Distance measuring device for crown block track

Abstract

The utility model discloses a distance measuring device for a crown block track, the crown block track comprises a walking track and a steering track which are located at different height positions, the distance measuring device comprises a fixing mechanism, and the fixing mechanism is used for clamping the walking track and can move along the extending direction of the walking track. The measuring mechanism is connected with the fixing mechanism and moves synchronously with the fixing mechanism, and the measuring mechanism is used for measuring the distance between the walking track and the steering track in the horizontal direction. The measuring mechanism comprises a sensor, an elastic pressing assembly and a roller, the elastic pressing assembly is used for connecting the fixing mechanism and the roller, the elastic pressing assembly is used for pressing the roller on the steering track, and the roller can move towards the fixing mechanism under the extrusion of the steering track so as to continuously compress the elastic pressing assembly; the sensor is used for detecting the moving distance of the roller in the horizontal direction. The distance measuring device can accurately measure the distance between the walking track and the steering track which are located at different height positions.

Description

Technical Field

[0001] The utility model relates to the technical field of material handling systems, in particular to a distance measuring device for overhead traveling vehicle tracks. Background Art

[0002] The automatic material handling system is composed of a large number of interlaced tracks, including running tracks and turning tracks. The overhead crane runs on the running tracks through running wheels, and the overhead crane includes guide wheels that can contact the turning tracks. The turning tracks guide the overhead crane to turn at the fork in the road through the guide wheels. Usually the guide wheels are located at the top of the overhead crane body, so the height of the turning track is higher than the height of the running track. Both the running track and the turning track include straight segments and arc segments. Regardless of whether it is a straight segment or an arc segment, the spacing between the running track and the turning track in the direction of the overhead crane's travel needs to remain unchanged, so that the arc segments of the two can remain concentric. In addition, the horizontal spacing between the running track and the turning track needs to be within the set error range. If the spacing is too small, the overhead crane will be stuck and unable to move forward. If the spacing is too large, the overhead crane will not be stable enough and will tip over.

[0003] At present, there is no distance measuring device for the distance between the running track and the turning track at different heights in the direction of the overhead crane. The turning track is generally judged by the installer's naked eyes or a single measuring ruler to determine whether the turning track is installed in place, and there is no suitable standard measuring tool. This cannot guarantee the installation accuracy of the turning track, that is, it cannot ensure the distance between the running track and the turning track. Utility Model Content

[0004] In order to overcome the above disadvantages, the purpose of the utility model is to provide a distance measuring device for an overhead travelling vehicle track, which can accurately measure the distance between the running track and the turning track at different heights.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a distance measuring device for an overhead traveling vehicle track, the overhead traveling vehicle track includes a walking track and a turning track located at different heights, and the distance measuring device includes:

[0006] A fixing mechanism, which is used to clamp the travel track and can move along the extension direction of the travel track;

[0007] A measuring mechanism, which is connected to the fixing mechanism and moves synchronously with the fixing mechanism, and is used to measure the distance between the walking track and the turning track in the horizontal direction;

[0008] The measuring mechanism includes a sensor, an elastic clamping assembly and a roller, wherein the elastic clamping assembly is used to connect the fixing mechanism and the roller, the elastic clamping assembly is used to press the roller onto the steering track, and the roller can move toward the fixing mechanism under the pressure of the steering track to continuously compress the elastic clamping assembly, and the sensor is used to detect the horizontal movement distance of the roller.

[0009] The beneficial effect of the utility model is that it is connected to the running track through a fixing mechanism and fixes the position of the entire distance measuring device. The measuring mechanism uses a roller to simulate the steering wheel of the overhead crane during actual driving, so that the roller contacts the steering track. Compared with the measurement by directly abutting the steering track with the measuring head, the error caused by the deformation of the steering wheel in the actual operation of the overhead crane is taken into consideration. The roller is pressed on the steering track by the elastic clamping component to produce deformation, so that the measurement result is more accurate to meet the high-precision driving requirements of the overhead crane. The displacement of the roller driven by the steering track and the elastic clamping component is measured by a sensor, and the change in the spacing between the steering track and the running track is judged based on this displacement to determine whether the change in the spacing between the steering track and the running track is within the allowable range, and the spacing between the running track and the steering track is inferred.

