Chain length measuring device

Abstract

The utility model relates to the technical field of chain production, in particular to a chain length measuring device. The chain length measuring device comprises a base, a fixing assembly, a straightening assembly and a length measuring unit. The fixing assembly comprises a first connecting seat and a second connecting seat, the first connecting seat is fixedly connected with the base, the second connecting seat is movably connected with the base in the preset direction, and the first connecting seat and the second connecting seat are arranged at an interval in the preset direction; the first connecting seat and the second connecting seat are respectively used for connecting two ends of a to-be-tested chain; the straightening assembly is connected with the base and used for driving the second connecting base and the chain connected to the second connecting base to move in the preset direction so as to straighten the chain. The length measuring unit is connected with the base, the fixing assembly or the straightening assembly, and the length measuring unit is used for detecting the length of the chain in the straightening state. The chain length measuring device is simple in structure and convenient to measure, and can improve the chain length measuring precision of the chain, so that the delivery quality of the chain can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain production technical field, specifically, a chain length measuring device. BACKGROUND

[0002] In recent years, with the continuous upgrading and improvement of industrial production, various new equipment emerge in an endless stream, and customers have higher and higher requirements on the quality and chain length precision of the chain, and when the chain length precision of the chain is low, it is extremely easy to appear the situation that it cannot be normally assembled into the equipment, thereby seriously affecting the use of the equipment.

[0003] And the existing measurement mode is to fix one end of the chain with a steel wire, straighten the chain, and paste the end with a straight iron block, and measure with a steel tape, since the total length of the chain is long, it is difficult to straighten, and the middle section is easy to bend, which affects the matching result, and because the force of each person is different, the steel wire will also be bent and deformed after long time use, therefore, measurement error is easy to appear, and the chain length precision of the chain is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a chain length measuring device, which has simple structure, convenient measurement, and can improve the chain length measurement precision of the chain, thereby improving the delivery quality of the chain.

[0005] The embodiment of the utility model can be realized as follows:

[0006] The utility model provides a chain length measuring device, and the chain length measuring device comprises a base, a fixing assembly, a straightening assembly and a length measuring unit.

[0007] The fixing assembly comprises a first connecting seat and a second connecting seat, the first connecting seat is fixedly connected with the base, the second connecting seat is movably connected with the base along a preset direction, and the first connecting seat and the second connecting seat are arranged at intervals along the preset direction; the first connecting seat and the second connecting seat are respectively used for connecting two ends of the chain to be measured;

[0008] The straightening assembly is connected with the base, and the straightening assembly is used for driving the second connecting seat and the chain connected with the second connecting seat to move along the preset direction, so as to straighten the chain;

[0009] The length measuring unit is connected with the base, the fixing assembly or the straightening assembly, and the length measuring unit is used for detecting the length of the chain in the straightened state.

[0010] In the optional implementation, the length measuring unit comprises a laser ranging main body and a laser ranging reflector plate, one of the laser ranging main body and the laser ranging reflector plate is connected with the first connecting seat, and the other is connected with the second connecting seat;

[0011] The laser ranging main body is configured to emit ranging light towards the laser ranging reflector to measure the distance between the two.

[0012] In an optional embodiment, the base is provided with a first sliding slot extending along the preset direction, and the second connecting seat is slidably connected with the first sliding slot.

[0013] In an optional embodiment, the first connecting seat and the second connecting seat are both connected with a clamp for connecting with the chain.

[0014] In an optional embodiment, the straightening assembly comprises a straightening cylinder body connected with the base, and a movable end of the straightening cylinder body is connected with the second connecting seat, and the straightening cylinder body is configured to drive the second connecting seat to move along the preset direction.

[0015] In an optional embodiment, the base is provided with a second sliding slot extending along the preset direction, and the straightening cylinder body is connected with the second sliding slot.

[0016] In an optional embodiment, the straightening assembly further comprises a tension sensor configured to detect the straightening stress received by the chain.

[0017] In an optional embodiment, the tension sensor is arranged at a connection between the straightening cylinder body and the second connecting seat, or at a connection between the second connecting seat and the chain.

[0018] In an optional embodiment, the straightening assembly further comprises a connecting rod, two ends of the connecting rod are respectively connected with the second connecting seat and the straightening cylinder body.

[0019] In an optional embodiment, the connecting rod comprises a first segment connected with the straightening cylinder body and a second segment connected with the second connecting seat, the first segment is connected with the second segment, and the tension sensor is arranged at a connection between the first segment and the second segment.

