Contact rail measuring device
By designing a contact rail measuring device, which uses rolling wheels and counting components to automatically record the length and quantity of contact rails, the problem of complex and error-prone manual measurement is solved, and fast and accurate contact rail measurement and verification are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA RAILWAY 11TH BUREAU GRP CORP LTD
- Filing Date
- 2025-12-02
- Publication Date
- 2026-04-10
AI Technical Summary
The current contact rail measurement process relies on manual use of steel tape measures, which makes the measurement complex, consumes manpower and resources, and is prone to reading deviations and recording errors, affecting the construction quality.
Design a contact rail measuring device that automatically records the length and quantity of contact rails using a rolling wheel and a counting component, and achieves automatic comparison and verification by combining an encoder and an alarm. Equipped with a cleaning mechanism, it reduces interference factors.
This improves measurement speed and accuracy, ensures the accuracy of contact rail length and connection records, reduces human error, and improves construction quality and efficiency.
Smart Images
Figure CN121829408A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of measuring equipment, and particularly relates to a contact rail measuring device. BACKGROUND
[0002] In the construction of the contact rail project, the area of the construction is first measured, and the measurement results are calculated, including the laying length of the contact rail, the number of laying sections, etc. After the measurement and calculation are completed, the construction is started, and the laying of the contact rail is carried out. After the laying of the contact rail is completed, the laid contact rail needs to be measured, including whether the laying length of the contact rail meets the design requirements, whether the number of laying sections is the same as the design expectation, and whether the connecting pieces are set at the connecting positions of the multiple contact rails according to the requirements. The above factors will all affect the construction quality, and therefore, the measurement after the construction is a very important link. Only under the premise of ensuring the measurement accuracy, the subsequent acceptance and use can be completed.
[0003] At present, all the contact rail measurements are manually carried out by using a steel tape for longitudinal measurement. The longitudinal measurement is to first determine a starting point, and then the steel tape is used to cooperate with a folding rule to measure the contact rail, and the number of sections of the contact rail and whether the connecting pieces are set at the positions between every two adjacent sections of the contact rail according to the requirements are manually recorded. The process is complex, and a large amount of manpower and material resources are consumed, and the manual recording will also cause reading deviation and recording errors. In view of the above problems, the present application provides a contact rail measuring device. SUMMARY
[0004] In view of the above technical problems, the technical scheme adopted by the present application is as follows: a contact rail measuring device, which comprises: a first moving frame and a second moving frame, wherein the first moving frame and the second moving frame are arranged oppositely and are movably connected; a second rolling wheel is rotatably installed on the second moving frame; two symmetrical support frames are arranged on the first moving frame, a first rolling wheel is rotatably installed on each support frame, and a counting assembly is arranged on the first moving frame; the radius of the second rolling wheel is the same as that of the first rolling wheel, and is r, the length L of the multiple contact rails passed through is calculated by the second rolling wheel and the first rolling wheel, and the number N of the contact rails passed through by the second rolling wheel and the first rolling wheel is recorded by the counting assembly, wherein N is greater than or equal to 1.
[0005] Further, one end of a connecting rod is fixedly installed on the first moving frame, the other end of the connecting rod is slidably connected with the second moving frame, a reset spring is arranged between the first moving frame and the second moving frame, the reset spring is sleeved on the outer ring of the connecting rod, one end of a connecting frame is connected with the first moving frame and the second moving frame respectively, and the connecting frame is telescopic.
[0006] Further, the counting component comprises contact piece two and contact piece three, the contact piece two is fixedly connected with a support frame, the contact piece three is fixedly connected with the side of the connecting frame close to the moving frame one, the number of times of contact between the contact piece two and the contact piece three is set as n, when the contact piece two and the contact piece three contact each other once, the number of n increases by 1, in the initial state, n=0.
[0007] Further, the counting component further comprises a sliding rod and a contact piece one, the sliding rod and the contact piece one are arranged on the two support frames respectively, the number of times of contact between the contact piece one and the sliding rod is set as m, when the sliding rod and the contact piece one contact each other once, the number of m increases by 1, in the initial state, m=0.
[0008] Further, the calculation method of L is ; the calculation method of N is .
[0009] Further, the support frame where the sliding rod and the contact piece two are located is in sliding fit, and a reset spring two is arranged between the contact piece two and the support frame, the contact piece one is fixedly installed on the support frame which does not contact with the reset spring two, a driving block is fixedly installed on the reset spring two, the driving block is in slidable fit with the lever, the lever is fixedly installed on the rotating disc one, and the rotating disc one is fixedly connected with the rolling wheel one in the same axis.