[0010] Furthermore, the elastic pressing assembly includes:

[0011] a sleeve having a horizontal channel;

[0012] A telescopic rod, the telescopic rod being able to slide horizontally along the horizontal channel, and a roller being arranged at the end of the telescopic rod extending out of the sleeve;

[0013] A spring is arranged in the horizontal channel, and the spring is always in a compressed state so as to move the telescopic rod toward the steering track.

[0014] The elastic clamping assembly uses the elastic force generated when the spring is compressed to push the telescopic rod to move toward the side away from the sleeve, thereby pressing the roller against the steering track. At the same time, due to the compressible nature of the spring, the telescopic rod can also move toward the sleeve under the action of external force to continue compressing the spring. The structure of the elastic clamping assembly provides a reset force for the movement of the roller caused by the change in the spacing between the walking track and the steering track.

[0015] Furthermore, the measuring mechanism further comprises a detection plate, the detection plate is fixed to the portion of the telescopic rod extending out of the sleeve, and the sensor directly measures the moving distance of the detection plate in the horizontal direction.

[0016] A detection plate is set up to move synchronously with the roller, and the sensor directly measures the displacement of the detection plate and converts the displacement of the detection plate into the spacing between the walking track and the steering track.

[0017] Furthermore, the telescopic rod comprises a rod-shaped portion and a limiting portion, the rod-shaped portion extends out of a horizontal channel, and the limiting portion is always located in the horizontal channel;

[0018] The end of the sleeve through which the telescopic rod passes is provided with a convex edge extending into the horizontal channel, the convex edge defines a through hole through which only the rod-shaped portion can pass, and the size of the limiting portion is larger than the through hole.

[0019] The cooperation between the convex edge and the limiting part can always limit the limiting part in the horizontal channel, thereby preventing the telescopic rod from completely separating from the sleeve under the push of the spring, and playing a limiting role.

[0020] Furthermore, the elastic clamping assembly also includes a plurality of adjusting members, the plurality of adjusting members are evenly distributed along the convex edge, each of the adjusting members is threadedly connected to the convex edge, and the end of each of the adjusting members can abut against the limiting portion.

[0021] When the adjusting piece is rotated, the initial position of the telescopic rod can be adjusted to achieve calibration of the distance measuring device.

[0022] Furthermore, the sleeve is also provided with a scale and a transparent portion corresponding to the scale, and the telescopic rod is provided with a pointer capable of indicating the scale.

[0023] The scale can be used to give a preliminary reading of the distance the roller has moved, i.e. a coarse adjustment, and can be used as a reference during the calibration process.

[0024] Furthermore, the distance measuring device further comprises a connecting column, which is vertically arranged and used to connect the fixing mechanism and the elastic pressing assembly, and the sensor is fixed on the connecting column.

[0025] The fixing mechanism and the elastic pressing component are fixed at different heights through a connecting column.

[0026] Furthermore, the connecting column is fixedly connected to the fixing mechanism, and the height position of the elastic pressing component relative to the connecting column is adjustable.

[0027] When measuring the distance, the height of the elastic clamping assembly can be adjusted according to the height difference between the running track and the turning track to ensure that the roller can abut against the turning track. Even between the running track and the turning track with different height differences, the distance measurement can be performed, thereby improving the versatility of the distance measuring device.

[0028] Furthermore, the elastic clamping assembly is connected to the connecting column via a bolt that passes through a sleeve, and a waist-shaped hole is provided on the sleeve for the bolt to slide, and the waist-shaped hole extends in the vertical direction.

[0029] Through a waist-shaped hole structure, the height position of the elastic clamping component can be quickly adjusted.

[0030] Furthermore, the travel track includes an upper end surface and a first side surface, and the upper end surface is for the travel wheels of the overhead travelling vehicle to travel;

[0031] The fixing mechanism includes an upper limit surface and a side limit surface which are perpendicular to each other, wherein the upper limit surface abuts against the upper end surface of the walking track to limit the position of the fixing mechanism in the vertical direction. The side limit surface matches the shape of the first side surface and abuts against the first side surface to limit the position of the fixing mechanism in the horizontal direction.