[0020] The chain length measuring device has the following advantages:

[0021] The chain length measuring device comprises a base, a fixing assembly, a straightening assembly and a length measuring unit; the fixing assembly comprises a first connecting seat and a second connecting seat, the first connecting seat is fixedly connected with the base, the second connecting seat is movably connected with the base along a preset direction, and the first connecting seat and the second connecting seat are arranged at intervals along the preset direction; the first connecting seat and the second connecting seat are respectively used for connecting two ends of the chain to be measured; the straightening assembly is connected with the base, and is used for driving the second connecting seat and the chain connected with the second connecting seat to move along the preset direction, so as to straighten the chain; the length measuring unit is connected with the base, the fixing assembly or the straightening assembly, and is used for detecting the length of the chain in the straightened state. The chain length measuring device has simple structure, convenient measurement, and can improve the chain length measurement precision of the chain, thereby improving the delivery quality of the chain. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 The structure diagram of the chain length measuring device provided in the present embodiment.

[0024] Figure: 100-chain length measuring device; 110-base; 120-fixing assembly; 130-straightening assembly; 140-length measuring unit; 121-first connecting seat; 122-second connecting seat; 141-laser ranging main body; 142-laser ranging reflector; 111-first sliding groove; 131-straightening cylinder; 132-tension sensor; 133-connecting rod; 134-first segment; 135-second segment. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0027] It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the application product when it is usually placed, it is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0029] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] It should be noted that the features in the embodiments of the application can be combined with each other without conflict.

[0031] Please refer to Figure 1 The embodiment provides a chain length measuring device 100, which comprises a base 110, a fixing assembly 120, a straightening assembly 130 and a length measuring unit 140.

[0032] The fixing assembly 120 comprises a first connecting seat 121 and a second connecting seat 122, the first connecting seat 121 is fixedly connected with the base 110, the second connecting seat 122 is movably connected with the base 110 along a preset direction, and the first connecting seat 121 and the second connecting seat 122 are spaced apart along the preset direction; the first connecting seat 121 and the second connecting seat 122 are respectively used for connecting two ends of the chain to be measured;

[0033] The straightening assembly 130 is connected with the base 110, and the straightening assembly 130 is used for driving the second connecting seat 122 and the chain connected with the second connecting seat 122 to move along the preset direction, so as to straighten the chain;

[0034] The length measuring unit 140 is connected with the base 110, the fixing assembly 120 or the straightening assembly 130, and the length measuring unit 140 is used for detecting the length of the chain in the straightened state.

[0035] Please refer to Figure 1 The working principle of the chain length measuring device 100 is as follows:

[0036] The chain length measuring device 100 comprises a base 110, a fixing assembly 120, a straightening assembly 130, and a length measuring unit 140. The fixing assembly 120 comprises a first connecting seat 121 and a second connecting seat 122. The first connecting seat 121 is fixedly connected with the base 110, and the second connecting seat 122 is movably connected with the base 110 along a preset direction. The first connecting seat 121 and the second connecting seat 122 are spaced apart along the preset direction. The first connecting seat 121 and the second connecting seat 122 are respectively used for connecting two ends of a chain to be measured.

[0037] Thus, through the above structure, the second connecting seat 122 can be driven by the straightening assembly 130 to move relative to the base 110 along the preset direction during use, so as to increase the interval between the first connecting seat 121 and the second connecting seat 122. Then, the chain connected with the first connecting seat 121 and the second connecting seat 122 can be moved and straightened under the condition that the interval between the first connecting seat 121 and the second connecting seat 122 is increased. Then, the length of the chain in the straightened state can be detected by the length measuring unit 140.

[0038] The above measurement method can conveniently connect the first connecting seat 121 and the second connecting seat 122 with the two ends of the chain, so as to simplify the operation steps of the length measuring process. Moreover, the movement of the straightening assembly 130 can drive the second connecting seat 122 and the chain connected with the second connecting seat 122 to move along the preset direction, so as to provide sufficient straightening stress. Compared with the manual straightening method in the prior art, the method can provide greater straightening stress and ensure the length measurement of the chain in the straightened state, thereby reducing the labor intensity of the workers.

[0039] In summary, through the above structure, the length measurement of the chain can be performed in the straightened state. Based on this, the part of the chain in the curved state can be avoided, so as to improve the length measurement accuracy. Moreover, the overall structure can be automatically performed by a mechanical structure, so as to reduce the labor intensity of the workers and improve the length measurement efficiency. Furthermore, the chain length measurement accuracy can be improved, and the delivery quality of the chain can be improved.