[0010] Further, two sliding blocks are fixedly installed on the moving frame one, the sliding blocks are symmetrically arranged, the two sliding blocks are in sliding fit with the two support frames respectively, and a reset spring three is arranged between the support frame and the sliding block.
[0011] Further, the measuring device further comprises two guide mechanisms, the two guide mechanisms are installed on the moving frame two and a support frame respectively, the guide mechanism comprises two moving blocks, a clamping arm is slidably installed on the moving block, a ball is connected to the clamping arm, and a reset spring four is arranged between the clamping arm and the moving block.
[0012] Further, the measuring device further comprises a cleaning mechanism, the cleaning mechanism comprises two rotating discs two, one rotating disc two is fixedly connected with the rolling wheel two on the moving frame two in the same axis, and the other rotating disc two is fixedly connected with the rolling wheel one on the support frame in the same axis, one end of the rotating arm is rotatably connected to each rotating disc two, the other end of the rotating arm is connected with a scraper, the scraper is in sliding fit with a guide strip, a reset spring five is arranged between the scraper and the sliding block, and the two guide strips are fixedly connected with the moving frame two and the support frame respectively.
[0013] In another aspect, the application discloses a contact rail measuring device, comprising: a storage for storing preset data; an encoder for counting; an alarm; and the contact rail measuring device.
[0014] Compared with the prior art, the application has the following beneficial effects: (1) The application drives the rolling wheels I and II to move and records the rotation numbers of the rolling wheels I and II in real time, quickly obtains the moving distances of the rolling wheels I and II on the contact rail, obtains the laying length of the contact rail in the measuring area, and automatically compares with the preset data, thereby verifying the actual laying distance of the contact rail with the design data, improving the measuring speed and accuracy; (2) The application can accurately record the connecting positions of the contact rail, i.e. the number of the contact rail, and verify the design data, thereby ensuring the measuring accuracy and verifying the actual construction information with the design information; (3) The application can remove the accumulated sand and stones around the contact rail by the scraper during the measuring process, reduces the interference factors of the measuring process, and improves the measuring accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the application.
[0016] Figure 2 It is a schematic diagram of the overall structure of the application. Figure 1 It is a schematic diagram of the overall structure of the application.
[0017] Figure 3 It is a schematic diagram of the overall structure of the application. Figure 2 It is a schematic diagram of the overall structure of the application.
[0018] Figure 4 It is a schematic diagram of the overall structure of the application. Figure 1 .
[0019] Figure 5 It is a schematic diagram of the overall structure of the application. Figure 4 It is a schematic diagram of the overall structure of the application.
[0020] Figure 6 It is a schematic diagram of the overall structure of the application. Figure 2 .
[0021] Figure 7 It is a schematic diagram of the overall structure of the application.
[0022] Reference numerals: 1-Moving frame one; 2-Moving frame two; 3-Connecting rod; 4-Reset spring one; 5-Connecting frame; 6-Rolling wheel two; 7-Support frame; 8-Rolling wheel one; 9-Toggle lever; 10-Drive block; 11-Sliding rod; 12-Reset spring two; 13-Contact piece one; 14-Contact piece two; 15-Contact piece three; 16-Slider; 17-Reset spring three; 18-Turntable one; 19-Moving block; 20-Clamping arm; 21-Ball bearing; 22-Reset spring four; 23-Turntable two; 24-Rotating arm; 25-Scraper; 26-Guide strip; 27-Reset spring five; 28-Handheld lever; 29-Anti-slip sleeve; 30-Contact rail. Detailed Implementation
[0023] To facilitate understanding of the present invention, the following embodiments are provided. Those skilled in the art should understand that these embodiments are merely illustrative and should not be construed as limiting the scope of the invention.
[0024] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0025] Example: Figures 1-7 The present invention relates to a contact rail measuring device, the measuring device comprising: Mobile frame 1 and mobile frame 2 are arranged opposite to each other and are movably connected; The movable frame 2 is rotatably mounted with rollers 2 6; The movable frame 1 is provided with two symmetrically arranged support frames 7, and the support frames 7 are rotatably mounted with rollers 8, and the movable frame 1 is provided with a counting component. The center line connecting the two rollers 6 and the two rollers 8 forms a triangle, which ensures that the rollers 6 and 8 will not deflect during their movement.