[0032] Furthermore, the fixing mechanism includes a base plate and a clamping plate fixed on the base plate, a side surface of the base plate is a side limiting surface, and a lower end surface of the clamping plate is an upper limit surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the distance measuring device in the embodiment of the utility model in the measuring state;

[0034] Figure 2 It is a side view of the distance measuring device in the embodiment of the utility model in the measuring state;

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure of the distance measuring device in the embodiment of the utility model;

[0036] Figure 4 A cross-sectional view of a distance measuring device in an embodiment of the utility model;

[0037] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0038] Figure 6 It is a structural schematic diagram of a calibration fixture in an embodiment of the utility model.

[0039] In the figure:

[0040] 100. Distance measuring device;

[0041] 1. Fixing mechanism; 11. Bottom plate; 111. Side limiting surface; 12. Clamping plate; 121. Upper limiting surface; 2. Sensor; 3. Elastic clamping assembly; 31. Sleeve; 311. Horizontal channel; 312. Convex edge; 313. Waist-shaped hole; 314. Transparent part; 32. Spring; 33. Telescopic rod; 331. Rod-shaped part; 332. Limiting part; 34. Adjusting member; 4. Roller; 5. Connecting column; 6. Detection plate;

[0042] 200, walking track; 2a, upper end surface; 2b, first side surface;

[0043] 300, turning track; 3a, second side surface;

[0044] 400, calibration fixture; 4a, vertical portion; 41a, first calibration surface; 4b, horizontal portion; 41b, second calibration surface. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0046] The distance measuring device 100 for the overhead traveling vehicle track of the present invention is used to measure the distance between the traveling track 200 and the turning track 300 in the horizontal direction. Figure 1 and attached Figure 2 As shown, the running track 200 and the turning track 300 are located at different heights, and the overhead travelling vehicle moves along the extending direction of the running track 200. The horizontal direction is a direction in the horizontal plane that is perpendicular to the running direction of the overhead travelling vehicle.

[0047] See attached Figure 1 As shown, the running track 200 includes an upper end surface 2a and a first side surface 2b, on which the running wheels of the overhead travelling vehicle run, and the first side surface 2b is a side of the running track 200 facing the turning track 300 in the horizontal direction. The turning track 300 includes a second side surface 3a, along which the turning wheels run to realize the turning of the overhead travelling vehicle.

[0048] See attached Figure 2 As shown, the distance measuring device 100 includes a fixing mechanism 1 and a measuring mechanism, wherein the fixing mechanism 1 clamps the running track 200 and can run along the extension direction of the running track 200. The measuring mechanism is connected to the fixing mechanism 1 and moves synchronously with the fixing mechanism 1, and the measuring mechanism is used to measure the distance between the running track 200 and the turning track 300 in the horizontal direction.

[0049] See attached Figure 2 As shown, the measuring mechanism includes a sensor 2, an elastic pressing component 3 and a roller 4, wherein the elastic pressing component 3 is used to connect the fixing mechanism 1 and the roller 4, and the elastic pressing component 3 is used to press the roller 4 on the second side surface 3a of the steering track 300, and the roller 4 can move toward the fixing mechanism 1 under the pressure of the steering track 300 to compress the elastic pressing component 3. The roller 4 is located within the height range of the second side surface 3a, the outer wall of the roller 4 abuts against the second side surface 3a of the steering track 300, and the roller 4 can roll along the side wall of the steering track 300, and the rolling direction of the roller 4 is the extension direction of the steering track 300. The sensor 2 is used to detect the moving direction of the roller 4 in the horizontal direction.

[0050] The steering wheel is a rubber-coated wheel, and the rubber coating will have elastic deformation. Since the steering wheel will undergo a certain deformation when it contacts the steering track 300, and this deformation cannot be represented by an accurate numerical value, but the impact is very large. Therefore, in this embodiment, the roller 4 and the steering wheel adopt the same size and structure, that is, the roller 4 is used to simulate the steering wheel, and the roller 4 is allowed to contact the steering track 300, and the roller 4 is pressed against the side wall of the steering track 300 through an elastic clamping component 3, and the displacement of the roller 4 under the push of the steering track 300 and the elastic clamping component 3 is measured by the sensor 2, and the change in the spacing between the steering track 300 and the running track 200 is judged based on this displacement. At the same time, the spacing between the running track 200 and the steering track 300 can be inferred based on the measurement result of the sensor 2.

