Measuring equipment and measuring method

Abstract

The invention discloses measuring equipment and a measuring method, a support in the measuring equipment is provided with a sliding rod, a sliding part is slidably arranged on the sliding rod along the axial direction of the sliding rod, and a measuring instrument arranged on the support can obtain the displacement of the sliding part by measuring the distance of the sliding part relative to the sliding part along the axial direction of the sliding rod. A fixed pulley in the pulley block is arranged on a support, a movable pulley is arranged on a sliding piece, the middle of a traction rope sequentially bypasses the fixed pulley and the movable pulley, one end of the traction rope is a fixed end, the other end of the traction rope is a free end, and the free end is connected with a moving part with the stroke needing to be measured. Movement of a moving part is generally converted into movement of a sliding part through a traction rope and a movable pulley, nonlinear displacement of the moving part can be obtained according to the mapping relation between the stroke of the moving part and axial displacement of the sliding part, large stroke is measured through small stroke in cooperation with a pulley block, and universality is greatly improved. The technical problem that the universality of measuring equipment is not high enough is solved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the technical field of measuring equipment, and in particular, relates to a measuring equipment and a measuring method. Background Art

[0002] Measuring equipment is the measuring instrument, software, metrology standard, standard sample (standard material) or auxiliary equipment or their combination necessary to realize the measurement process, which can be used to measure the performance-related parameters of equipment and tools. Measuring equipment can also measure the travel of moving parts to determine the running accuracy or positioning accuracy of moving parts.

[0003] At present, the measuring equipment used to measure stroke usually includes displacement sensors or distance meters, etc. However, displacement sensors and distance meters, on the one hand, have certain difficulties in measuring non-linear strokes, and on the other hand, for longer strokes, sensors and distance meters are also difficult to install and detect, and the versatility of the measuring equipment is not high enough. Summary of the invention

[0004] The present application aims to at least to some extent solve the technical problem that the universality of the measuring device is not high enough. To this end, the present application provides a measuring device and a measuring method.

[0005] The present application provides a measuring device and a measuring method, including:

[0006] A bracket, provided with a slide bar;

[0007] A sliding member, slidably disposed on the sliding rod along the axial direction of the sliding rod;

[0008] A measuring instrument, arranged on the bracket and used to measure the distance of the sliding member relative to itself along the axial direction of the sliding rod;

[0009] A pulley block, the pulley block comprising a fixed pulley, a movable pulley and a traction rope, the fixed pulley being arranged on the bracket and having an axis with an angle between the axis of the slide bar, the movable pulley being arranged on the slide member, the middle portion of the traction rope passing through the fixed pulley and the movable pulley in sequence, and the two ends being a fixed end and a free end respectively.

[0010] In some or certain embodiments, at least two of the movable pulleys are arranged side by side on the sliding member, and the middle portion of the traction rope passes around at least two of the movable pulleys.

[0011] In some or certain embodiments, the bracket is provided with a mounting portion opposite to the sliding member and for mounting the fixed pulley, the movable pulley is opposite to the fixed pulley, and the measuring device further comprises:

[0012] The resetting elastic member is provided with two ends acting on the sliding member and the mounting portion respectively, and the retracting direction of the resetting elastic member extends along the axial direction of the sliding rod.

[0013] In some or certain embodiments, the support further comprises:

[0014] Two supporting members are arranged side by side, two ends of the sliding rod are respectively fixedly connected to the two supporting members, the measuring instrument and the fixed pulley are respectively arranged on the two supporting members, the sliding member is located between the measuring instrument and the fixed pulley, and the movable pulley is opposite to the fixed pulley.

[0015] In some or certain embodiments, the support further comprises:

[0016] The positioning cylinder is sleeved on the sliding rod and is located between the sliding member and the supporting member provided with the measuring instrument.

[0017] In some or certain embodiments, the measuring device further comprises:

[0018] Two proximity switches are spaced apart along the axial direction of the slide bar and are used to detect the position of the slide member;

[0019] A controller is electrically connected to the measuring instrument and the two proximity switches.

[0020] In some or certain embodiments, the measuring device further comprises:

[0021] A base, wherein the bracket and the proximity switch are both arranged on the base.

[0022] In some or certain embodiments, the measuring device further comprises:

[0023] A protective cover is provided with a protective space for accommodating the bracket, the sliding member and the pulley block, and the free end of the traction rope passes through the protective cover.

