Chain length measuring device

Abstract

The embodiment of the utility model provides a chain length measuring device, and relates to the technical field of chain detection. The chain length measuring device comprises a measuring platform, a length measuring assembly, a loading device and a chain connecting assembly, a fixed end block is arranged on the measuring platform, the length measuring assembly and the loading device are both slidably arranged on the measuring platform, and the loading device is connected with the length measuring assembly; the chain connecting assembly comprises a first chain connecting piece, a second chain connecting piece and a zero calibration connecting piece, and the first chain connecting piece is connected with the loading device; when the loading device is located at the zero calibration station, the zero calibration connecting piece is connected with the fixed end block and the first chain connecting piece at the same time; when the loading device is located at a length measuring station, the second chain connecting piece is connected with the fixed end block and one end of the chain at the same time, and the first chain connecting piece is connected with the other end of the chain; the loading device is used for simultaneously driving the length measuring assembly and the first chain connecting piece to move. The measuring efficiency and the measuring accuracy of the chain length can be improved.

Description

TECHNICAL FIELD

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

[0002] In the production process of chain, length measurement needs to be carried out to ensure that the length of each chain is within the specified tolerance range, ensure the precision and consistency of the product, and ensure the subsequent assembly quality and use performance to improve customer satisfaction.

[0003] At present, for the length measurement operation of chain, the length measuring device is usually dragged after the to-be-measured chain is loaded. However, the measurement efficiency of this measurement method is low, and the measured value has error and low precision. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a chain length measuring device which can improve the measurement efficiency and precision of chain length.

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

[0006] In the first aspect, the utility model provides a chain length measuring device, which comprises:

[0007] A measuring platform is provided with a fixed end block;

[0008] A length measuring assembly is slidably arranged on the measuring platform;

[0009] A loading device is slidably arranged on the measuring platform and has a zero calibration station and a length measuring station, and the loading device is connected with the length measuring assembly; and

[0010] A chain connecting assembly comprises a first chain connecting piece, a second chain connecting piece and a zero calibration connecting piece, the first chain connecting piece is connected with the loading device; the zero calibration connecting piece is used for connecting the fixed end block and the first chain connecting piece at the same time when the loading device is in the zero calibration station; the second chain connecting piece is used for connecting the fixed end block and one end of the chain at the same time when the loading device is in the length measuring station, and the first chain connecting piece is used for connecting the other end of the chain;

[0011] The loading device is used for driving the length measuring assembly and the first chain connecting piece to move at the same time, and the loading force is applied to the first chain connecting piece, and the length measuring assembly is used for measuring the position of the first chain connecting piece; the size of the second chain connecting piece is the same as that of the zero calibration connecting piece.

[0012] In an optional embodiment, the zero calibration connector is provided with a mounting groove for mounting the chain connecting end of the first chain connector;

[0013] The chain length measuring device further comprises a connecting pin for connecting and fixing the chain connecting end and the zero calibration connector when the chain connecting end is arranged in the mounting groove.

[0014] In an optional embodiment, the chain length measuring device further comprises a first pin for connecting and fixing the zero calibration connector and the fixed end block, or for connecting and fixing the second chain connector and the fixed end block; and / or,

[0015] The chain length measuring device further comprises a second pin for connecting the first chain connector and the loading device.

[0016] In an optional embodiment, the measuring platform is provided with a first sliding rail, the length measuring assembly comprises a first sliding block and a length measuring member, the first sliding block is slidably connected to the first sliding rail and connected to the loading device, and the length measuring member is connected to the first sliding block and used for measuring the position of the first sliding block or the first chain connector.

[0017] In an optional embodiment, the length measuring member comprises an inductor and a grating ruler, the inductor is connected to the first sliding block, and the grating ruler is arranged on the measuring platform and cooperates with the inductor.

[0018] In an optional embodiment, the measuring platform is provided with a second sliding rail, the loading device comprises a second sliding block, a moving plate, a motor and a transmission mechanism, the second sliding block is slidably connected to the second sliding rail, the moving plate is connected to the second sliding block, the motor and the transmission mechanism are arranged on the moving plate, the motor is in transmission connection with the transmission mechanism, and the transmission mechanism is simultaneously connected to the length measuring assembly and the first chain connector.

