Length detection device for metering detection

Abstract

The utility model relates to the technical field of length measurement, in particular to a length detection device for metering detection, which comprises a protective groove and a shaft lever, and the two ends of the shaft lever are rotatably connected with the inner wall of one side of the protective groove; one end of the outer measuring scale is fixedly connected with the shaft rod, a cavity is formed in the outer measuring scale, an extension measuring mechanism is installed on the outer measuring scale, and the extension measuring mechanism can extend outwards or contract inwards along the outer measuring scale; the clamping block is fixedly connected with the extension measuring mechanism, and the clamping block is provided with a bayonet; and the clamping mechanism is installed on the protection groove, and the clamping mechanism can enter a bayonet formed in the clamping block and is used for maintaining the protection state of the protection groove for the external measuring ruler and the extension measuring mechanism. The length detection device for measurement and detection provided by the utility model not only can detect the length of a workpiece, but also can protect the measuring scale, prevent the measuring scale from being affected by damp or dust, can be extended or shortened according to actual requirements, and is simple to operate and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of length measurement, in particular to a length detection device for metrological detection. Background Art

[0002] When detecting the length of a workpiece, a length detection device is needed. The use of the length detection device facilitates the rapid length measurement of the workpiece, so as to obtain the size information of the workpiece, facilitate the subsequent processing of the workpiece, and ensure the stability of the subsequent use of the workpiece.

[0003] Although the existing length detection devices can measure the length of workpieces, there are still some problems. First, the existing length detection devices fail to protect the measuring ruler, resulting in the measuring ruler being easily affected by moisture or dust. Second, the existing detection devices cannot be extended or shortened according to actual detection requirements. Therefore, a length detection device for metrological detection is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the embodiment of the utility model is to provide a length detection device for metrological detection, aiming to solve the following problems: the existing length detection devices cannot protect the measuring ruler and cannot be extended or shortened according to actual detection requirements.

[0005] The embodiment of the utility model is implemented as follows. A length detection device for metrological detection includes: a protective groove and a shaft rod, and both ends of the shaft rod are rotatably connected to the inner wall of one side of the protective groove; an outer measuring ruler, one end of which is fixedly connected to the shaft rod and is provided with a cavity, and an extension measuring mechanism is installed on the outer measuring ruler. The extension measuring mechanism can extend outward or contract inward along the outer measuring ruler for measuring the length of a longer object; a clamping block, which is fixedly connected to the extension measuring mechanism, and the clamping block is provided with a clamping opening; a clamping mechanism, which is installed on the protective groove, and the clamping mechanism can enter the clamping opening opened by the clamping block to maintain the protective state of the protective groove for the outer measuring ruler and the extension measuring mechanism.

[0006] Preferably, the extension measuring mechanism includes: an inner measuring ruler, which is slidably arranged on the outer measuring ruler. One end of the inner measuring ruler arranged in the cavity opened by the outer measuring ruler is fixedly connected with a limiting plate, and one end of the inner measuring ruler arranged outside the cavity opened by the outer measuring ruler is fixedly connected with the clamping block; a close-fitting component, which is installed in the cavity opened by the outer measuring ruler, and the inner measuring ruler passes through the close-fitting component. The close-fitting component can be close-fitted to the inner measuring ruler to increase the resistance of the inner measuring ruler to extend outward or contract inward.

[0007] Preferably, the pressing component includes: a linkage rod, two of which are provided, and the mutually remote ends are fixedly connected to the inner wall of the cavity opened in the outer measuring scale. The mutually approaching ends of the two linkage rods are fixedly connected with a baffle. A linkage block is sleeved on the linkage rod, and a push spring for pushing the linkage block to slide along the linkage rod is fixedly connected between the linkage block and the baffle; a hinge rod, one end of which is hinged to the linkage block, and the other ends of the two hinge rods are hinged to a pressing plate, and the pressing plate can be pressed against the inner measuring scale to increase the resistance of the inner measuring scale to extend outwards or contract inwards; a guide post, one end of which is fixedly connected to the inner wall of the cavity and multiple are provided, and a guide sleeve fixedly connected to the pressing plate is sleeved on the multiple guide posts.