[0024] In some or certain embodiments, the measuring device further comprises:

[0025] A cooling component is provided with a cooling end which is connected to or spaced from the protective cover and is used to reduce the temperature of the protective cover.

[0026] The present application also provides a measurement method, which is implemented using the measurement device as described above, and the measurement method includes:

[0027] The free end of the traction rope is fixedly connected to the moving part to be measured;

[0028] causing the moving component to move a set displacement;

[0029] Acquiring a corresponding displacement of the sliding member along the axial direction of the sliding rod after the moving component moves a set displacement;

[0030] The actual displacement of the moving component is determined according to the mapping relationship between the displacement of the sliding member along the axial direction of the sliding rod and the displacement of the moving component.

[0031] Advantageous effects provided by one or more embodiments of the present application:

[0032] The bracket in the measuring equipment is provided with a sliding rod, and the sliding member is slidably arranged on the sliding rod along the axial direction of the sliding rod. The sliding member can move relative to the sliding rod along the axial direction of the sliding rod. A measuring instrument is also arranged on the bracket and is used to measure the distance of the sliding member relative to itself along the axial direction of the sliding rod. When the sliding member moves relative to the sliding rod, the measuring instrument can measure the distance of the sliding member relative to itself along the axial direction of the sliding rod, and measure the distances corresponding to the sliding members at two different points of the moving part. The difference between the two distances is the displacement of the sliding member, which can convert the stroke of the moving part of the equipment that needs to measure the stroke into the axial movement of the sliding member relative to the sliding rod to complete basic stroke detection. The measuring device also includes a pulley block, in which a fixed pulley is arranged on a bracket and an angle is formed between an axis and an axis of the slide rod, a movable pulley is arranged on a sliding member, a middle part of a traction rope passes around the fixed pulley and the movable pulley in sequence, one end of the traction rope is a fixed end, and the other end of the traction rope is a free end, and the free end of the traction rope can be connected to a moving member whose stroke needs to be measured, so that when the moving member moves, the moving member can pull the traction rope to move, and when the traction rope moves, the movable pulley can be rotated and apply a moving force to the movable pulley and the sliding member where the movable pulley is located as a whole, so that the stroke of the moving member can be converted into the displacement of the sliding member along the axial direction of the slide rod through the traction rope. According to the known stroke of the moving member and the axial position of the sliding member The mapping relationship between the displacement and the actual displacement of the moving part can be determined by the corresponding displacement of the sliding part measured by the measuring instrument. The cooperation of the traction rope, the sliding part and the measuring instrument can convert and measure the nonlinear displacement. The middle part of the traction rope bypasses the pulley block. The pulley block is added to save effort. If the winding method of the middle part of the traction rope between the fixed pulley and the movable pulley is changed, the movement of the moving part with a large stroke can be converted into the corresponding displacement of the smaller sliding part, and the small stroke can be used to measure the large stroke. It is also beneficial to improve the versatility of the measuring equipment. The measuring equipment can be applied in many occasions and situations, and the versatility of the measuring equipment is greatly improved, which solves the technical problem of the low versatility of the measuring equipment to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the structure of a measuring device in some embodiments or certain embodiments of the present application is shown.

[0035] Figure 2 A cross-sectional view of a measuring device in some embodiments or certain embodiments of the present application is shown.

[0036] Figure 3 A flow chart of a measurement method in some embodiments or certain embodiments of the present application is shown.

[0037] Explanation of the reference numerals: 1. bracket; 101. slide bar; 102. support member; 103. positioning cylinder; 2. slide member; 3. measuring instrument; 4. pulley block; 401. fixed pulley; 402. movable pulley; 403. traction rope; 4031. free end; 5. reset elastic member; 6. limit rod; 7. base; 8. driving mechanism; 801. driving part; 802. guide rod; 803. bearing frame; 804. screw rod; 9. first proximity switch; 10. second proximity switch; 11. mounting frame; 12. protective cover; 1201. protective space. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] In the related art, the travel of a moving part can be measured by a measuring device including a displacement sensor or a rangefinder, but the displacement sensor and the rangefinder are usually point measurements, and it is difficult to measure the non-linear travel of the moving part. And for moving parts with a long travel, if it is necessary to use a sensor or a rangefinder for measurement, it is necessary to install multiple sensors or rangefinders at different points. The space where the moving part is located may not have space for installing multiple sensors or rangefinders, making it difficult to install and measure multiple sensors or rangefinders, and there is a technical problem that the versatility of the measuring device is not high enough. The embodiment of the present application provides a measuring device and a measuring method, which can at least solve the above technical problems to a certain extent.

