Adjustable support type line beam eccentricity measuring device

Abstract

The utility model discloses adjustable support type line beam eccentric measuring device applied to the technical field of railway bridge eccentric measuring device, including vertical adjusting unit and with the vertical setting of vertical adjusting unit horizontal measuring unit, and horizontal measuring unit includes the measuring fixture of swing connection in the outside of horizontal pipe, and the measuring fixture includes the laser range finder of the connection of traction rope and line wheel, and line wheel is used for the take -up laser range finder, and the traction rope keeps plumb state under the gravity of laser range finder, when measuring to the steel rail, laser range finder bottom emits a laser beam downward, forms a clear light spot on the target surface, moves the measuring fixture outside the horizontal pipe, makes the light spot's vertical projection point and the positioning point that needs to measure align after laser range finder stable, reads the scale value on the horizontal pipe at this time and completes the ranging, and laser collimation is good, need not human eye visual positioning, can objective quick positioning, and the precision can reach millimeter level, and the measurement is more accurate.

Description

Technical Field

[0001] This utility model relates to the technical field of railway bridge eccentricity measuring devices, and in particular to an adjustable support type beam eccentricity measuring device. Background Technology

[0002] Eccentricity measurement of railway bridges is a key safety inspection task in railway bridge maintenance. It refers to measuring the horizontal deviation between the centerline of the track on the bridge and the design centerline of the bridge beam itself. If this deviation is too large, it will cause the train load to be unevenly distributed on the beam, resulting in uneven loading, which will seriously affect the service life of the bridge and its supports, and even endanger traffic safety.

[0003] Traditional methods for measuring the eccentricity of railway bridge tracks mainly utilize steel tape measures, leveling bulbs, steel rulers, and plumb bobs to measure the horizontal distance from the outer edge of the rail to the flange of the beam. Existing technologies, such as the utility model patent with Chinese patent authorization announcement number CN210315094U, disclose a measuring ruler for railway bridge track eccentricity and ballast thickness. This ruler includes a horizontal bar, a vertical bar, a transverse ruler, and a vertical ruler. When measuring double-track railway bridges, rail braces are used to hold the inner side of the outer rail. By stretching the vertical and transverse rulers, the correction holes are positioned at the edge of the beam, allowing the measurement of the horizontal distance from the bridge edge to the inner side of the outer rail. This allows for the indirect calculation of the bridge track eccentricity value. The vertical distance from the top surface of the rail to the top surface of the ballast retaining wall can also be measured, allowing for the indirect calculation of the ballast thickness.

[0004] However, although the existing measuring tools have simplified the measurement process to some extent, the movement and positioning of their readers on the horizontal and vertical bars depend on the operator's feel, which can easily lead to visual errors when reading the scale, and thus may result in measurement errors. Especially when multiple points need to be measured, it is difficult to guarantee the consistency of repeated positioning. Therefore, we propose an adjustable bracket-type beam eccentricity measuring device to solve the above problems. Utility Model Content

[0005] The core of this invention lies in the use of a measuring fixture, including a laser plumb bob, that is movably mounted on the outside of the horizontal tube. This fixture automatically positions the measuring point using the laser plumb bob, solving the problem in existing rail measurement and positioning technologies that rely heavily on the operator's touch and are prone to visual errors when reading the scale. Furthermore, it offers superior positioning stability.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] An adjustable bracket-type beam eccentricity measuring device includes a vertical adjustment unit and a horizontal measuring unit perpendicular to the vertical adjustment unit. The vertical adjustment unit includes a column and a sleeve movably connected to the outside of the column, and the sleeve can move along the Z direction on the outside of the column. The bottom end of the column is connected to a base support unit that supports the vertical adjustment unit. The horizontal measuring unit includes a horizontal tube perpendicular to the column, and the horizontal tube is connected to the column through the sleeve. The horizontal tube can move along the X direction inside the sleeve. A bubble level is fixedly installed on the outer end face of the horizontal tube. The horizontal measuring unit also includes a positioning plate fixedly installed on the outer end of the horizontal tube and a measuring clamp movably connected to the outside of the horizontal tube. The measuring clamp includes a moving part, and the moving part includes a connecting block slidably connected to the outer surface of the horizontal tube. A pressure pin is provided through the outer end face of the connecting block, and the pressure pin is threadedly connected to the connecting block. A spool is fixedly provided at the top of the connecting block. The measuring clamp also includes a laser plumb bob connected to the spool via a traction rope. The spool is used to raise and lower the laser plumb bob. The laser plumb bob keeps the traction rope vertical under the action of gravity.