[0026] The radius of the second rolling wheel 6 is the same as that of the first rolling wheel 8, both being r. The circumference of the second rolling wheel 6 and the first rolling wheel 8 can be obtained from the radius r. In this embodiment, the standard circumference is 297.5 mm. The length L of the multiple contact rails 30 passed by the second rolling wheel 6 and the first rolling wheel 8 is calculated. The number N of the contact rails 30 passed by the second rolling wheel 6 and the first rolling wheel 8 is recorded by the counting component, where N≥1.
[0027] Specifically, when measuring the contact rail 30, the rolling wheel two 6 and the two rolling wheels one 8 roll forward along the contact rail 30, and in the process of rolling forward, the rolling wheel two 6 and the rolling wheel one 8 contact the b side in the contact rail 30; the distance between the two oppositely arranged contact rails 30 is certain, and the relative distance between the rolling wheel two 6 and the rolling wheel one 8 is constant in the initial state, which is equal to the distance between the two opposite b sides of the two contact rails 30.
[0028] In the process of measurement, as the rolling wheel two 6 and the rolling wheel one 8 roll forward, the rolling wheel two 6 and the rolling wheel one 8 rotate a plurality of turns, and the number of turns can be recorded by the counting component; in the embodiment, the number of turns is represented by m, and the distance L of the rolling wheel two 6 and the rolling wheel one 8 advancing can be calculated by the number of turns m and the radius r, which is also the added distance of the plurality of contact rails 30.
[0029] Meanwhile, as a known technology, the connection between the two adjacent contact rails 30 is connected by rivets and other connecting pieces, especially the connecting pieces are fixed on the b side of the contact rail 30 by rivets. In the embodiment, the connecting piece is a rectangular plate. In the process of the rolling wheel two 6 and the rolling wheel one 8 advancing, when moving to the position of the plate, the distance between the plates arranged on the two contact rails 30 is less than the distance between the two b sides (the plate itself has a thickness), so the distance between the rolling wheel two 6 and the rolling wheel one 8 will become smaller, that is, the distance between the moving frame one 1 and the moving frame two 2 will be reduced, so as to smoothly pass through, and at this time, the counting component will also record the change of the distance between the rolling wheel two 6 and the rolling wheel one 8 once.
[0030] In the embodiment, the distance between the rolling wheel two 6 and the rolling wheel one 8 changes once, which represents that a connecting piece is passed, and also represents that the phenomenon of the two contact rails 30 connecting occurs once, and N represents the number of times of the phenomenon of the two contact rails 30 occurring, so that the number of the contact rails 30 passed by the rolling wheel two 6 and the rolling wheel one 8 in the process of measurement can be known through N.
[0031] In the embodiment, N is a natural number other than 0, such as 1, 2, 3, 4,....
[0032] One end of the connecting rod 3 is fixedly installed on the moving frame one 1, the other end of the connecting rod 3 is in sliding fit with the moving frame two 2, a reset spring one 4 is arranged between the moving frame one 1 and the moving frame two 2, the reset spring one 4 is sleeved on the outer circle of the connecting rod 3, one end of the connecting frame 5 is connected to the moving frame one 1 and the moving frame two 2 respectively, and the connecting frame 5 is telescopic.
[0033] As Figure 1 , Figure 2 , Figure 7As shown, when the rolling wheel two 6 encounters the connecting piece of the connecting place of the two contact rails 30, the rolling wheel two 6 will roll onto the plate, at this time the plate will push the rolling wheel two 6 to move towards the side of the moving frame one 1, the rolling wheel two 6 drives the moving frame two 2 to move towards the moving frame one 1, because the connecting rod 3 and the moving frame two 2 are in sliding fit, so the moving frame one 1 and the moving frame two 2 will not be limited in the process of reducing the distance between them, and in this process, the reset spring one 4 will be compressed, after passing through the connecting place, the moving frame two 2 can be reset under the elastic force of the reset spring one 4. At the same time, the rolling wheel one 8 also passes through the plate, so the plate will push the rolling wheel one 8 to make the rolling wheel one 8 drive the support frame 7 to slide on the sliding block 16, that is, the support frame 7 moves towards the side of the moving frame two 2, and the reset spring three 17 will be compressed, the function of the reset spring three 17 is to assist the reset of the support frame 7. The moving frame one 1 and the moving frame two 2 are connected together through the connecting frame 5, the connecting frame 5 is composed of two parts which can be extended and retracted, so as to facilitate the change of the distance between the moving frame one 1 and the moving frame two 2.