[0043] The present application will be described below with reference to the accompanying drawings:

[0044] Figure 1 A schematic diagram of the structure of a measuring device in some embodiments or certain embodiments of the present application is shown. Figure 2 A cross-sectional view of a measuring device in some embodiments or certain embodiments of the present application is shown, with reference to Figure 1 and Figure 2 , the embodiment of the present application provides a measuring device and a measuring method, including:

[0045] The bracket 1 is provided with a sliding rod 101 .

[0046] The sliding member 2 is slidably disposed on the sliding rod 101 along the axial direction of the sliding rod 101 .

[0047] The measuring instrument 3 is disposed on the bracket 1 and is used to measure the distance of the sliding member 2 relative to itself along the axial direction of the sliding rod 101 .

[0048] The pulley block 4 comprises a fixed pulley 401, a movable pulley 402 and a traction rope 403. The fixed pulley 401 is arranged on the bracket 1 and an axis thereof is at an angle with the axis of the slide bar 101. The movable pulley 402 is arranged on the slide member 2. The middle part of the traction rope 403 passes around the fixed pulley 401 and the movable pulley 402 in sequence, and the two ends are a fixed end and a free end 4031 respectively.

[0049] The bracket 1 in the measuring device is provided with a slide bar 101, and the slide member 2 is slidably arranged on the slide bar 101 along the axial direction of the slide bar 101. The slide member 2 can move relative to the slide bar 101 along the axial direction of the slide bar 101. A measuring instrument 3 is also arranged on the bracket 1 and is used to measure the distance of the slide member 2 relative to itself along the axial direction of the slide bar 101. When the slide member 2 moves relative to the slide bar 101, the measuring instrument 3 can measure the distance of the slide member 2 relative to itself along the axial direction of the slide bar 101, and measure the distances corresponding to the slide member 2 at two different points of the moving part. The difference between the two distances is the displacement of the slide member 2, which can convert the stroke of the moving part of the equipment that needs to measure the stroke into the axial movement of the slide member 2 relative to the slide bar 101 to complete basic stroke detection. The measuring device also includes a pulley block 4, in which a fixed pulley 401 is arranged on the bracket 1 and an angle exists between its axis and the axis of the sliding rod 101, and a movable pulley 402 is arranged on the sliding member 2, and the middle part of the traction rope 403 passes around the fixed pulley 401 and the movable pulley 402 in sequence, one end of the traction rope 403 is a fixed end, and the other end of the traction rope 403 is a free end 4031, and the free end 4031 of the traction rope 403 can be connected to a moving part whose stroke needs to be measured. When the moving part moves, the moving part can pull the traction rope 403 to move, and the traction rope 403 can make the movable pulley 402 rotate when moving and apply a moving force to the movable pulley 402 and the sliding member 2 where the movable pulley 402 is located as a whole, so that the stroke of the moving part can be converted into the position of the sliding member 2 along the axial direction of the sliding rod 101 through the traction rope 403. According to the mapping relationship between the stroke of the known moving part and the axial displacement of the sliding part 2, the actual displacement of the moving part can be determined by the corresponding displacement of the sliding part 2 measured by the measuring instrument 3. The cooperation of the traction rope 403, the sliding part 2 and the measuring instrument 3 can convert and measure the nonlinear displacement, and the middle part of the traction rope 403 bypasses the pulley block 4. The pulley block 4 is added to save effort. If the winding method of the middle part of the traction rope 403 between the fixed pulley 401 and the movable pulley 402 is changed, the movement of the moving part with a large stroke can be converted into the corresponding displacement of the smaller sliding part 2, and the small stroke can be used to measure the large stroke. It is also beneficial to improve the versatility of the measuring equipment. The measuring equipment can be applied in many occasions and situations, and the versatility of the measuring equipment is greatly improved, which solves the technical problem of the low versatility of the measuring equipment to a certain extent.

[0050] Moreover, the measuring device in the present application converts the movement stroke of the moving parts of the device to be measured into a small range displacement of the sliding member 2 through the traction rope 403 and the pulley block 4, which also reduces the measurement requirements of the measuring instrument 3, and can use a measuring instrument 3 with a smaller measurement range, and does not need to set up a large number of measuring instruments 3. The overall structure of the measuring device is relatively simple, and does not need to occupy a large space area, which is also conducive to improving the versatility of the measuring device. There is no need to make excessive adjustments to the internal structure of the measuring device, which is also conducive to improving the measurement efficiency of the moving parts to be measured.