[0051] In this embodiment, the roller 4 is used to contact the steering rail 300. Compared with measuring by directly abutting the steering rail 300 with the measuring head, the error caused by the deformation of the steering wheel in the actual operation of the overhead crane is taken into consideration, and the measurement result is more accurate to meet the high-precision overhead crane travel requirements.

[0052] See attached Figure 3 and attached Figure 4 As shown, the elastic pressing assembly 3 includes a sleeve 31, a spring 32 and a telescopic rod 33. The sleeve 31 has a horizontal channel 311 for the telescopic rod 33 to slide. The spring 32 is located in the horizontal channel 311 and can push the telescopic rod 33 so that its end extends out of the sleeve 31. The roller 4 is arranged at the end of the telescopic rod 33 extending out of the sleeve 31. The rotating shaft of the roller 4 is vertically fixed on the telescopic rod 33. The spring 32 is in a compressed state during the entire process of ranging.

[0053] In this embodiment, the elastic pressing assembly 3 uses the elastic force generated when the spring 32 is compressed to push the telescopic rod 33 toward the steering track, and can also press the roller 4 onto the steering track 300. At the same time, because the spring 32 can be compressed, under the action of external force, the telescopic rod 33 can also move toward the side of the sleeve 31 to continue to compress the spring 32. That is, the steering track 300 can push the telescopic rod 33 to move through the roller 4. The sleeve 31 guides the movement of the telescopic rod 33 and facilitates the placement of the spring 32. In this embodiment, the spring is a heavy-duty spring with a large elastic force, which can squeeze the roller onto the steering track and cause deformation.

[0054] See attached Figure 4 As shown, one end of the spring 32 abuts against the end of the horizontal channel 311 away from the telescopic rod 33, and the other end abuts against the end of the telescopic rod 33 located in the horizontal channel.

[0055] See attached Figure 5As shown, the telescopic rod 33 includes a rod-shaped portion 331 and a limiting portion 332. The rod-shaped portion 331 extends out of the horizontal channel 311. The roller 4 is arranged at the end of the rod-shaped portion 331. The limiting portion 332 is always located in the horizontal channel 311. The end of the spring 32 abuts against the limiting portion 332. The end of the sleeve 31 from which the telescopic rod extends is provided with a convex edge 312 extending into the horizontal channel. The convex edge 312 defines a through hole through which only the rod-shaped portion 331 can pass. The size of the limiting portion 332 is larger than the through hole. The cooperation between the convex edge 312 and the limiting portion 332 can always limit the limiting portion 332 in the horizontal channel 311, thereby preventing the telescopic rod 33 from completely detaching from the sleeve 31 under the push of the spring 32, and playing a limiting role.

[0056] In one embodiment, the elastic clamping assembly 3 also includes an adjusting member 34 , and a plurality of adjusting members 34 are provided. The plurality of adjusting members 34 are evenly distributed along the protruding edge 312 , and each adjusting member 34 is threadedly connected to the protruding edge 312 , and the end of each adjusting member 34 can abut against the limiting portion 332 .

[0057] In this embodiment, the adjusting member 34 is a top screw. When the adjusting member 34 is rotated, the position of the adjusting member 34 in the extension direction of the telescopic rod 33 will change because the adjusting member 34 abuts against the limit portion 332, that is, the initial position of the telescopic rod 33 can be adjusted to achieve calibration of the distance measuring device 100.

[0058] In one embodiment, the ranging device 100 also includes a connecting column 5, which is used to connect the fixing mechanism 1 and the elastic clamping assembly 3. The connecting column 5 is vertically arranged, the lower end of the connecting column 5 is fixedly connected to the fixing mechanism 1, and the sleeve 31 of the elastic clamping assembly 3 is fixed to the upper end of the connecting column 5.