[0019] In an optional embodiment, the moving plate is provided with a third sliding rail, the transmission mechanism comprises a gear, a rack and a third sliding block, the gear is in transmission connection with the motor, the rack is in transmission connection with the gear, the third sliding block is arranged on the rack and slidably cooperates with the third sliding rail, and the length measuring assembly and the first chain connector are both connected to the rack.

[0020] In an optional embodiment, the chain length measuring device further comprises a proximity switch, the proximity switch is arranged on the moving plate and located on the side of the rack away from the first chain connector.

[0021] In an optional embodiment, the loading device further comprises a sensor connecting member and a tension sensor, the sensor connecting member, the tension sensor and the transmission mechanism are sequentially connected, and the length measuring assembly and the first chain connecting member are connected with the sensor connecting member.

[0022] In an optional embodiment, the loading device further comprises an anchoring block, the anchoring block is connected with the moving plate and located on a side of the moving plate away from the first chain connecting member, the measuring platform is provided with a plurality of pin holes, the plurality of pin holes are arranged at intervals, the chain length measuring device further comprises a third pin, the third pin is used for cooperating with any one of the pin holes to fix the anchoring block on the measuring platform, and / or,

[0023] The loading device further comprises a push-pull handle, and the push-pull handle is arranged on the moving plate, and / or,

[0024] The chain length measuring device further comprises a control box, the control box is arranged on the moving plate and is electrically connected with the motor and the length measuring assembly.

[0025] The beneficial effects of the embodiments of the utility model include:

[0026] The chain length measuring device comprises a measuring platform, a length measuring assembly, a loading device and a chain connecting assembly, the measuring platform is provided with a fixed end block, the length measuring assembly is slidably arranged on the measuring platform, the loading device is slidably arranged on the measuring platform and has a zero calibration station and a length measuring station, and the loading device is connected with the length measuring assembly; the chain connecting assembly comprises a first chain connecting member, a second chain connecting member and a zero calibration connecting member, the first chain connecting member is connected with the loading device; the zero calibration connecting member is used for being connected with the fixed end block and the first chain connecting member simultaneously when the loading device is at the zero calibration station; the second chain connecting member is used for being connected with the fixed end block and one end of the chain simultaneously when the loading device is at the length measuring station, and the first chain connecting member is used for being connected with the other end of the chain; wherein the loading device is used for driving the length measuring assembly and the first chain connecting member to move simultaneously and applying a loading force to the first chain connecting member, and the length measuring assembly is used for measuring the position of the first chain connecting member; the size of the second chain connecting member is same as the size of the zero calibration connecting member.

[0027] When the chain length measuring device is used to measure the length of the chain, a zero calibration operation needs to be performed first, and then a length measuring operation is performed, and the two operations need to be connected with the fixed end block using the zero calibration connecting piece and the second chain connecting piece respectively. Specifically, when the zero calibration operation is performed, the loading device is first slid to the zero calibration station on the measuring platform, and then the fixed end block, the zero calibration connecting piece and the first chain connecting piece are connected in sequence, then the loading device is started to drive the length measuring assembly and the first chain connecting piece to move at the same time, and a predetermined load is applied. At this time, the length measuring assembly records the position information of the first chain connecting piece, which is the starting point value of the chain length measurement. When the length measuring operation is performed, the zero calibration connecting piece needs to be removed and replaced with the second chain connecting piece, that is, the second chain connecting piece is connected with the fixed end block, and the two ends of the chain are fixed through the second chain connecting piece and the first chain connecting piece; then the loading device is slid to the length measuring station on the measuring platform, and the loading device is also started to drive the length measuring assembly and the first chain connecting piece to move at the same time, and the same predetermined load is applied to load the chain. At this time, the length measuring assembly records the position information of the first chain connecting piece, which is the end point value of the chain length measurement. The calculation value obtained by subtracting the starting point value from the end point value is the length of the chain under the predetermined load.

[0028] That is, the chain length measuring device can perform length measurement on the chain during loading, can improve the measurement efficiency, and has a zero calibration operation before measurement, and can obtain the full-size length of the chain at one time, thereby reducing the measurement error and improving the measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme 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 on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 The structure diagram of the chain length measuring device provided by the embodiments of the present application;

[0031] Figure 2 The first perspective view of the loading device in the zero calibration station provided by the embodiments of the present application;

[0032] Figure 3 The second perspective view of the loading device in the zero calibration station provided by the embodiments of the present application;

[0033] Figure 4 The first perspective view of the loading device in the length measuring station provided by the embodiments of the present application;

[0034] Figure 5 A schematic view of the loading device at the second perspective of the length measuring station is provided for the embodiments of the present application.