[0051] It should be noted that the moving parts involved in the present application can be moving parts with reciprocating movement capability such as piston rods, or can be end transmission parts in a crank-connecting rod mechanism, which can realize the measurement of linear displacement and non-limited displacement. It is also convenient to measure the stroke of reciprocating moving parts. The middle part of the traction rope 403 is the part between the two ends of the traction rope 403, and the fixed end of the traction rope 403 can be fixed to the bracket 1 or the fixed pulley 401 as needed.

[0052] In some or certain embodiments, the bracket 1 is provided with a mounting portion opposite to the sliding member 2 and for mounting the fixed pulley 401, the movable pulley 402 is opposite to the fixed pulley 401, the pulley block 4 is located between the sliding member 2 and the mounting portion, and the measuring device further comprises:

[0053] The resetting elastic member 5 is provided with two ends acting on the sliding member 2 and the mounting portion respectively, and the retracting direction of the resetting elastic member 5 extends along the axial direction of the sliding rod 101 .

[0054] The bracket 1 is provided with a mounting portion opposite to the sliding member 2, and the sliding group is located between the sliding member 2 and the mounting portion, with a high degree of integration, which is conducive to reducing the space required for the entire measuring device. The measuring device also includes a reset elastic member 5 with two ends acting on the sliding member 2 and the mounting portion respectively, and the telescopic direction of the reset elastic member 5 extends along the axial direction of the slide bar 101. When measuring the displacement or stroke of the moving part, when the movement of the moving part is converted into the movement of the sliding member 2, the sliding member 2 can move along the axial direction of the slide bar 101 to compress the reset elastic member 5 until the moving part completes its own movement. After the measuring instrument 3 also obtains complete data, the free end 4031 of the traction rope 403 and the moving part can be separated. The free end 4031 of the traction rope 403 loses restraint. After the sliding member 2 is not subjected to force, the reset elastic member 5 has a natural extension demand, and the two ends of the reset elastic member 5 will apply force to the sliding member 2 and the mounting portion of the bracket 1. The sliding member 2 is pushed by the reset elastic member 5 and can be reset to the position before the measurement starts. It is convenient for the next measurement and reduces the work required for the measurement of the measuring device.

[0055] In some or certain embodiments, at least two movable pulleys 402 are arranged side by side on the sliding member 2 , and the middle portion of the traction rope 403 passes around the at least two movable pulleys 402 .

[0056] The middle part of the traction rope 403 passes through at least two movable pulleys 402, which is convenient for driving the movement of the sliding member 2. When there are at least two movable pulleys 402, the pulley block 4 can be a movable pulley block of n levels according to the winding method of the traction rope 403. The n times of the displacement of the sliding member 2 measured by the measuring instrument 3 is the displacement moved by the traction rope 403, and is also the actual displacement of the moving part connected to the traction rope 403. By the small range displacement movement of the sliding member 2, the large range displacement movement of the moving part is obtained, which is conducive to improving the versatility of the measuring device.

[0057] In some or certain embodiments, the fixed pulley 401 is rotatably disposed on the bracket 1, and the movable pulley 402 is rotatably disposed on the sliding member 2, and the axes of the fixed pulley 401 and the movable pulley 402 can be parallel, and the outer peripheral walls of the fixed pulley 401 and the movable pulley 402 are opposite, and the axes of the fixed pulley 401 and the movable pulley 402 are both skewed and perpendicular to the axis of the slide bar 101. When the movable pulley 402 and the fixed pulley 401 are arranged in this way, when the traction rope 403 passes around the movable pulley 402 and drives the movable pulley 402 to move, the moving efficiency of the movable pulley 402 and the sliding member 2 is high, which is also conducive to improving the measurement efficiency.

[0058] In some or certain embodiments, the fixed pulley 401 and the movable pulley 402 may not be located between the sliding member 2 and the mounting portion, the bracket 1 and the sliding member 2 may also be provided with side portions respectively located on both sides of the radial direction of the sliding rod 101, and the fixed pulley 401 and the movable pulley 402 may also be respectively rolled and arranged on the side portions of the bracket 1 or the sliding member 2. The sliding member 2 may also be pulled.

