a buffer plate is provided between the upper end of the positioning plate and the connecting block, a support rod is movably mounted on the buffer plate, the top end of the support rod passes through and is connected to the buffer plate, and the other end of the support rod is fixedly connected to the first positioning plate, an electric push rod is mounted on the second mounting frame by fasteners, a limiting sleeve is fixedly provided at one end of the electric push rod, a positioning plate is movably provided inside the limiting sleeve, and a spring is fixedly mounted between the second positioning plate and the inner wall of the limiting sleeve.

[0007] As a further solution of the present invention, the connecting block is fixedly connected to the top of the buffer plate, the two ends of the connecting block are slidably connected to the inner wall of the mounting frame, the outside of the support rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the buffer plate and the top of the positioning plate.

[0008] As a further solution of the present invention, an electric push rod is installed on the upper end of the mounting frame through a fastener, the bottom end of the electric push rod is fixedly connected to the connecting block, the support rod is symmetrically distributed on the positioning plate, and the positioning plate is located above the detection head body.

[0009] As a further solution of the present invention, an electric slide rail is installed on the upper end of the base plate through fasteners, a groove frame is movably installed on the electric slide rail, a screw is installed inside the groove frame, and a screw block is provided on the screw.

[0010] As a further solution of the present invention, the screw block is threadedly connected to the screw rod, a motor is installed at one end of the screw rod, the motor is fixedly connected to one end of the screw rod through an output shaft, the other end of the screw rod is connected to the inner wall of the groove frame through a rotating shaft, and a clamping block is provided at the upper end of the limit sleeve.

[0011] As a further solution of the present invention, a fixing rod is fixedly installed on the upper end of the screw block, a support plate is installed on the fixing rod through a fastener, the bottom end of the clamping block is fixedly connected to the positioning plate 2, and the clamping block is slidably connected to the inner wall of the limit sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. First, the staff places the other end of the wrench to be calibrated on the support plate, supports the wrench with the fixed rod and the support plate, and then starts the electric slide rail to make the groove frame above drive the support plate to slide, driving the head of the wrench closer to the calibration table, turning on the motor, and the motor drives the screw to rotate through the output shaft, and the screw block drives the upper support plate to move, and adjusts the position of the wrench again to make the wrench head accurately connected with the detection head body, and finally starts the electric push rod 1, which pushes the connecting block to move downward, and the connecting block drives the positioning plate to move down and contact the calibration wrench head, limiting the upper end of the wrench, and the support rod and spring 1 provide a buffering effect for the positioning plate 1, thereby improving the tightness of the connection, avoiding excessive compression that affects the calibration, and enhancing the stability of the calibration.

[0014] 2. Check the shape of the wrench as needed, start the second electric push rod to push the limit sleeve to move, so that the limit sleeve is close to the end of the wrench, and limit the wrench again. By utilizing the elasticity of the second spring, push the second positioning plate inside the limit sleeve to contact the end of the wrench to position the end of the wrench. The second spring and the card block provide limiting and buffering functions to prevent the second positioning plate from completely separating from the limit sleeve, while preventing excessive extrusion from causing wear on the wrench, thereby improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the three-dimensional structure of a calibration device for a torque wrench proposed by the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of a calibration device for a torque wrench proposed in the present invention;

[0017] Figure 3 This is a schematic diagram of the split structure of the positioning plate and the buffer plate of a calibration device for a torque wrench proposed by the present invention;

[0018] Figure 4 This is a schematic diagram of the split structure of the limiting sleeve and the positioning plate of a calibration device for a torque wrench proposed by the present invention;

[0019] Figure 5 This is a schematic diagram of the support plate and groove frame structure of a torque wrench calibration device proposed by the present invention;

[0020] In the figure: 1. Base plate; 101. Fixed rod; 102. Electric slide rail; 103. Groove frame; 104. Support rod; 105. Connecting block; 106. Buffer plate; 2. Verification table; 201. Mounting frame 1; 202. Electric push rod 1; 203. Positioning plate 1; 3. Mounting frame 2; 301. Electric push rod 2; 302. Limit sleeve; 303. Spring 1; 4. Detection head; 5. Motor; 6. Positioning plate 2; 7. Spring 2; 8. Block; 801. Screw block; 802. Support plate; 803. Screw. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figure 1-Figure 5 A calibration device for a torque wrench comprises a base plate 1, a calibration table 2 and a mounting frame 3. A detection head body 4 is mounted on the upper end of the calibration table 2 through fasteners. A mounting frame 201 is provided on one side of the detection head body 4. A connecting block 105 is movably provided on the mounting frame 201. A positioning plate 203 is provided below the connecting block 105. A buffer plate 106 is provided between the upper end of the positioning plate 203 and the connecting block 105. A support rod 104 is movably mounted on the buffer plate 106. The top end of the support rod 104 passes through the buffer plate 106, and the other end of the support rod 104 is fixedly connected to the positioning plate 203. An electric push rod 301 is mounted on the mounting frame 3 through fasteners. A limiting sleeve 302 is fixedly provided at one end of the electric push rod 301. A positioning plate 6 is movably provided inside the limiting sleeve 302. A spring 7 is fixedly installed between the positioning plate 6 and the inner wall of the limiting sleeve 302.