[0008] Preferably, the clamping mechanism includes: a sleeve fixedly connected to the inner wall of the protective groove, a sleeve rod slidably arranged on the sleeve, and an inclined block fixedly arranged on the sleeve rod; a compression spring, the two ends of which are respectively fixedly connected to the sleeve and the inclined block, and is used to push the inclined block into the bayonet opened in the clamping block; a pull rod, one end of which is fixedly connected to the inclined block and the other end is arranged outside the protective groove, and a pull handle is fixedly connected to the end of the pull rod arranged outside the protective groove.

[0009] Preferably, it further includes: a rubber plug, which is arranged in cooperation with the protective groove and is used to control the opening and closing of the protective groove. A sealing plate is fixedly installed on the rubber plug, and a handle for conveniently putting the rubber plug into or taking it out of the protective groove is fixedly arranged on the sealing plate.

[0010] The length detection device for metrological detection provided by the present utility model can not only detect the length of a workpiece, but also protect the measuring scale, avoid the interference of moisture or dust on the measuring scale, and can be extended or shortened according to actual needs at the same time. It has simple operation and strong practicability. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the length detection device for metrological detection.

[0012] Figure 2 It is a schematic diagram of the clamping mechanism of the length detection device for metrological detection.

[0013] Figure 3 It is a schematic diagram of the extended measurement mechanism of the length detection device for metrological detection.

[0014] Figure 4 It is a schematic diagram of the pressing component of the length detection device for metrological detection.

[0015] In the accompanying drawings: 1 - protective groove, 2 - shaft rod, 3 - external measuring scale, 4 - extending measuring mechanism, 5 - clamping block, 6 - clamping mechanism, 41 - internal measuring scale, 42 - limiting plate, 43 - pressing component, 431 - linkage rod, 432 - baffle plate, 433 - linkage block, 434 - pushing spring, 435 - hinge rod, 436 - pressing plate, 437 - guide post, 438 - guide sleeve, 61 - sleeve, 62 - sleeve rod, 63 - inclined block, 64 - compression spring, 65 - pull rod, 66 - pull handle, 7 - rubber plug, 8 - sealing plate, 9 - handle. Detailed implementation mode

[0016] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further elaborates on the present utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and do not limit the present utility model.

[0017] The following describes in detail the specific implementation of the present utility model in combination with specific embodiments.

[0018] Please refer to Figure 1 and Figure 2 , a length detection device for metrological detection provided by an embodiment of the present utility model, the length detection device for metrological detection includes:

[0019] A protective groove 1 and a shaft rod 2, both ends of the shaft rod 2 are rotatably connected to the inner wall of one side of the protective groove 1; an external measuring scale 3, one end of which is fixedly connected to the shaft rod 2 and is provided with a cavity, an extending measuring mechanism 4 is installed on the external measuring scale 3, and the extending measuring mechanism 4 can extend outward or contract inward along the external measuring scale 3 for measuring the length of a longer object; a clamping block 5, which is fixedly connected to the extending measuring mechanism 4, and the clamping block 5 is provided with a clamping opening; a clamping mechanism 6, which is installed on the protective groove 1, and the clamping mechanism 6 can enter the clamping opening opened by the clamping block 5 to maintain the protective state of the protective groove 1 for the external measuring scale 3 and the extending measuring mechanism 4.

[0020] When using this length detection device for metrological detection, first pull the control end of the clamping mechanism 6. After the clamping mechanism 6 disengages from the clamping groove opened in the clamping block 5, pull the outer measuring ruler 3. The outer measuring ruler 3 drives the shaft rod 2 to rotate in the protection groove 1. At this time, the outer measuring ruler 3 can be used to measure the length of the bow. If the length of the workpiece is too long, the extended measuring mechanism 4 can be pulled. After the extended measuring mechanism 4 is completely pulled out from the outer measuring ruler 3, the outer measuring ruler 3 and the extended measuring mechanism 4 are used together to measure the workpiece. The extended measuring mechanism 4 has a certain resistance when moving along the outer measuring ruler 3, so that the extended measuring mechanism 4 can maintain the extended length. After the measurement is completed, the outer measuring ruler 3 and the extended measuring mechanism 4 are retracted into the protection groove 1, and the clamping mechanism 6 can enter the clamping block 5, thereby fixing the outer measuring ruler 3 and the extended measuring mechanism 4 in the protection groove 1.