[0059] In some or certain embodiments, the reset elastic member 5 may be a coil spring or an elastic ring, the axial ends of the coil spring or the elastic ring may respectively abut or be connected to the sliding member 2 and the mounting portion, the fixed pulley 401 and the movable pulley 402 may be located in the through hole formed by the reset elastic member 5 or the through hole corresponding to the inner circumferential wall of the elastic ring, and the traction rope 403 may pass through the through hole and bypass the fixed pulley 401 and the movable pulley 402. This improves the overall integration and helps to ensure the stable movement of the traction rope 403.

[0060] In some or certain embodiments, the bracket 1 further includes at least two limit rods 6 which are parallel to the slide bar 101 and pass through the through hole, one end of each limit rod 6 can be connected to the mounting portion, and the other end of the limit rod 6 can be slidably inserted into the slide 2, and at least two limit rods 6 can be distributed along the circumference of the through hole and contact the hole wall of the through hole. The limit rod 6 can play a guiding and supporting role for the reset elastic member 5, and can make the expansion and contraction direction of the reset elastic member 5 consistent with the axial direction of the slide, reduce the possible deviation of the slide 2, improve the movement accuracy of the slide 2, and improve the displacement accuracy of the moving part that the slide 2 can feedback.

[0061] In some or certain embodiments, the support 1 further comprises:

[0062] Two supporting members 102 are arranged side by side, and both ends of the slide bar 101 are fixedly connected to the two supporting members 102 respectively. The measuring instrument 3 and the fixed pulley 401 are respectively arranged on the two supporting members 102. The slide member 2 is located between the measuring instrument 3 and the fixed pulley 401, and the movable pulley 402 is opposite to the fixed pulley 401.

[0063] It is convenient to realize the assembly of the slide bar 101, the slide member 2, the measuring instrument 3 and the pulley block 4, which can improve the overall integration and reduce the possibility of interference.

[0064] It should be noted that one of the two supporting members 102 can be configured as a mounting portion opposite to the sliding member 2 .

[0065] In some or certain embodiments, the support member 102 may be plate-shaped, the bracket 1 may include two parallel slide bars 101, the two ends of each slide bar 101 may be connected to the two support members 102 respectively, the sliding member 2 may be block-shaped or plate-shaped, and the sliding member 2 may be movably sleeved on the two slide bars 101 along the axial direction of the slide bars 101. A relatively regular shape facilitates the preparation and installation of the measuring device, and the sliding member 2 is sleeved on the two slide bars 101, which is also conducive to controlling the accuracy of the sliding member 2 moving along the axial direction of the slide bars 101.

[0066] In some or certain embodiments, the relative sliding between the sliding member 2 and the sliding rod 101 may also be achieved through a sliding groove and a sliding block, and the length direction of the sliding groove is arranged along the axial direction of the sliding rod 101 .

[0067] In some or certain embodiments, the fixed pulley 401 and the movable pulley 402 may be located between the two slide bars 101, and the free end 4031 of the traction rope 403 passes through between the two slide bars 101 and then passes around the fixed pulley 401 and the movable pulley 402. This is beneficial to reduce interference and improve integration.

[0068] In some or certain embodiments, the support 1 further comprises:

[0069] The positioning cylinder 103 is sleeved on the sliding rod 101 and is located between the sliding member 2 and the supporting member 102 provided with the measuring instrument 3 .

[0070] One end of the positioning cylinder 103 can abut against the sliding member 2 to separate the measuring instrument 3 and the sliding member 2, and to position the sliding member 2 relative to the measuring instrument 3, so as to facilitate the installation of the measuring instrument 3 and also to locate the initial position of the measuring device.

[0071] In some or certain embodiments, in the axial direction of the slide bar 101, the positioning cylinder 103 and the resetting elastic member 5 can be respectively located on both sides of the slide member 2, and each slide bar 101 can be sleeved with a positioning cylinder 103, and the positioning cylinder 103 can be fixedly connected to the slide bar 101 or one end of the positioning cylinder 103 can be fixedly connected to the support member 102. It is convenient for assembly and has a good positioning effect on the slide member 2.

[0072] In some or certain embodiments, the measuring instrument 3 may be located between the two positioning cylinders 103, and the measuring instrument 3 may be a distance sensor, or a distance measuring instrument integrated with distance display data. Alternatively, the measuring instrument 3 may also include a laser sensor connected to the bracket 1, and a reflector matched with the sliding member 2. Both can realize the measurement of the displacement of the sliding member 2.