[0040] Further, please refer to Figure 1In the embodiment, in order to improve the length measurement accuracy of the length measurement unit 140, the length measurement unit 140 comprises a laser ranging main body 141 and a laser ranging reflector 142, one of the laser ranging main body 141 and the laser ranging reflector 142 is connected with the first connecting seat 121, and the other is connected with the second connecting seat 122; wherein the laser ranging main body 141 is used for emitting ranging light to the laser ranging reflector 142 to measure the distance between the two.

[0041] The measurement principle is that the laser diode of the laser ranging main body 141 emits a laser pulse to the laser ranging reflector 142 of the target; the reflected laser light is scattered in all directions, and part of the scattered light returns to the receiver of the laser ranging main body 141 and is imaged onto the avalanche photodiode after being received by the optical system; the avalanche photodiode is an optical sensor with amplification function, so it can detect extremely weak light signals, record and process the time experienced from the emission of the light pulse to the return of the receiver, and thus the target distance can be measured.

[0042] It should be noted that such a setting mode is based on the distance between the laser ranging main body 141 and the laser ranging reflector 142 to calculate the length, and in the measurement process, the length of the chain can be calculated based on the distance between the laser ranging main body 141 and the laser ranging reflector 142 before and after the measurement, so as to improve the measurement accuracy.

[0043] In the measurement process, under the driving action of the straightening assembly 130, the second connecting seat 122 slides relative to the base 110 in a predetermined direction, in order to improve the movement stability of the second connecting seat 122 and avoid deviation during movement, the base 110 is provided with a first sliding groove 111 extending in a predetermined direction, and the second connecting seat 122 is slidably connected with the first sliding groove 111, so that the movement of the second connecting seat 122 can be guided by the first sliding groove 111, thereby improving the measurement accuracy.

[0044] In use, in order to improve the connection stability of the first connecting seat 121 and the second connecting seat 122, the first connecting seat 121 and the second connecting seat 122 are connected with clamps for connecting with the chain; it should be noted that the purpose of such a setting mode is to facilitate the replacement of corresponding clamps during length measurement, so as to adapt to the length measurement requirements of chains of different types or size parameters.

[0045] Further, please refer to Figure 1In the embodiment, when the straightening assembly 130 is configured, it drives the second connecting seat 122 to move relative to the base 110 to straighten the chain connected to the first connecting seat 121 and the second connecting seat 122. In this process, in order to avoid the situation that the chain is partially bent, the straightening assembly 130 needs to provide sufficient straightening stress. Therefore, the embodiment adopts a straightening assembly 130 including a straightening cylinder 131. The straightening cylinder 131 is connected with the base 110, and the movable end of the straightening cylinder 131 is connected with the second connecting seat 122. The straightening cylinder 131 is used to drive the second connecting seat 122 to move along a preset direction. Thus, the straightening cylinder 131 can provide sufficient straightening stress to drive the second connecting seat 122 to move, thereby straightening the chain. It should be noted that when the straightening cylinder 131 is configured, it can be configured as a hydraulic cylinder or an air cylinder based on actual needs.

[0046] Further, please refer to Figure 1 In the embodiment, in order to enable the device to adapt to the length measurement requirements of chains of different lengths, when the base 110 is configured, the base 110 is configured with a second sliding groove extending along a preset direction. The straightening cylinder 131 is connected with the second sliding groove. Through such a setting mode, the position of the straightening cylinder 131 can be adjusted to change the maximum measurement length, thereby expanding the measurable range.

[0047] On the basis of the above structure, in order to avoid the situation that the straightening stress of the straightening cylinder 131 loaded on the chain is too large to cause damage to the chain, the straightening assembly 130 further includes a tension sensor 132. The tension sensor 132 is used to detect the straightening stress of the chain. In this way, the external force acting on the chain by the straightening cylinder 131 can be avoided to be too large, thereby playing a protective role for the chain during length measurement.

[0048] Specifically, when the tension sensor 132 is configured, it can be configured at the connection between the straightening cylinder 131 and the second connecting seat 122, or at the connection between the second connecting seat 122 and the chain, that is, the external force acting on the chain can be detected by detecting the direct force between the straightening cylinder 131 and the second connecting seat 122 or the direct force between the second connecting seat 122 and the chain.