[0034] In addition, in order to facilitate the forward movement of the rolling wheel two 6 and the rolling wheel one 8, a hand-held rod 28 is connected on the connecting frame 5 and one support frame 7 respectively, and a non-slip sleeve 29 is sleeved on the hand-held rod 28, and the staff can push the hand-held rod 28 forward by holding the non-slip sleeve 29.
[0035] The counting component includes the contact piece two 14 and the contact piece three 15, the contact piece two 14 is fixedly connected with one support frame 7, and the contact piece three 15 is fixedly connected with the side of the connecting frame 5 close to the moving frame one 1, the number of times of contact between the contact piece two 14 and the contact piece three 15 is set to n, and n increases by 1 every time the contact piece two 14 and the contact piece three 15 contact, and in the initial state, n=0.
[0036] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 When the rolling wheel one 8 and the support frame 7 move towards the moving frame two 2, the contact piece two 14 on the support frame 7 will contact the contact piece three 15 on the connecting frame 5 once, at this time n will increase by one, that is, n will increase by 1. In the initial state, n is zero, if n increases by one, it means that there is one connection between the two contact rails 30. For example, if n finally equals to 1, it means that there is one connection between the two contact rails 30, and it can be known that the number N of the contact rails 30 passed through is 2.
[0037] The counting component also includes the sliding rod 11 and the contact piece one 13, the sliding rod 11 and the contact piece one 13 are arranged on the two support frames 7 respectively, and the number of times of contact between the contact piece one 13 and the sliding rod 11 is set to m, and m increases by 1 every time the sliding rod 11 and the contact piece one 13 contact (in the initial state, m=0).
[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, when the sliding rod 11 moves to the side close to the contact piece one 13, the sliding rod 11 will contact the contact piece one 13, then m will be increased by one, i.e. 1, if the sliding rod 11 and the contact piece one 13 contact 5 times finally, then m is equal to 5.
[0039] The calculation methods of L and N are shown in formula (1) and formula (2) respectively: (1) (2) Specifically, after the rolling wheel two 6 and the rolling wheel one 8 roll m circles, the rolling wheel two 6 and the rolling wheel one 8 move the distance of m circumferences, and the length of the measured contact rail 30 is obtained by calculation; for example, if three contact rails 30 are connected, then there are two connecting places, so n+1=3 is the number of the contact rails 30 passed.
[0040] In this embodiment, π is 3.14.
[0041] The sliding rod 11 is in sliding fit with the support frame 7 where the contact piece two 14 is located, and the reset spring two 12 is arranged between the contact piece two 14 and the support frame 7, the contact piece one 13 is fixedly installed on the support frame 7 which does not contact the reset spring two 12, the driving block 10 is fixedly installed on the reset spring two 12, the driving block 10 is in slidable fit with the push rod 9, and the push rod 9 is fixedly installed on the turntable one 18, and the turntable one 18 is coaxially fixedly connected with the rolling wheel one 8.
[0042] As Figure 3 , Figure 4 shown, in the process of the rolling wheel one 8 rotating forward, the rolling wheel one 8 will drive the turntable one 18 to rotate, the turntable one 18 will rotate one circle every time the rolling wheel one 8 rotates one circle, the push rod 9 on the turntable one 18 will contact the driving block 10 and push the driving block 10, so that the driving block 10 drives the sliding rod 11 to slide to the side close to the contact piece one 13, thereby making the sliding rod 11 contact the contact piece one 13, and the reset spring two 12 will be deformed in the process that the sliding rod 11 approaches the contact piece one 13, and the reset spring two 12 functions to assist the reset of the sliding rod 11.
[0043] The moving frame one 1 is fixedly installed with two sliding blocks 16, the sliding blocks 16 are symmetrically arranged, the two sliding blocks 16 are in slidable fit with the two support frames 7 respectively, and the reset spring three 17 is arranged between the support frame 7 and the sliding block 16.
[0044] The measuring device further comprises two guiding mechanisms, which are respectively arranged on the moving frame two 2 and the support frame 7, and each of the guiding mechanisms comprises two moving blocks 19, a clamping arm 20 is slidably arranged on each of the moving blocks 19, a ball 21 is connected to the clamping arm 20, and a reset spring four 22 is arranged between the clamping arm 20 and the moving block 19.