[0035] Figure 6 A schematic view of the connection between the fixed end block, the zero calibration connecting part and the first chain connecting part is provided for the embodiments of the present application.

[0036] Figure 7 A partial structure schematic view of the loading device at the zero calibration station is provided for the embodiments of the present application.

[0037] Figure 8 A partial structure schematic view of the loading device at the length measuring station is provided for the embodiments of the present application.

[0038] Icon: 100 - chain length measuring device; 10 - measuring platform; 11 - fixed end block; 12 - first sliding rail; 13 - second sliding rail; 14 - pin hole; 15 - drag chain groove; 20 - length measuring assembly; 21 - first sliding block; 22 - length measuring part; 221 - inductor; 222 - grating ruler; 30 - loading device; 31 - second sliding block; 32 - moving plate; 321 - third sliding rail; 33 - motor; 34 - transmission mechanism; 341 - gear; 342 - rack; 343 - third sliding block; 35 - sensor connecting part; 36 - tension sensor; 37 - anchoring block; 38 - push-pull handle; 40 - chain connecting assembly; 41 - first chain connecting part; 441 - chain connecting end; 42 - second chain connecting part; 43 - zero calibration connecting part; 431 - mounting groove; 51 - connecting pin; 52 - first bolt; 53 - second bolt; 54 - third bolt; 60 - proximity switch; 70 - control box; 80 - drag chain; 200 - chain. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings 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 of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that like reference numerals and letters refer to like items in the several views, and that no further definitions and explanations of a certain item are required in the subsequent drawings once the item has been defined in one drawing.

[0042] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, or the directions or position relations in which the utility model product is usually placed during use, which are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are merely used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0044] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0045] As described in the background, during the production process of the chain, length measurement is required to ensure that the length of each chain is within the specified tolerance range, to ensure the accuracy and consistency of the product, and to ensure the subsequent assembly quality and use performance, so as to improve customer satisfaction. The existing chain length measurement operation is usually to load the chain to be measured first, and then drag the length measuring device to measure the length. However, this measurement method has low measurement efficiency, and the measured value has errors and low precision.

[0046] Based on this, please refer to Figures 1-8 The embodiment of the utility model provides a chain length measuring device 100, which can effectively improve the above-mentioned technical problems, that is, it can improve the measurement efficiency and measurement accuracy of the chain length. The chain length measuring device 100 will be described in detail below.

[0047] Please refer toFigure 1 , Figure 1 The structural schematic diagram of the chain length measuring device 100 provided in the embodiment is shown in FIG. 1, which is combined with Figure 1 The chain length measuring device 100 comprises a measuring platform 10, a length measuring assembly 20, a loading device 30 and a chain connecting assembly 40. The measuring platform 10 is provided with a fixed end block 11. The length measuring assembly 20 is slidably arranged on the measuring platform 10. The loading device 30 is slidably arranged on the measuring platform 10 and has a zero calibration station and a length measuring station. The loading device 30 is connected with the length measuring assembly 20.

[0048] Specifically, please refer to Figures 2-5 , Figure 2 The first perspective view of the loading device 30 in the zero calibration station is shown in FIG. 2. Figure 3 The second perspective view of the loading device 30 in the zero calibration station is shown in FIG. 3. Figure 4 The first perspective view of the loading device 30 in the length measuring station is shown in FIG. 4. Figure 5 The second perspective view of the loading device 30 in the length measuring station is shown in FIG. 5, which is combined with Figures 1-5 The chain connecting assembly 40 comprises a first chain connecting piece 41, a second chain connecting piece 42 and a zero calibration connecting piece 43. The first chain connecting piece 41 is connected with the loading device 30. The zero calibration connecting piece 43 is used to be connected with the fixed end block 11 and the first chain connecting piece 41 simultaneously when the loading device 30 is in the zero calibration station. The second chain connecting piece 42 is used to be connected with the fixed end block 11 and one end of the chain 200 simultaneously when the loading device 30 is in the length measuring station, and the first chain connecting piece 41 is used to be connected with the other end of the chain 200. The loading device 30 is used to drive the length measuring assembly 20 and the first chain connecting piece 41 to move simultaneously and to apply a loading force to the first chain connecting piece 41. The length measuring assembly 20 is used to measure the position of the first chain connecting piece 41. The size of the second chain connecting piece 42 is the same as that of the zero calibration connecting piece 43.