[0073] In some or certain embodiments, the measuring device further comprises:

[0074] Two proximity switches are spaced apart along the axial direction of the slide bar 101 and are used to detect the position of the slide member 2 .

[0075] The controller (not shown in the figure) is electrically connected to the measuring instrument 3 and the two proximity switches.

[0076] The proximity switches distributed at intervals along the axial direction of the slide bar 101 can detect the position of the slide 2. In cooperation with the controller, when the slide 2 slides to the position of a proximity switch, the proximity switch can send a signal to the controller to obtain the displacement of the measuring instrument 3. When the slide 2 slides to the position corresponding to the next or a certain proximity switch, the corresponding proximity switch can send a signal to the controller to obtain the displacement of the measuring instrument 3. The controller can then obtain the movement displacement of the slide 2 measured by the measuring instrument 3 at the positions of the two proximity switches, which is conducive to improving the automation of the measuring device. Alternatively, the initial position and the limit position of the slide 2 can be determined through the proximity switch, so that the stroke of the slide 2 is within the required range, which can improve the stability of the use of the measuring device. In addition, the addition of the controller and the proximity switch is also conducive to reducing the requirements for the calibration of the initial position of the slide 2. In cooperation with the proximity switch, the displacement of the slide 2 in a first section of the axial direction of the slide bar 101 can be intercepted, and the use of the measuring device is also more flexible.

[0077] In some or certain embodiments, the measuring instrument 3 or the proximity switch can be connected to the bracket 1 or a corresponding position through the mounting bracket 11 to facilitate installation.

[0078] In some or certain embodiments, the measuring device further comprises:

[0079] A base 7 , wherein the bracket 1 and the proximity switch are both arranged on the base 7 .

[0080] The base 7 can increase the integration of the measuring device and is also beneficial to improving the position accuracy of the proximity switch relative to the sliding member 2 .

[0081] In some or certain embodiments, the base 7 may be plate-shaped, the bracket 1 and the proximity switch may be arranged on the plate surface of the base 7, and two proximity switches may be arranged. For the convenience of description, the two proximity switches may be distinguished as a first proximity switch 9 and a second proximity switch 10. The first proximity switch 9 may be used to detect the position where the sliding member 2 abuts against the positioning cylinder 103, and the second proximity switch 10 may be located between the first proximity switch 9 and the bracket 1 provided with the fixed pulley 401. This facilitates the detection of the position of the sliding member 2.

[0082] In some or certain embodiments, the distance between two adjacent proximity switches is adjustable, which makes the use more flexible.

[0083] In some or certain embodiments, the measuring device may further include a driving mechanism 8, which is disposed on the base 7, and the driving mechanism 8 may be provided with a driving portion 801 movable along the axial direction of the slide bar 101, and the driving portion 801 may be connected to the second proximity switch 10. The addition of the driving mechanism 8 may change the distance between the first proximity switch 9 and the second proximity switch 10, and may ensure the relative position accuracy of the first proximity switch 9 and the second proximity switch 10, which is used to adapt to moving parts with different travel ranges, and is also conducive to improving the versatility of the measuring device. In some or certain embodiments, the second proximity switch 10 may be disposed at an extreme position where the slide 2 does not collide with the bracket 1, thereby improving the safety of use.

[0084] In some or certain embodiments, the driving mechanism 8 may be a telescopic cylinder, a motor, or a ball screw driving mechanism, etc. The sliding rod 101 may be moved axially by a piston rod, a motor rod, or a nut seat.

[0085] It should be noted that when the drive mechanism 8 is a ball screw drive mechanism, the nut seat can be configured as a drive part 801, one of the proximity switches can be arranged on the nut seat, or can be connected to the nut seat through the mounting frame 11, and the drive mechanism 8 also includes a guide rod 802 extending along the axial direction of the slide rod 101 and slidingly cooperating with the nut seat. The ball screw 804 drive mechanism 8 can also include two bearing frames 803 spaced apart along the axial direction of the screw rod 804 and both rotatingly cooperating with the screw rod 804, and the two proximity switches can be respectively arranged on the two bearing frames 803 through the corresponding mounting frames 11. Improve the support strength.

[0086] In some or certain embodiments, the measuring device further comprises:

[0087] The protective cover 12 is provided with a protective space 1201 for accommodating the bracket 1 , the sliding member 2 and the pulley block 4 , and the free end 4031 of the traction rope 403 passes through the protective cover 12 .