[0059] Because the fixing mechanism 1 is connected to the running track 200 , the elastic pressing assembly 3 and the roller 4 are located at the height of the turning track 300 , and thus the two are fixed at different heights through a connecting column 5 .

[0060] In one embodiment, the end of the sleeve 31 has an opening, and the spring 32 can be taken out from the opening, which is convenient for replacing the spring 32. In this case, an end cap is provided at the opening, and one end of the spring 32 abuts against the end cap, or no end cap is provided at the opening, and one end of the spring 32 abuts against the connecting column 5.

[0061] In one embodiment, the sensor 2 is a laser distance sensor, and the sensor 2 includes a transmitter and a receiver, and the transmitter and the receiver are located in the same housing. The measuring mechanism also includes a detection plate 6, and the detection plate 6 is fixed on the telescopic rod 33. The sensor 2 directly measures the moving distance of the detection plate 6 in the telescopic direction of the telescopic rod 33. A detection light is formed between the transmitter and the receiver, and the detection light emitted by the transmitter is reflected by the detection plate 6 and received by the receiver, so that the distance measurement is performed.

[0062] Because the roller 4 is a rubber-coated wheel and in the distance measurement process, the roller 4 will roll along the steering track 300, so it is not convenient for the detection light of the sensor 2 to directly irradiate the roller 4. Therefore, a detection plate 6 is provided to move synchronously with the roller 4, and the sensor 2 directly measures the displacement of the detection plate 6 and converts the displacement of the detection plate 6 into the distance between the walking track and the steering track 300.

[0063] For example, at the initial stage, when the detection device is calibrated by the calibration fixture 400, the telescopic rod 33 does not move at all, and the sensor 2 does not detect the position change of the detection plate 6. The distance measuring sensor 2 measures the distance between the walking track and the steering track 300 to be 120 mm. When the sensor 2 detects that the detection plate 6 moves 1 mm toward the column, the distance between the walking track and the steering track 300 is 119 mm; when the sensor 2 detects that the detection plate 6 is pushed by the spring 32 to move 1 mm away from the column, the distance between the walking track and the steering track 300 is 121 mm.

[0064] In one embodiment, the detection plate 6 and the telescopic rod 33 are detachably connected, and the detection plate 6 is an L-shaped structure, including a horizontal portion 4b fixed to the telescopic rod 33 and a vertical portion 4a extending vertically downward. The vertical portion 4a includes a vertical surface within the working range of the sensor 2, that is, the detection light of the sensor 2 is emitted onto the vertical surface.

[0065] Of course, in one embodiment, the detection plate 6 and the telescopic rod 33 may also be an integrated part.

[0066] In one embodiment, the height position of the sleeve 31 relative to the connecting column 5 is adjustable, and the sleeve 31 is fixed to the connecting column 5 by bolts. The sleeve 31 is provided with a waist-shaped hole 313 for the bolt to pass through. The waist-shaped hole 313 extends in the vertical direction, and the bolt can slide up and down in the waist-shaped hole 313. The connecting column 5 is provided with a bolt hole threadedly connected to the bolt.

[0067] In this embodiment, the height position of the sleeve 31 can be adjusted through the waist-shaped hole 313, that is, the height position of the roller 4 can be adjusted. When measuring the distance, the height of the roller 4 can be adjusted according to the height difference between the running track 200 and the turning track 300 to ensure that the roller 4 can abut against the turning track. The versatility of the distance measuring device 100 is improved, and the distance measurement can be performed even between the running track 200 and the turning track 300 with different height differences.

[0068] In one embodiment, the sleeve 31 is also provided with a scale, the telescopic rod 33 is provided with a pointer that can indicate the scale, and the sleeve 31 is provided with a transparent portion 314 corresponding to the pointer, the movement of the pointer can be seen from the transparent portion 314, and the movement distance of the pointer is recorded by the scale. The scale can be used for preliminary reading of the movement distance of the roller 4, that is, rough adjustment, which can be used as a reference during the calibration process. The setting of the scale can also be used to visually judge the degree of change in the spacing during measurement; it can also make a preliminary judgment on the wear of the distance measuring device later to see whether parts need to be replaced, such as roller wear.