[0049] In the process of measuring the length of the chain 200 by using the chain length measuring device 100, the zero calibration operation needs to be performed first, and then the length measurement operation is performed, and the two operations need to be connected with the fixed end block 11 by using the zero calibration connecting piece 43 and the second chain connecting piece 42 respectively. Specifically, when performing the zero calibration operation, first, the loading device 30 is slid to the zero calibration work station on the measuring platform 10, and then the fixed end block 11, the zero calibration connecting piece 43 and the first chain connecting piece 41 are connected in sequence, and then the loading device 30 is started to drive the length measuring assembly 20 and the first chain connecting piece 41 to move at the same time, and a predetermined load is applied. At this time, the length measuring assembly 20 records the position information of the first chain connecting piece 41, which is the starting point value of the length measurement of the chain 200. When performing the length measurement operation, the zero calibration connecting piece 43 needs to be removed and replaced with the second chain connecting piece 42, that is, the second chain connecting piece 42 is connected with the fixed end block 11, and the two ends of the chain 200 are fixed through the second chain connecting piece 42 and the first chain connecting piece 41. Then, the loading device 30 is slid to the length measurement work station on the measuring platform 10, and the loading device 30 is also started to drive the length measuring assembly 20 and the first chain connecting piece 41 to move at the same time, and the same predetermined load is applied to the chain 200. At this time, the length measuring assembly 20 records the position information of the first chain connecting piece 41, which is the end point value of the length measurement of the chain 200. The calculation value obtained by subtracting the starting point value from the end point value is the length of the chain 200 under the predetermined load.

[0050] That is, the chain length measuring device 100 can perform the length measurement operation on the chain 200 during loading, which can improve the measurement efficiency, and has the zero calibration operation before measurement, and can obtain the full-size length of the chain 200 at one time, thereby reducing the measurement error and improving the measurement accuracy.

[0051] It should be noted that the size of the second chain connecting piece 42 mentioned in the above content is the same as that of the zero calibration connecting piece 43, which can be understood as that the lengths of the two are the same, or the connection positions of the two with the fixed end block 11 and the first chain connecting piece 41 remain unchanged when the two are replaced. The purpose of the setting here is to ensure that the measurement starting point position recorded by the length measuring assembly 20 after the zero calibration operation is completed is the same as the position after the second chain connecting piece 42 is connected with the fixed end block 11, thereby ensuring that the chain 200 is installed and fixed at the zero calibration position or the measurement starting point position, so as to ensure the measurement accuracy in subsequent calculation.

[0052] In addition, it should be noted that the purpose of replacing the zero calibration connecting member 43 and the second chain connecting member 42 at different operations in the present application is that the first chain connecting member 41 and the second chain connecting member 42 need to be connected with both ends of the chain 200, that is, the end portions of both have the same special structure matched with both ends of the chain 200. If the second chain connecting member 42 is directly used to connect with the first chain connecting member 41 during the zero calibration operation, the end portions of both need to be changed, which will affect the subsequent connection and matching with both ends of the chain 200. Therefore, the present application creatively provides the zero calibration connecting member 43, which is connected with the first chain connecting member 41 during the zero calibration operation, and is replaced by the second chain connecting member 42 to match and fix the chain 200 with the first chain connecting member 41 during the length measurement operation, so as to better realize the fastening of the chain 200 and further ensure the stability and accuracy of the measurement.

[0053] Specifically, please refer to Figure 6 , Figure 6 The connection schematic diagram between the fixed end block 11, the zero calibration connecting member 43 and the first chain connecting member 41 provided for the present embodiment is shown in Figure 6 The zero calibration connecting member 43 is provided with a mounting groove 431 for mounting the chain connecting end 441 of the first chain connecting member 41; the chain length measurement device 100 further comprises a connecting pin 51 for connecting and fixing the chain connecting end 441 with the zero calibration connecting member 43 in the case that the chain connecting end 441 is arranged in the mounting groove 431. It can be understood that by arranging the connecting pin 51 and the mounting groove 431, the zero calibration connecting member 43 and the first chain connecting member 41 can be conveniently mounted and dismounted, and the measurement efficiency is improved.