[0088] The protective space 1201 of the protective cover 12 can enhance the protective effect on the bracket 1, the sliding member 2 and the sliding group, which is beneficial to prolonging the service life of the measuring device.

[0089] In some or certain embodiments, when the measuring device includes a base 7, the protective cover 12 may be disposed on the base 7 to form a protective space 1201 between the protective cover 12 and the base 7. This is beneficial to improving the integration of the measuring device.

[0090] In some or certain embodiments, the traction rope 403 may be a steel wire rope, or a flexible rope with a certain strength, etc.

[0091] In some or certain embodiments, the measuring device further comprises:

[0092] The cooling assembly is provided with a cooling end connected to or spaced from the protective cover 12 and used to reduce the temperature of the protective cover 12, so that the measuring device can be used in a high temperature environment.

[0093] In some or certain embodiments, the cooling assembly may be a water cooling assembly or an air cooling assembly, the water cooling assembly may include a plurality of water cooling pipes passing through the protective cover 12, and the air cooling assembly may include a fan spaced from the protective cover 12 and blowing the protective cover 12, so as to facilitate cooling the protective cover 12.

[0094] In some or certain embodiments, the measuring device may further include a pulley (not shown) located outside the protective cover 12 or a protrusion (not shown) for adjusting the direction of the traction rope 403. This is helpful for adjusting the position of the traction rope 403 outside the protective cover 12 to adapt to more different situations. The pulley and the protrusion may be provided on a device or equipment spaced from the protective cover 12, or may be provided on the base 7, etc.

[0095] Based on the same inventive concept, the present application also provides Figure 3 , Figure 3 A flow chart of a measurement method in some embodiments or certain embodiments of the present application is shown, referring to Figure 3 It can be seen that the present application also provides a measurement method, which is implemented using the measurement device as described above, and the measurement method includes:

[0096] S101: The free end of the traction rope is fixedly connected to the moving part to be measured.

[0097] S102: Move the moving component to a set displacement.

[0098] S103: Acquire the corresponding displacement of the sliding member along the axial direction of the sliding rod after the moving component moves the set displacement.

[0099] S104: determining the actual displacement of the moving component according to the mapping relationship between the displacement of the sliding member along the axial direction of the sliding rod and the displacement of the moving component.

[0100] The structure of the measuring device and its corresponding technical effects can be referred to above, so they will not be described in detail. After obtaining the corresponding displacement of the sliding member moving along the axial direction of the sliding rod, the actual displacement of the moving part is determined according to the mapping relationship between the displacement of the sliding member along the axial direction of the sliding rod and the displacement of the moving part, so as to facilitate the conversion and obtain the displacement of the moving part.

[0101] It should be noted that the measurement of displacement and stroke usually requires comparing the actual data after measurement with the set parameters to determine the relevant performance of the moving parts.

[0102] In step S101 of some or certain embodiments, the free end of the traction rope may be connected to the moving part with the aid of a rope loop, a rope buckle or the like, so as to facilitate pulling the traction rope when the moving part moves.

[0103] In some or certain embodiments, before obtaining the corresponding displacement of the sliding member along the axial direction of the sliding rod after the moving part moves the set displacement, the test method may further include: adjusting the winding mode of the traction rope in the pulley block and the spacing between two adjacent proximity switches, so that after the moving part moves the set displacement, the moving displacement of the sliding member is less than two-thirds of the length of the sliding rod. This makes the use of the measuring device more stable and facilitates the acquisition of subsequent displacement parameters.

[0104] For ease of understanding, the following description is given by taking the first proximity switch and the second proximity switch as examples.

[0105] In step S103 of some or certain embodiments, obtaining the corresponding displacement of the sliding member along the axial direction of the sliding rod after the moving component moves the set displacement may include:

[0106] When the first proximity switch detects the position of the sliding member, the controller receives the signal of the first proximity switch and receives the first distance data of the sliding member measured by the measuring instrument; at the moment when the moving part moves the set displacement, the controller receives the actual distance data of the sliding member measured by the measuring instrument; the corresponding displacement of the sliding member can be obtained by subtracting the first distance data from the actual distance data. The measurement is simple, and this method can reduce the displacement error of the sliding member, which is conducive to improving the stroke measurement accuracy.