[0025] When in use, first, the staff places the other end of the wrench to be checked on the support plate 802, and after supporting the wrench through the fixing rod 101 and the support plate 802, starts the electric slide rail 102, so that the groove frame 103 above drives the support plate 802 to slide, driving the head of the wrench to approach the calibration table 2, turns on the motor 5, and the motor 5 drives the screw 803 to rotate through the output shaft, and the screw block 801 drives the upper support plate 802 to move, and adjusts the position of the wrench again so that the head of the wrench is accurately connected with the detection head body 4. Finally, the electric push rod 202 is started, and the electric push rod 202 pushes the connecting block 105 to move downward, and the connecting block 105 drives the positioning plate 203 to move downward to contact the calibration wrench head, limiting the upper end of the wrench, and the support rod 104 and the spring 303 provide a buffer for the positioning plate 203, thereby improving the tightness of the connection, avoiding excessive compression to affect the calibration, and enhancing the stability of the calibration.

[0026] In this embodiment, the connecting block 105 is fixedly connected to the top of the buffer plate 106, and the two ends of the connecting block 105 are slidably connected to the inner wall of the mounting frame 201. The outer part of the support rod 104 is sleeved with a spring 303, and the two ends of the spring 303 are respectively fixedly connected to the buffer plate 106 and the top of the positioning plate 203.

[0027] When in use, the shape of the wrench is checked as needed, and the electric push rod 2 301 is started to push the limiting sleeve 302 to move, so that the limiting sleeve 302 is close to the end of the wrench and the wrench is limited again. By utilizing the elasticity of the spring 2 7, the positioning plate 2 6 inside the limiting sleeve 302 is pushed to contact the end of the wrench to position the end of the wrench. The spring 2 7 and the block 8 provide limiting and buffering functions to prevent the positioning plate 2 6 from completely separating from the limiting sleeve 302, while preventing excessive extrusion from causing wear of the wrench, thereby improving the flexibility of use.

[0028] In this embodiment, an electric push rod 202 is installed on the upper end of the mounting frame 201 through fasteners, and the bottom end of the electric push rod 202 is fixedly connected to the connecting block 105. The support rods 104 are symmetrically distributed on the positioning plate 203, and the positioning plate 203 is located above the detection head body 4.

[0029] During use, when the positioning plate 203 moves downward to contact the calibration wrench, the support rod 104 and the spring 303 are movable and retracted, so that the positioning plate 203 accurately limits the upper end of the wrench, while avoiding excessive compression of the positioning plate 203.

[0030] In this embodiment, an electric slide rail 102 is installed on the upper end of the base plate 1 through fasteners. A groove frame 103 is movably installed on the electric slide rail 102. A screw rod 803 is installed inside the groove frame 103, and a screw block 801 is provided on the screw rod 803.

[0031] When in use, the model of the electric slide rail 102 is TOPRIG S60. The electric slide rail 102 drives the groove frame 103 to slide, thereby pushing the head of the wrench closer to the calibration table 2, which is convenient for calibration and positioning according to different wrenches.

[0032] In this embodiment, the screw block 801 is threadedly connected to the screw rod 803, one end of the screw rod 803 is installed with a motor 5, the motor 5 is fixedly connected to one end of the screw rod 803 through an output shaft, and the other end of the screw rod 803 is connected to the inner wall of the groove frame 103 through a rotating shaft, and a clamping block 8 is provided at the upper end of the limit sleeve 302.

[0033] When in use, the model of the motor 5 is JSMA-PUC02D. By driving the upper support plate 802 to shift, the position of the wrench can be adjusted again, so that the head of the wrench is accurately connected to the detection head body 4, thereby enhancing the flexibility of the calibration.

[0034] In this embodiment, a fixing rod 101 is fixedly installed on the upper end of the screw block 801, and a support plate 802 is installed on the fixing rod 101 through a fastener. The bottom end of the block 8 is fixedly connected to the positioning plate 2 6, and the block 8 is slidably connected to the inner wall of the limiting sleeve 302.