[0054] Please continue to combine Figures 1-5 In order to facilitate the mounting and dismounting of the zero calibration connecting member 43 and the second chain connecting member 42 with the fixed end block 11, in the present embodiment, the chain length measurement device 100 further comprises a first bolt 52 for connecting and fixing the zero calibration connecting member 43 with the fixed end block 11, or the first bolt 52 is used to connect and fix the second chain connecting member 42 with the fixed end block 11.

[0055] Similarly, in order to facilitate the mounting and dismounting of the first chain connecting member 41 with the loading device 30, in the present embodiment, the chain length measurement device 100 further comprises a second bolt 53 for connecting the first chain connecting member 41 with the loading device 30.

[0056] Please combine Figure 2 and Figure 4Specifically, the first slide rail 12 is arranged on the measuring platform 10, the length measuring assembly 20 comprises a first slide block 21 and a length measuring element 22, the first slide block 21 is slidably connected to the first slide rail 12 and connected with the loading device 30, and the length measuring element 22 is connected with the first slide block 21 and used for measuring the position of the first slide block 21 or the first chain connecting element 41.

[0057] It should be noted that, since the first slide block 21 and the first chain connecting element 41 are both moved when the loading device 30 is driven, the length measuring element 22 can selectively record the position of the first slide block 21 or the position of the first chain connecting element 41.

[0058] In this embodiment, specifically, the length measuring element 22 comprises an inductor 221 and a grating ruler 222, the inductor 221 is connected with the first slide block 21, and the grating ruler 222 is arranged on the measuring platform 10 and cooperates with the inductor 221. That is, under the driving of the loading device 30, the inductor 221 also moves with the first slide block 21, that is, moves relative to the grating ruler 222, when the zero calibration operation is performed, when the force applied by the loading device 30 reaches the preset loading force, the value on the grating ruler 222 can be read by the inductor 221, and the value is the starting value or the zero calibration value; and when the length measuring operation is performed, when the force applied by the loading device 30 reaches the preset loading force, the value on the grating ruler 222 can be read by the inductor 221, and the value is the ending value or the length measuring value. Then the difference between the length measuring value and the zero calibration value is calculated, which is the length value of the chain 200 under the preset loading force.

[0059] Alternatively, the inductor 221 can be a magnetic sensor or an optical sensor, and the corresponding grating ruler 222 can be a magnetic grating ruler 222 or an optical grating ruler 222. Of course, in some embodiments, the length measuring element 22 can also be a wire-drawing encoder or other elements that can measure length.

[0060] Further, please refer to Figure 7 and Figure 8 , Figure 7 is a partial structure schematic view of the loading device 30 in the zero calibration position provided in this embodiment, Figure 8 is a partial structure schematic view of the loading device 30 in the length measuring position provided in this embodiment, in combination with Figure 2 , Figure 4 , Figure 7 and Figure 8The second slide rail 13 is arranged on the measuring platform 10, the loading device 30 comprises a second sliding block 31, a moving plate 32, a motor 33 and a transmission mechanism 34, the second sliding block 31 is slidably connected to the second slide rail 13, the moving plate 32 is connected to the second sliding block 31, the motor 33 and the transmission mechanism 34 are arranged on the moving plate 32, the motor 33 is in transmission connection with the transmission mechanism 34, and the transmission mechanism 34 is connected with the length measuring assembly 20 and the first chain connecting piece 41.

[0061] It should be noted that in the embodiment, the first slide rail 12 and the second slide rail 13 are located on the same line, that is, the first slide rail 12 and the second slide rail 13 can be two parts of the same slide rail, and the first slide rail 12 and the second slide rail 13 are connected at this time; of course, they can also be two slide rails with the same sliding direction and located on the same line. Through this arrangement, the sliding stability of the first sliding block 21 and the second sliding block 31 can be ensured, so as to improve the smoothness of the movement of the motor 33 driving the transmission mechanism 34, and drive the first chain connecting piece 41 and the first sliding block 21 to move, and at the same time, the cost can be saved, and only one slide rail needs to be arranged on the measuring platform 10. Of course, in other embodiments, the first slide rail 12 and the second slide rail 13 can also be two different slide rails, and can not be located on the same line.