[0045] As shown in Figure 2 , Figure 4 , Figure 5 During the movement of the rolling wheel two 6 and the rolling wheel one 8 along the b surface, the ball 21 also rolls along the a surface of the contact rail 30, and the ball 21 plays a role in stabilizing the whole measuring device. The ball 21 can rotate on the clamping arm 20, so that the movement of the ball 21 is smooth, and the two balls 21 and the clamping arm 20 located on both sides of the connecting frame 5 can always clamp the contact rail 30, so that the whole device will not be deflected.
[0046] In addition, even during the movement of the moving frame two 2 close to the moving frame one 1 and the support frame 7 close to the moving frame one 1, the clamping arm 20 will slide relative to the moving block 19, so as not to interfere with the movement of the moving block 19, and the reset spring four 22 can assist the reset of the moving block 19. It can be known that the moving block 19 arranged on the moving frame two 2 is fixedly connected with the moving frame two 2, and the moving block 19 arranged on the support frame 7 is fixedly connected with the support frame 7.
[0047] The measuring device further comprises a cleaning mechanism, which comprises two rotating discs two 23, one rotating disc two 23 is coaxially and fixedly connected with the rolling wheel two 6 on the moving frame two 2, and the other rotating disc two 23 is coaxially and fixedly connected with the rolling wheel one 8 on the support frame 7. One end of a rotating arm 24 is rotatably connected to each of the rotating discs two 23, the other end of the rotating arm 24 is connected with a scraper 25, the scraper 25 is in sliding fit with a guide strip 26, a reset spring five 27 is arranged between the scraper 25 and the sliding block 16, and the two guide strips 26 are fixedly connected with the moving frame two 2 and the support frame 7 respectively.
[0048] As shown in Figure 1 , Figure 2 , Figure 6 During the rotation of the rolling wheel two 6 and the rolling wheel one 8, the rolling wheel two 6 and the rolling wheel one 8 will drive the connected rotating disc two 23 to rotate, so that the rotating rotating disc two 23 pulls the scraper 25 to move back and forth along the guide strip 26 through the rotating arm 24, and the reset spring five 27 assists the reset of the scraper 25. The reciprocating movement of the scraper 25 located in front of the rolling wheel two 6 and the rolling wheel one 8 can push away the accumulated sand and stones on the ground where the contact rail 30 is laid, so as to avoid the change of the distance between the rolling wheel two 6 and the rolling wheel one 8 due to the accumulated sand and stones, and to avoid the deviation of the measurement result.
[0049] Furthermore, the application discloses a contact rail measuring device, comprising: a storage for storing preset data; an encoder for counting; an alarm; and a contact rail measuring device as mentioned above.
[0050] In particular, the data information of the sliding rod 11 and the contact of the contact piece one 13, the contact piece two 14 and the contact piece three 15 are all transmitted to the encoder, and furthermore, before detection, the number N of the contact rails 30 contained in the measuring area set in the design drawing and the total length N information of the plurality of contact rails 30 are inputted into the encoder, so that during the measurement, the measuring information is matched and compared with the information in the encoder in real time, and if deviation occurs, the alarm will sound to prompt errors, and the measurement information and the like are stored in the storage. It can be understood that before the contact rails are arranged, the site exploration is carried out, and the construction drawing is drawn after calculation, and the total distance of the contact rails 30 to be laid and the number of the contact rails 30 to be laid are marked. Before measurement, the information about the contact rails 30 in the measured area can be obtained and inputted into the encoder.
[0051] Alternatively, in order to facilitate measurement and calculation, the person skilled in the art can design the information of the drawing, and flexibly select the diameters of the rolling wheel two 6 and the rolling wheel one 8, so as to make the number of revolutions of the rolling wheel two 6 and the rolling wheel one 8 in the measuring area an integer as much as possible. That is, the diameters of the rolling wheel two 6 and the rolling wheel one 8 are optional.
[0052] In the embodiment, both the measurement of the on-site contact rails 30 and the calibration of the information measured on site with the information of the design drawing are included, the measurement is completed at the same time as the verification, the work efficiency is improved, and the measurement accuracy is improved.
[0053] The above embodiments are only used to illustrate the technical solutions of the application, rather than limit them; the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the application as described above, which are not provided in details for the sake of simplicity; although the application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the application.