[0021] As Figure 3 shown, as a preferred embodiment of the present invention, the extended measuring mechanism 4 includes: an inner measuring ruler 41, which is slidably arranged on the outer measuring ruler 3. One end of the inner measuring ruler 41 arranged in the cavity opened in the outer measuring ruler 3 is fixedly connected with a limiting plate 42, and one end of the inner measuring ruler 41 arranged outside the cavity opened in the outer measuring ruler 3 is fixedly connected with the clamping block 5; a close-fitting component 43, which is installed in the cavity opened in the outer measuring ruler 3. The inner measuring ruler 41 passes through the close-fitting component 43, and the close-fitting component 43 can be close-fitted to the inner measuring ruler 41 to increase the resistance of the inner measuring ruler 41 to extend outward or contract inward.

[0022] As Figure 4 shown, as a preferred embodiment of the present invention, the close-fitting component 43 includes: two linkage rods 431, the mutually remote ends of which are fixedly connected with the inner wall of the cavity opened in the outer measuring ruler 3. The mutually close ends of the two linkage rods 431 are fixedly connected with a baffle plate 432. A linkage block 433 is sleeved on the linkage rod 431. A push spring 434 for pushing the linkage block 433 to slide along the linkage rod 431 is fixedly connected between the linkage block 433 and the baffle plate 432; a hinged rod 435, one end of which is hinged to the linkage block 433. The other ends of the two hinged rods 435 are hinged with a close-fitting plate 436. The close-fitting plate 436 can be close-fitted to the inner measuring ruler 41 to increase the resistance of the inner measuring ruler 41 to extend outward or contract inward; a guide post 437, one end of which is fixedly connected with the inner wall of the cavity and there are multiple guide posts 437. A guide sleeve 438 fixedly connected with the close-fitting plate 436 is sleeved on the multiple guide posts 437.

[0023] When measuring a workpiece with a relatively long length, the inner measuring ruler 41 is pulled, and the inner measuring ruler 41 drives the limit plate 42 to slide outward along the outer measuring ruler 3. During this process, due to the elastic force of the push spring 434, the linkage blocks 433 on both sides tend to move away from each other along the linkage rod 431, so that the articulated rod 435 can drive the pressing plate 436 to press the inner measuring ruler 41, thereby increasing the friction force of the inner measuring ruler 41 sliding along the limit plate 42, and the inner measuring ruler 41 can maintain the adjusted position.

[0024] As Figure 2 shown, as a preferred embodiment of the present invention, the clamping mechanism 6 includes: a sleeve 61, which is fixedly connected to the inner wall of the protective groove 1, and a sleeve rod 62 is slidably arranged on the sleeve 61, and an inclined block 63 is fixedly arranged on the sleeve rod 62; a compression spring 64, the two ends of which are respectively fixedly connected to the sleeve 61 and the inclined block 63, and is used to push the inclined block 63 into the clamping opening opened by the clamping block 5; a pull rod 65, one end of which is fixedly connected to the inclined block 63, and the other end is arranged outside the protective groove 1, and a pull handle 66 is fixedly connected to the end of the pull rod 65 arranged outside the protective groove 1.

[0025] When taking out the outer measuring ruler 3 for use, pull the pull handle 66, the pull handle 66 drives the inclined block 63 and the sleeve rod 62 to slide along the sleeve 61 through the pull rod 65 and compress the compression spring 64. After the inclined block 63 disengages from the clamping opening opened by the clamping block 5, the outer measuring ruler 3 can be pulled, so that the outer measuring ruler 3 can be taken out of the protective groove 1 for measurement.