[0062] Please continue to combine Figure 7 and Figure 8 Specifically, the third slide rail 321 is arranged on the moving plate 32, the transmission mechanism 34 comprises a gear 341, a rack 342 and a third sliding block 343, the gear 341 is in transmission connection with the motor 33, the rack 342 is in transmission connection with the gear 341, the third sliding block 343 is arranged on the rack 342 and is in sliding cooperation with the third slide rail 321; the length measuring assembly 20 and the first chain connecting piece 41 are connected with the rack 342.

[0063] It should be noted that in other embodiments, the transmission mechanism 34 can also be a worm gear transmission, a belt pulley transmission, a ball screw transmission or other transmission modes.

[0064] In addition, in the embodiment, the motor 33 is specifically a servo motor 33, of course, in other embodiments, the motor 33 can also be a torque motor 33, a stepping motor 33 or other types.

[0065] In order to avoid that when the gear 341 and the rack 342 move in cooperation, the distance of the movement of the rack 342 is too large and the rack 342 is disengaged from the gear 341, the chain length measuring device 100 further comprises a proximity switch 60, the proximity switch 60 is arranged on the moving plate 32 and located on the side of the rack 342 away from the first chain connecting piece 41.

[0066] It is easy to understand that the loading force exerted by the loading device 30, in particular, the torque output by the motor 33, and the force exerted by the power transmission mechanism to drive the first chain connecting piece 41 and the first sliding block 21 to move, can be understood as a pulling force, therefore, in order to ensure the effectiveness of the pulling force and ensure that the chain 200 receives the accurate loading force, in the embodiment, the loading device 30 further comprises a sensor connecting piece 35 and a pulling force sensor 36, the sensor connecting piece 35, the pulling force sensor 36 and the transmission mechanism 34 are connected in sequence, and the length measuring assembly 20 and the first chain connecting piece 41 are connected with the sensor connecting piece 35; specifically, in the embodiment, the sensor connecting piece 35 is connected with the first chain connecting piece 41 and the first sliding block 21 at the same time.

[0067] By setting the pulling force sensor 36, it can be detected whether the loading force exerted by the motor 33 reaches the preset value, so as to ensure the measurement accuracy, and by setting the sensor pulling piece, it can be conveniently connected with the length measuring assembly 20 and the first chain connecting piece 41, and it can play a role in protecting the pulling force sensor 36 and ensuring the measurement stability.

[0068] Please continue to combine Figures 1-5 The loading device 30 further comprises an anchoring block 37, which is connected with the moving plate 32 and located on the side of the moving plate 32 away from the first chain connecting piece 41; the measuring platform 10 is provided with a plurality of pin holes 14, which are arranged at intervals; the chain length measuring device 100 further comprises a third pin 54, which is used to cooperate with any one of the pin holes 14 to fix the anchoring block 37 on the measuring platform 10.

[0069] Since the loading device 30 slides on the measuring platform 10, through the cooperation of the anchoring block 37, the third pin 54 and the plurality of pin holes 14, the loading device 30 can be fixed with the measuring platform 10 when it slides to different positions, which improves the measurement stability and efficiency.

[0070] Of course, in order to facilitate the overall movement of the loading device 30, the loading device 30 further comprises a push-pull handle 38, which is arranged on the moving plate 32.

[0071] Further, the chain length measuring device 100 further comprises a control box 70, which is arranged on the moving plate 32 and is electrically connected with the motor 33 and the length measuring assembly 20 at the same time, and the control box 70 is provided with a control panel, a display screen, a button switch and the like, which can facilitate the control of the motor 33 and the length measuring assembly 20 during the measurement process. Specifically, in the embodiment, the control box 70 is electrically connected with the motor 33, the sensor 221, the pulling force sensor 36 and the proximity switch 60 and the like, so as to better exert the pulling force on the chain 200, measure and record the data, and display the measurement results on the display screen.

[0072] In addition, the chain length measuring device 100 further comprises a drag chain plate 80, and the measuring platform 10 is further provided with a drag chain groove 15, and the drag chain plate 80 is arranged in the drag chain groove 15. Through the arrangement of the drag chain plate 80, the transmission lines such as cables, oil pipes and gas pipes in the chain length measuring device 100 can be protected, so that the operation stability and safety of the chain length measuring device 100 are improved; and through the arrangement of the drag chain groove 15, the installation of the drag chain plate 80 is facilitated.