[0069] In one embodiment, the fixing mechanism 1 includes an upper limit surface 121 and a side limit surface 111 which are perpendicular to each other, and the upper limit surface 121 and the side limit surface 111 intersect. The upper limit surface 121 abuts against the upper end surface 2a of the walking track 200, and is used to limit the position of the fixing mechanism 1 in the vertical direction. The side limit surface 111 matches the shape of the first side surface 2b and abuts against the first side surface 2b, and is used to limit the position of the fixing mechanism 1 in the horizontal direction. The setting of the upper limit surface 121 and the side limit surface 111 allows the fixing mechanism 1 to be located at the position where the walking track 200 is located, and no deviation will occur even when the fixing mechanism 1 moves along the walking track 200.

[0070] Because the running track 200 and the turning track 300 include straight segments and arc segments, the upper end faces 2a of the straight segments and arc segments of the running track 200 are both planes, but the first side face 2b of the arc segment is an arc segment. Therefore, when the distance measuring device 100 is used to measure the spacing between the straight segments of the running track 200 and the turning track 300, the side limit surface 111 is a plane; when the distance measuring device 100 is used to measure the spacing between the arc segments of the running track 200 and the turning track 300, the side limit surface 111 is an arc surface that matches the curvature of the first side face 2b. In other words, the fixing mechanism 1 must be completely fitted with the running track 200, and the fixing mechanism 1 is set according to the shape of the running track 200.

[0071] See attached Figure 3As shown, the fixing mechanism 1 includes a bottom plate 11 and a clamping plate 12 fixed on the top of the bottom plate 11, wherein one side surface of the bottom plate 11 is a side limit surface 111, and the lower end surface of the clamping plate 12 is an upper limit surface 121. The bottom plate 11 and the clamping plate 12 are detachably connected structures, which are easy to replace, and can also be an integrated structure. The fixing column is detachably connected to the bottom plate 11.

[0072] In one embodiment, the distance measuring device 100 needs to be calibrated by a calibration fixture 400 before performing distance measurement. Figure 6 As shown, the calibration fixture 400 is L-shaped as a whole, including a vertical portion 4a and a horizontal portion 4b. The vertical portion 4a includes a first calibration surface 41a, which abuts against the outer wall of the roller 4. The horizontal portion 4b includes a second calibration surface 41b, which is a copy of the second side surface 3a of the steering track 300 and matches the shape of the side limit surface 111, that is, when the side limit surface 111 is an arc surface, the second calibration surface 41b is an arc surface with the same curvature; when the side limit surface 111 is a plane, the second calibration surface 41b is a plane.

[0073] The dimension measured by the calibration jig 400 is a reference dimension. Because of the machining, it has high precision and can be used as a reference measurement tool. During calibration, the outer wall of the roller 4 abuts against the first calibration surface 41a, and the side limit surface 111 abuts against the second calibration surface. During calibration, a gap is left between the adjustment member 34 and the limit portion 332, and the sensor 2 resets the zero point. At this time, the distance measured by the sensor 2 is 120mm. However, the limit position of the roller 4 can be adjusted by the adjustment member 34, that is, the maximum distance that the roller moves toward the steering track. The limit position of the roller 4 can be limited to 122mm when the distance measured by the sensor is 122mm by the adjustment member 34. In this way, when the sensor measures a distance equal to 122mm, it is a problem data, which can reduce data processing.

[0074] During operation, the distance measuring device 100 places the side limit surface 111 against the first side surface 2b, the upper limit surface 121 against the upper end surface 2a of the running wheel, and the outer wall of the roller 4 against the second side surface 3a of the turning track 300. At this time, the spring 32 is in a compressed state and can be continuously compressed. The limit portion of the telescopic rod 33 does not abut against the adjusting member 34, that is, at this time, the telescopic rod 33 and the roller 4 can reciprocate along the axial direction of the telescopic rod 33. Since the spring 32 is compressed, it always increases a force for the telescopic rod 33 to move toward the running track 200, pressing the roller 4 against the second side surface 3a. Then, the fixing mechanism 1 is pushed to move along the extension direction of the running track 200. In this process, the sensor 2 collects the displacement of the detection plate 6 and converts it into the distance between the second side surface 3a and the first side surface 2b, that is, the distance to be measured between the running track 200 and the turning track 300.