[0049] On the basis of the above structure, in order to adapt to the length measurement requirements of chains of different lengths, the straightening assembly 130 can further include a connecting rod 133 extending along a preset direction. The two ends of the connecting rod 133 are respectively connected with the second connecting seat 122 and the straightening cylinder 131. The purpose of such a setting mode is that the connecting rod 133 can play a role of transmitting tension, and the measurable length can be adjusted by adjusting the length of the connecting rod 133.

[0050] In addition, on the basis of being provided with the connecting rod 133, the tension sensor 132 can also be connected to the connecting rod 133, specifically, the connecting rod 133 comprises a first segment 134 and a second segment 135, the first segment 134 is connected with the straightening cylinder body 131, the second segment 135 is connected with the second connecting seat 122, the first segment 134 is connected with the second segment 135, and the tension sensor 132 is arranged at the connecting position of the first segment 134 and the second segment 135.

[0051] Please refer to Figure 1 The measuring steps of the chain length measuring device 100 are as follows:

[0052] The two ends of the chain are clamped on the clamps of the first connecting seat 121 and the second connecting seat 122, under the condition that the working states of other structures are determined to be normal, the straightening cylinder body 131 is started, the chain is subjected to load straightening, the load reading of the tension sensor 132 is read, whether the required load for measurement is reached is observed, the length reading of the laser distance measuring main body 141 is read after the load reaches the requirement, and the actual chain length data is obtained based on the reading of the initial position or minus the tool length, so as to measure the length of the chain. It should be noted that the length reading of the laser distance measuring main body 141 read after the load reaches the requirement needs to be converted to obtain the length of the chain, the conversion method and the converted length value need to be determined according to the actual situation.

[0053] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1.A chain length measuring device, characterized in that: the chain length measuring device comprises a base, a fixing assembly, a straightening assembly and a length measuring unit; the fixing assembly comprises a first connecting seat and a second connecting seat, the first connecting seat is fixedly connected with the base, the second connecting seat is movably connected with the base along a preset direction, and the first connecting seat and the second connecting seat are spaced apart along the preset direction; the first connecting seat and the second connecting seat are respectively used for connecting two ends of a chain to be measured; the straightening assembly is connected with the base, and is used for driving the second connecting seat and the chain connected with the second connecting seat to move along the preset direction, so as to straighten the chain; the length measuring unit is connected with the base, the fixing assembly or the straightening assembly, and is used for detecting the length of the chain in a straightened state. 2.A chain length measuring device according to claim 1, characterized in that: the length measuring unit comprises a laser ranging main body and a laser ranging reflector, one of the laser ranging main body and the laser ranging reflector is connected with the first connecting seat, and the other is connected with the second connecting seat; wherein, the laser ranging main body is used for emitting ranging light towards the laser ranging reflector to measure the distance therebetween. 3.A chain length measuring device according to claim 1, characterized in that: the base is provided with a first sliding groove, the first sliding groove extends along the preset direction, and the second connecting seat is slidably connected with the first sliding groove. 4.A chain length measuring device according to claim 1, characterized in that: the first connecting seat and the second connecting seat are both connected with clamps used for connecting with the chain. 5.A chain length measuring device according to any one of claims 1-4, characterized in that: the straightening assembly comprises a straightening cylinder, the straightening cylinder is connected with the base, and a movable end of the straightening cylinder is connected with the second connecting seat, the straightening cylinder is used for driving the second connecting seat to move along the preset direction. 6.A chain length measuring device according to claim 5, characterized in that: the base is provided with a second sliding groove, the second sliding groove extends along the preset direction, and the straightening cylinder is connected with the second sliding groove. 7.A chain length measuring device according to claim 5, characterized in that: the straightening assembly further comprises a tension sensor, the tension sensor is used for detecting the straightening stress received by the chain. 8.A chain length measuring device according to claim 7, characterized in that: the tension sensor is arranged at the connection between the straightening cylinder and the second connecting seat, or at the connection between the second connecting seat and the chain. 9.A chain length measuring device according to claim 7, characterized in that: the straightening assembly further comprises a connecting rod, two ends of the connecting rod are respectively connected with the second connecting seat and the straightening cylinder. 10.A chain length measuring device according to claim 9, characterized in that: The connecting rod comprises a first segment and a second segment, the first segment is connected with the straightening cylinder, the second segment is connected with the second connecting seat, the first segment is connected with the second segment, and the tension sensor is arranged at the connection between the first segment and the second segment.

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