[0073] In conclusion, the embodiment of the utility model provides a kind of chain length measuring device 100, chain length measuring device 100 includes measuring platform 10, length measuring assembly 20, loading device 30 and chain connection assembly 40, and measuring platform 10 is provided with fixed end block 11, length measuring assembly 20 is slidably arranged in measuring platform 10, loading device 30 is slidably arranged in measuring platform 10, and it has zero calibration station and length measuring station, and loading device 30 is connected with length measuring assembly 20;Chain connection assembly 40 includes first chain connecting piece 41, second chain connecting piece 42 and zero calibration connecting piece 43, and first chain connecting piece 41 is connected with loading device 30;Zero calibration connecting piece 43 is used to be connected with fixed end block 11 and first chain connecting piece 41 simultaneously under the condition that loading device 30 is in zero calibration station;Second chain connecting piece 42 is used to be connected with fixed end block 11 and one end of chain 200 simultaneously under the condition that loading device 30 is in length measuring station, and first chain connecting piece 41 is used to be connected with the other end of chain 200;Wherein, loading device 30 is used to drive length measuring assembly 20 and first chain connecting piece 41 move simultaneously, and exert loading force to first chain connecting piece 41, and length measuring assembly 20 is used to measure the position of first chain connecting piece 41;The size of second chain connecting piece 42 is same with the size of zero calibration connecting piece 43.It can be understood that when chain length measuring device 100 is used to measure the length of chain 200, first zero calibration operation is needed, then length measuring operation is carried out, and two operations need to be connected with fixed end block 11 using zero calibration connecting piece 43 and second chain connecting piece 42 respectively.

[0074] Specifically, when the zero calibration operation is performed, the loading device 30 is first slid to the zero calibration station on the measuring platform 10, then the fixed end block 11, the zero calibration connecting piece 43 and the first chain connecting piece 41 are sequentially connected, then the loading device 30 is started to drive the length measuring assembly 20 and the first chain connecting piece 41 to move at the same time, and a preset load is applied, at this time, the length measuring assembly 20 records the position information of the first chain connecting piece 41, that is, the starting point value of the chain 200 length measurement. When the length measurement operation is performed, the zero calibration connecting piece 43 needs to be removed and replaced with the second chain connecting piece 42, that is, the second chain connecting piece 42 is connected with the fixed end block 11, and the two ends of the chain 200 are fixed through the second chain connecting piece 42 and the first chain connecting piece 41; then the loading device 30 is slid to the length measurement station on the measuring platform 10, and the loading device 30 is also driven to move the length measuring assembly 20 and the first chain connecting piece 41 at the same time, and the same preset load is applied to load the chain 200, at this time, the length measuring assembly 20 records the position information of the first chain connecting piece 41, that is, the ending point value of the chain 200 length measurement. The calculation value obtained by subtracting the starting point value from the ending point value is the length of the chain 200 under the preset load.

[0075] Therefore, the chain length measuring device 100 can perform the length measurement operation on the chain 200 during the loading process, can improve the measurement efficiency, and has the zero calibration operation before the measurement, and can obtain the full-size length of the chain 200 at one time, thereby reducing the measurement error and improving the measurement accuracy.

[0076] The above only describes specific embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A chain length measuring device, characterized by, The chain length measuring device (100) comprises: a measuring platform (10) provided with a fixed end block (11); a length measuring assembly (20) slidably arranged on the measuring platform (10); a loading device (30) slidably arranged on the measuring platform (10) and having a zero calibration station and a length measuring station, the loading device (30) being connected with the length measuring assembly (20); and a chain connecting assembly (40) comprising a first chain connecting piece (41), a second chain connecting piece (42) and a zero calibration connecting piece (43), the first chain connecting piece (41) being connected with the loading device (30); the zero calibration connecting piece (43) being used for being connected with the fixed end block (11) and the first chain connecting piece (41) simultaneously when the loading device (30) is at the zero calibration station; the second chain connecting piece (42) being used for being connected with the fixed end block (11) and one end of a chain (200) simultaneously when the loading device (30) is at the length measuring station, and the first chain connecting piece (41) being used for being connected with the other end of the chain (200); wherein the loading device (30) is used for driving the length measuring assembly (20) and the first chain connecting piece (41) to move simultaneously and applying a loading force to the first chain connecting piece (41), and the length measuring assembly (20) is used for measuring the position of the first chain connecting piece (41); the second chain connecting piece (42) has the same size as the zero calibration connecting piece (43).