Claims
1. A contact rail measuring device, characterized in that, The measuring device includes: Mobile frame one (1) and mobile frame two (2) are arranged opposite to each other and are movably connected; The movable frame 2 (2) is rotatably mounted with a roller 2 (6); The movable frame (1) is provided with two symmetrically arranged support frames (7), and the support frames (7) are rotatably mounted with rollers (8), and the movable frame (1) is provided with a counting component. The radius of the second rolling wheel (6) is the same as that of the first rolling wheel (8), both being r. The length L of the multiple contact rails (30) passed by the second rolling wheel (6) and the first rolling wheel (8) is calculated. The number N of the contact rails (30) passed by the second rolling wheel (6) and the first rolling wheel (8) is recorded by the counting component, where N≥1.
2. The contact rail measuring device as described in claim 1, characterized in that, One end of a connecting rod (3) is fixedly installed on the first movable frame (1), and the other end of the connecting rod (3) is slidably engaged with the second movable frame (2). A return spring (4) is provided between the first movable frame (1) and the second movable frame (2). The return spring (4) is sleeved on the outer ring of the connecting rod (3). One end of a connecting frame (5) is connected to the first movable frame (1) and the second movable frame (2). The connecting frame (5) is telescopic.
3. The contact rail measuring device as described in claim 2, characterized in that, The counting component includes contact piece two (14) and contact piece three (15). Contact piece two (14) is fixedly connected to a support frame (7), and contact piece three (15) is fixedly connected to the side of the connecting frame (5) near the movable frame one (1). The number of times contact piece two (14) and contact piece three (15) come into contact is set to n. When contact piece two (14) and contact piece three (15) come into contact once, the number of n is increased by 1. In the initial state, n=0.
4. The contact rail measuring device as described in claim 3, characterized in that, The counting component also includes a sliding rod (11) and a contact piece (13). The sliding rod (11) and the contact piece (13) are respectively set on two support frames (7). The number of times the contact piece (13) contacts the sliding rod (11) is set to m. When the sliding rod (11) contacts the contact piece (13) once, the number of m is increased by 1. In the initial state, m=0.
5. The contact rail measuring device as described in claim 4, characterized in that, L is calculated as follows The calculation method for N is as follows: .
6. The contact rail measuring device as described in claim 4, characterized in that, The sliding rod (11) is slidably engaged with the support frame (7) where the second contact piece (14) is located, and a second return spring (12) is provided between the second contact piece (14) and the support frame (7). The first contact piece (13) is fixedly installed on the support frame (7) that does not contact the second return spring (12). A driving block (10) is fixedly installed on the second return spring (12). The driving block (10) is slidably engaged with the lever (9). The lever (9) is fixedly installed on the turntable (18). The turntable (18) is coaxially fixedly connected with the first rolling wheel (8).
7. The contact rail measuring device as described in claim 6, characterized in that, Two sliders (16) are fixedly installed on the movable frame (1). The sliders (16) are arranged symmetrically. The two sliders (16) are slidably engaged with the two support frames (7) respectively. A reset spring (17) is provided between the support frame (7) and the slider (16).
8. A contact rail measuring device as described in claim 7, characterized in that, The measuring device also includes two guiding mechanisms, which are respectively mounted on the movable frame (2) and the support frame (7). The guiding mechanism includes two movable blocks (19), on which a clamping arm (20) is slidably mounted. A ball bearing (21) is connected to the clamping arm (20), and a return spring (22) is provided between the clamping arm (20) and the movable block (19).
9. A contact rail measuring device as described in claim 8, characterized in that, The measuring device also includes a cleaning mechanism, which includes two turntables (23). One turntable (23) is coaxially fixedly connected to the rolling wheel (6) on the moving frame (2), and the other turntable (23) is coaxially fixedly connected to the rolling wheel (8) on the support frame (7). One end of a rotating arm (24) is rotatably connected to each turntable (23), and the other end of the rotating arm (24) is connected to a scraper (25). The scraper (25) is slidably engaged with the guide strip (26), and a return spring (27) is provided between the scraper (25) and the slider (16). The two guide strips (26) are respectively fixedly connected to the moving frame (2) and the support frame (7).
10. A contact rail measuring device, characterized in that, include: Storage, used to store pre-set data; An encoder, used for counting; Alarm; And a contact rail measuring device as described in any one of claims 1-9.