[0026] As Figure 1 shown, as a preferred embodiment of the present invention, it further includes: a rubber plug 7, which is arranged in cooperation with the protective groove 1 and is used to control the opening and closing of the protective groove 1. A sealing plate 8 is fixedly installed on the rubber plug 7, and a handle 9 for conveniently putting the rubber plug 7 into or taking it out of the protective groove 1 is fixedly arranged on the sealing plate 8.

[0027] Before using the device, the handle 9 can be pulled, and the handle 9 drives the rubber plug 7 to move out of the protective groove 1 through the sealing plate 8, so as to facilitate the use of the outer measuring ruler 3. The rubber plug 7 can close the protective groove 1 to prevent the outer measuring ruler 3 from being affected by moisture or dust.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A length detection device for metrology detection, comprising a protective groove and a shaft rod, characterized in that: The two ends of the shaft rod are rotatably connected to the inner wall of one side of the protective groove; An outer measuring ruler, one end of which is fixedly connected to the shaft and has a cavity, and an extension measuring mechanism is installed on the outer measuring ruler, which can extend outward or retract inward along the outer measuring ruler, and is used to measure the length of a long object; A snap-in block, which is fixedly connected to the extension measuring mechanism, and the snap-in block is provided with a snap-in opening; The clamping mechanism is installed on the protection groove. The clamping mechanism can enter the clamping port opened by the clamping block to maintain the protection state of the protection groove to the external measuring ruler and the extended measuring mechanism.

2. The length detection device for measurement detection according to claim 1, characterized in that: The extension measurement mechanism comprises: The inner measuring ruler is slidably arranged on the outer measuring ruler, one end of the inner measuring ruler arranged in the cavity opened by the outer measuring ruler is fixedly connected to the limit plate, and the other end of the inner measuring ruler arranged outside the cavity opened by the outer measuring ruler is fixedly connected to the snap-in block; The close-fitting assembly is installed in the cavity opened by the outer measuring ruler. The inner measuring ruler passes through the close-fitting assembly. The close-fitting assembly can close the inner measuring ruler to increase the resistance of the inner measuring ruler to extend outward or contract inward.

3. The length detection device for measurement detection according to claim 2, characterized in that: The clamping component comprises: A linkage rod is provided with two ends which are far from each other and fixedly connected to the inner wall of the cavity opened by the outer measuring ruler, and the ends of the two linkage rods which are close to each other are fixedly connected to a baffle, a linkage block is sleeved on the linkage rod, and a push spring is fixedly connected between the linkage block and the baffle for pushing the linkage block to slide along the linkage rod; A hinged rod, one end of which is hinged to the linkage block, and the other ends of the hinged rods on both sides are hinged to a close plate, which can close to the inner measuring ruler to increase the resistance of the inner measuring ruler to extend outward or contract inward; A guide post, one end of which is fixedly connected to the inner wall of the cavity, is provided in plurality, and a guide sleeve fixedly connected to the abutting plate is sleeved on the plurality of guide posts.

4. The length detection device for measurement detection according to claim 1, characterized in that: The clamping mechanism comprises: A sleeve, which is fixedly connected to the inner wall of the protection groove, a sleeve rod is slidably arranged on the sleeve, and an inclined block is fixedly arranged on the sleeve rod; A compression spring, the two ends of which are respectively fixedly connected to the sleeve and the inclined block, and are used to push the inclined block into the bayonet opening provided by the snap-in block; One end of the pull rod is fixedly connected to the inclined block, and the other end is arranged outside the protective groove. The end of the pull rod arranged outside the protective groove is fixedly connected with a pull handle.

5. The length detection device for measurement detection according to claim 1, characterized in that: Also includes: The rubber plug is arranged in cooperation with the protection groove and is used to control the opening and closing of the protection groove. A sealing plate is fixedly installed on the rubber plug, and a handle is fixedly arranged on the sealing plate for facilitating the rubber plug to be placed in or taken out of the protection groove.

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