[0107] In some or certain embodiments, the mapping relationship between the displacement of the sliding member along the axial movement of the sliding rod and the set displacement of the moving part is a mapping relationship after considering the pulley block. For linear displacement, the displacement of the moving part is the displacement of the free end of the traction rope, and the displacement of the free end of the traction rope can be n times the displacement of the sliding member, where n is the number of strands of the traction rope wound around the movable pulley. Therefore, in linear displacement, the mapping relationship between the displacement of the sliding member along the axial movement of the sliding rod and the displacement of the moving part can be that one-nth of the displacement of the moving part is the displacement of the sliding member. For nonlinear displacement, such as nonlinear displacement of reciprocating motion, the displacement of the sliding member after the moving part moves a certain displacement can be obtained multiple times, and the mapping relationship between the displacement of the moving part and the displacement of the sliding member along the axial direction of the sliding rod can be determined according to the obtained parameters, and then the subsequent measurement conversion is performed according to the obtained standard mapping relationship. For a moving part that performs reciprocating motion and has a nonlinear displacement, the moving part can be made to move for multiple cycles, and the mapping relationship between the displacement of the moving part within one cycle and the axial displacement of the sliding part along the sliding rod can be determined, and then the subsequent displacement conversion measurement is performed according to the obtained mapping relationship.

[0108] It should be noted that the parallelism or perpendicularity involved in the present application is allowed to have a deviation of 0 to 3° relative to the absolute parallelism or absolute perpendicularity in geometry.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0110] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0111] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A measuring device, characterized in that: include: A bracket, provided with a slide bar; A sliding member, slidably disposed on the sliding rod along the axial direction of the sliding rod; A measuring instrument, arranged on the bracket and used to measure the distance of the sliding member relative to itself along the axial direction of the sliding rod; A pulley block, the pulley block comprising a fixed pulley, a movable pulley and a traction rope, the fixed pulley being arranged on the bracket and having an axis with an angle between the axis of the slide bar, the movable pulley being arranged on the slide member, the middle portion of the traction rope passing through the fixed pulley and the movable pulley in sequence, and the two ends being a fixed end and a free end respectively.

2. The measuring device according to claim 1, characterized in that At least two of the movable pulleys are arranged side by side on the sliding member, and the middle portion of the traction rope passes around at least two of the movable pulleys.

3. The measuring device according to claim 1, characterized in that The bracket is provided with a mounting portion opposite to the sliding member and for mounting the fixed pulley, the movable pulley is opposite to the fixed pulley, and the measuring device further comprises: The resetting elastic member is provided with two ends acting on the sliding member and the mounting portion respectively, and the telescopic direction of the resetting elastic member extends along the axial direction of the sliding rod.

4. The measuring device according to any one of claims 1 to 3, characterized in that: The support also includes: Two supporting members are arranged side by side, two ends of the sliding rod are respectively fixedly connected to the two supporting members, the measuring instrument and the fixed pulley are respectively arranged on the two supporting members, the sliding member is located between the measuring instrument and the fixed pulley, and the movable pulley is opposite to the fixed pulley.

5. The measuring device according to claim 4, characterized in that The support also includes: The positioning cylinder is sleeved on the sliding rod and is located between the sliding member and the supporting member provided with the measuring instrument.

6. The measuring device according to any one of claims 1 to 3, characterized in that: The measuring device also includes: Two proximity switches are spaced apart along the axial direction of the slide rod and are used to detect the position of the slide member; A controller is electrically connected to the measuring instrument and the two proximity switches.

7. The measuring device according to claim 6, characterized in that The measuring device also includes: A base, wherein the bracket and the proximity switch are both arranged on the base.

8. The measuring device according to any one of claims 1 to 3, characterized in that: The measuring device also includes: A protective cover is provided with a protective space for accommodating the bracket, the sliding member and the pulley block, and the free end of the traction rope passes through the protective cover.

9. The measuring device according to claim 8, characterized in that The measuring device also includes: A cooling component is provided with a cooling end which is connected to or spaced from the protective cover and is used to reduce the temperature of the protective cover.

10. A measurement method, characterized in that: The measuring method is implemented by using the measuring device according to any one of claims 1 to 9, wherein the measuring method comprises: The free end of the traction rope is fixedly connected to the moving part to be measured; causing the moving component to move a set displacement; Acquiring a corresponding displacement of the sliding member along the axial direction of the sliding rod after the moving component moves a set displacement; The actual displacement of the moving component is determined according to the mapping relationship between the displacement of the sliding member along the axial direction of the sliding rod and the displacement of the moving component.

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