[0075] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A distance measuring device for an overhead crane track, wherein the overhead crane track comprises a running track and a turning track at different heights, characterized in that: The distance measuring device comprises: A fixing mechanism, which is used to clamp the travel track and can move along the extension direction of the travel track; A measuring mechanism, which is connected to the fixing mechanism and moves synchronously with the fixing mechanism, and is used to measure the distance between the walking track and the turning track in the horizontal direction; The measuring mechanism includes a sensor, an elastic clamping assembly and a roller, wherein the elastic clamping assembly is used to connect the fixing mechanism and the roller, the elastic clamping assembly is used to press the roller onto the steering track, and the roller can move toward the fixing mechanism under the pressure of the steering track to continuously compress the elastic clamping assembly, and the sensor is used to detect the horizontal movement distance of the roller.

2. The distance measuring device for overhead traveling vehicle track according to claim 1, characterized in that: The elastic pressing component comprises: a sleeve having a horizontal channel; A telescopic rod, the telescopic rod being able to slide horizontally along the horizontal channel, and a roller being arranged at the end of the telescopic rod extending out of the sleeve; A spring is arranged in the horizontal channel, and the spring is always in a compressed state so as to move the telescopic rod toward the steering track.

3. The distance measuring device for overhead traveling vehicle track according to claim 2, characterized in that: The measuring mechanism further comprises a detection plate, which is fixed to the portion of the telescopic rod extending out of the sleeve, and the sensor directly measures the moving distance of the detection plate in the horizontal direction.

4. The distance measuring device for overhead traveling vehicle track according to claim 2, characterized in that: The telescopic rod comprises a rod-shaped portion and a limiting portion, the rod-shaped portion extends out of a horizontal channel, and the limiting portion is always located in the horizontal channel; The end of the sleeve through which the telescopic rod passes is provided with a convex edge extending into the horizontal channel, the convex edge defines a through hole through which only the rod-shaped portion can pass, and the size of the limiting portion is larger than the through hole.

5. The distance measuring device for overhead traveling vehicle track according to claim 4, characterized in that: The elastic clamping assembly also includes a plurality of adjusting members, which are evenly distributed along the convex edge, and each of the adjusting members is threadedly connected to the convex edge, and the end of each of the adjusting members can abut against the limiting portion.

6. The distance measuring device for overhead traveling vehicle track according to claim 2, characterized in that: The sleeve is also provided with a scale and a transparent part corresponding to the scale, and the telescopic rod is provided with a pointer capable of indicating the scale.

7. The distance measuring device for overhead traveling vehicle track according to any one of claims 1 to 6, characterized in that: The distance measuring device also includes a connecting column, which is vertically arranged and used to connect the fixing mechanism and the elastic pressing assembly, and the sensor is fixed on the connecting column.

8. The distance measuring device for overhead traveling vehicle track according to claim 7, characterized in that: The connecting column is fixedly connected to the fixing mechanism, and the height position of the elastic pressing component relative to the connecting column is adjustable.

9. The distance measuring device for overhead traveling vehicle track according to claim 8, characterized in that: The elastic pressing assembly is connected to the connecting column through a bolt penetrating a sleeve, and a waist-shaped hole for the bolt to slide is provided on the sleeve, and the waist-shaped hole extends in a vertical direction.

10. The distance measuring device for overhead traveling vehicle track according to any one of claims 1 to 6 or 8 or 9, characterized in that: The travel track includes an upper end surface and a first side surface, and the upper end surface is for the travel wheels of the overhead travelling vehicle to travel; The fixing mechanism comprises an upper limit surface and a side limit surface which are perpendicular to each other, the upper limit surface abuts against the upper end surface of the walking track, and the side limit surface matches the shape of the first side surface and abuts against the first side surface; The fixing mechanism comprises a bottom plate and a clamping plate fixed on the top of the bottom plate, one side surface of the bottom plate is a side limiting surface, and the lower end surface of the clamping plate is an upper limit surface.

Images