[0035] During use, when spring 2 7 pushes positioning plate 2 6 to contact the end of the wrench, it also drives the block 8 to move in the slot on the limit sleeve 302. The block 8 limits the positioning plate 2 6 to prevent it from separating from the limit sleeve 302. At the same time, spring 2 7 has a buffering effect to prevent the wrench from being over-tightened.

[0036] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: first, the staff places the other end of the wrench to be checked on the support plate 802, and after supporting the wrench through the fixing rod 101 and the support plate 802, starts the electric slide rail 102, so that the upper groove frame 103 drives the support plate 802 to slide, and drives the head of the wrench to approach the inspection table 2, turns on the motor 5, and the motor 5 drives the screw 803 to rotate through the output shaft, and the screw block 801 drives the upper support plate 802 to move, and adjusts the position of the wrench again so that the head of the wrench is accurately connected with the detection head body 4, and finally starts the electric push rod 202, and the electric push rod 202 pushes the connecting block 105 to move downward, and the connecting block 105 drives the positioning plate 2 03 moves down to contact and check the head of the wrench to limit the upper end of the wrench, then the support rod 104 and the spring 1 303 provide a buffering effect for the positioning plate 1 203, thereby improving the tightness of the connection, and avoiding excessive compression affecting the calibration, thereby enhancing the stability of the calibration, and calibrating the shape of the wrench as needed, and starting the electric push rod 2 301 to push the limiting sleeve 302 to move, so that the limiting sleeve 302 is close to the end of the wrench, and the wrench is limited again, and by utilizing the elasticity of the spring 2 7, the positioning plate 2 6 inside the limiting sleeve 302 is pushed to contact the end of the wrench to position the end of the wrench, then the spring 2 7 and the block 8 provide a limiting and buffering effect, thereby avoiding the positioning plate 2 6 from completely separating from the limiting sleeve 302, and at the same time preventing excessive extrusion from causing wear of the wrench, thereby improving the flexibility of use.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A calibration device for a torque wrench, comprising a base plate (1), a calibration table (2) and a second mounting frame (3), characterized in that: The upper end of the calibration table (2) is mounted with a detection head body (4) via fasteners, a mounting frame (201) is provided on one side of the detection head body (4), a connecting block (105) is movably provided on the mounting frame (201), a positioning plate (203) is provided below the connecting block (105), a buffer plate (106) is provided between the upper end of the positioning plate (203) and the connecting block (105), a support rod (104) is movably mounted on the buffer plate (106), and the support rod ( The top end of the support rod (104) is connected to the buffer plate (106), the other end of the support rod (104) is fixedly connected to the positioning plate (203), and the electric push rod (301) is installed on the mounting frame (3) through a fastener. A limiting sleeve (302) is fixedly provided at one end of the electric push rod (301), and a positioning plate (6) is movably provided inside the limiting sleeve (302), and a spring (7) is fixedly installed between the positioning plate (6) and the inner wall of the limiting sleeve (302).

2. A calibration device for a torque wrench according to claim 1, characterized in that: The connecting block (105) is fixedly connected to the top of the buffer plate (106), and the two ends of the connecting block (105) are slidably connected to the inner wall of the mounting frame (201). The outer portion of the support rod (104) is sleeved with a spring (303), and the two ends of the spring (303) are respectively fixedly connected to the buffer plate (106) and the top of the positioning plate (203).

3. A calibration device for a torque wrench according to claim 1, characterized in that: An electric push rod (202) is mounted on the upper end of the mounting frame (201) via a fastener, and the bottom end of the electric push rod (202) is fixedly connected to the connecting block (105). The support rods (104) are symmetrically distributed on the positioning plate (203), and the positioning plate (203) is located above the detection head (4).

4. A calibration device for a torque wrench according to claim 1, characterized in that: An electric slide rail (102) is mounted on the upper end of the base plate (1) via a fastener, a groove frame (103) is movably mounted on the electric slide rail (102), a screw rod (803) is mounted inside the groove frame (103), and a screw block (801) is provided on the screw rod (803).

5. A calibration device for a torque wrench according to claim 4, characterized in that: The screw block (801) is threadedly connected to the screw rod (803), one end of the screw rod (803) is installed with a motor (5), the motor (5) is fixedly connected to one end of the screw rod (803) via an output shaft, the other end of the screw rod (803) is connected to the inner wall of the groove frame (103) via a rotating shaft, and a clamping block (8) is provided at the upper end of the limiting sleeve (302).

6. A calibration device for a torque wrench according to claim 5, characterized in that: The upper end of the screw block (801) is fixedly mounted with a fixing rod (101), and a support plate (802) is mounted on the fixing rod (101) via a fastener. The bottom end of the clamping block (8) is fixedly connected to the second positioning plate (6), and the clamping block (8) is slidably connected to the inner wall of the limiting sleeve (302).

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