2. The chain length measuring device of claim 1, wherein, The zero calibration connecting piece (43) is provided with a mounting groove (431) for mounting a chain connecting end (441) of the first chain connecting piece (41); The chain length measuring device (100) further comprises a connecting pin (51) for connecting and fixing the chain connecting end (441) with the zero calibration connecting piece (43) when the chain connecting end (441) is arranged in the mounting groove (431).

3. The chain length measuring device of claim 1, wherein, The chain length measuring device (100) further comprises a first bolt (52) for connecting and fixing the zero calibration connecting piece (43) with the fixed end block (11), or the first bolt (52) is used for connecting and fixing the second chain connecting piece (42) with the fixed end block (11); and / or The chain length measuring device (100) further comprises a second bolt (53) for connecting the first chain connecting piece (41) with the loading device (30).

4. The chain length measuring device of claim 1, wherein, The measuring platform (10) is provided with a first sliding rail (12), the length measuring assembly (20) comprises a first sliding block (21) and a length measuring piece (22), the first sliding block (21) is slidably connected to the first sliding rail (12) and connected with the loading device (30), the length measuring piece (22) is connected with the first sliding block (21) and used for measuring the position of the first sliding block (21) or the first chain connecting piece (41).

5. The chain length measuring device of claim 4, wherein, The length measuring piece (22) comprises an inductor (221) and a grating ruler (222), the inductor (221) is connected with the first sliding block (21), and the grating ruler (222) is arranged on the measuring platform (10) and matched with the inductor (221).

6. The chain length measuring device of claim 1, wherein, The measuring platform (10) is provided with a second sliding rail (13), the loading device (30) comprises a second sliding block (31), a moving plate (32), a motor (33) and a transmission mechanism (34), the second sliding block (31) is slidably connected to the second sliding rail (13), the moving plate (32) is connected with the second sliding block (31), the motor (33) and the transmission mechanism (34) are arranged on the moving plate (32), the motor (33) is in driving connection with the transmission mechanism (34), and the transmission mechanism (34) is connected with the length measuring assembly (20) and the first chain connecting piece (41) simultaneously.

7. The chain length measuring device of claim 6, wherein, The moving plate (32) is provided with a third sliding rail (321), the transmission mechanism (34) comprises a gear (341), a rack (342) and a third sliding block (343), the gear (341) is in driving connection with the motor (33), the rack (342) is in driving connection with the gear (341), the third sliding block (343) is arranged on the rack (342) and slidably matched with the third sliding rail (321), and the length measuring assembly (20) and the first chain connecting piece (41) are connected with the rack (342).

8. The chain length measuring device of claim 7, wherein, The chain length measuring device (100) further comprises a proximity switch (60), the proximity switch (60) is arranged on the moving plate (32) and located on the side of the rack (342) away from the first chain connecting piece (41).

9. The chain length measuring device of claim 6, wherein, The loading device (30) further comprises a sensor connecting piece (35) and a tension sensor (36), the sensor connecting piece (35), the tension sensor (36) and the transmission mechanism (34) are sequentially connected, and the length measuring assembly (20) and the first chain connecting piece (41) are connected with the sensor connecting piece (35).

10. The chain length measuring device of claim 6, wherein, The loading device (30) further comprises an anchoring block (37) connected with the moving plate (32) and located on the side of the moving plate (32) away from the first chain connecting member (41); the measuring platform (10) is provided with a plurality of pin holes (14) arranged at intervals; the chain length measuring device (100) further comprises a third pin (54) used for cooperating with any one of the pin holes (14) to fix the anchoring block (37) to the measuring platform (10); and / or, The loading device (30) further comprises a push-pull handle (38) arranged on the moving plate (32); and / or, The chain length measuring device (100) further comprises a control box (70) arranged on the moving plate (32) and electrically connected with the motor (33) and the length measuring assembly (20) at the same time.

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