[0008] As a further improvement of this application, the base support unit includes a counterweight base plate and a support fixedly installed on the top surface of the counterweight base plate. The outer end face of the support is provided with a mounting hole, and the mounting hole is provided with a mounting pin. The outer surface of the mounting pin is fixedly provided with a convex thread structure, and the inner surface of the mounting hole is provided with a concave thread structure that mates with the mounting pin.

[0009] As a further improvement of this application, the column includes a column body and a fixing hole opened on the outer end face of the column body. The column body is inserted into the top of the counterweight base plate through the support. The fixing hole and the mounting hole are matched and set. The mounting pin is threadedly connected to the column body through the fixing hole and plays a role in fixing the column body and the support.

[0010] As a further improvement of this application, the sleeve includes a cylindrical body, and the interior of the cylindrical body has a first cylindrical groove arranged along the Z direction, and the interior of the cylindrical body has a second cylindrical groove arranged along the X direction. The column is slidably connected to the cylindrical body through the first cylindrical groove, and the horizontal pipe is slidably connected to the cylindrical body through the second cylindrical groove.

[0011] As a further improvement to this application, the outer end face of the cylinder is threaded with a first locking pin arranged in the X direction, and the outer end face of the cylinder is threaded with a second locking pin arranged in the Z direction. The end of the first locking pin facing the inside of the first cylinder groove abuts against the outer surface of the cylinder, and the end of the second locking pin facing the inside of the second cylinder groove abuts against the outer surface of the horizontal pipe.

[0012] As another improvement of this application, the positioning plate includes a plate body fixedly installed on the outer end face of the horizontal tube. The outer end face of the plate body facing away from the sleeve and the outer end face facing the sleeve are respectively provided with a first contact surface and a second contact surface. The first contact surface and the second contact surface are both perpendicular to the X-axis.

[0013] As a further improvement to this application, a magnetic block is fixedly installed on the outer end face of the plate away from the horizontal tube. When the first contact surface contacts the rail, the magnetic block contacts the rail.

[0014] As a further improvement to this application, a magnetic block is fixedly installed on the outer end face of the plate away from the horizontal tube. When the second contact surface contacts the rail, the magnetic block contacts the rail.

[0015] As a further improvement of this application, the end of the pressure pin facing the inside of the connecting block abuts against the outer surface of the horizontal tube, and the end face of the pressure pin in contact with the horizontal tube is set as a rough surface.

[0016] Compared with existing technologies, the advantages of this utility model are: 1. In this method, when measuring rails, a laser plumb bob emits a laser beam downwards from the bottom, forming a clear spot on the target surface. The measuring fixture is moved outside the horizontal tube to stabilize the laser plumb bob. The vertical projection point of the spot is aligned with the positioning point to be measured. The distance is measured by reading the scale value on the horizontal tube at this time. The laser has good collimation, eliminating the need for human visual positioning, and can objectively and quickly locate the position. At the same time, the accuracy can reach the millimeter level, making the measurement more accurate.

[0017] 2. This solution uses a magnetic block fixedly installed on the outer end face of the plate away from the horizontal tube. When the first or second contact surface comes into contact with the rail, the magnetic block is firmly attached to the inner or outer side of the rail, so as to ensure that the horizontal tube and the rail remain perpendicular during the measurement operation, resulting in a more stable positioning effect. It also eliminates the need for the operator to support it, making it convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention; Figure 2 This is an exploded structural diagram of the first embodiment of the present invention; Figure 3 This utility model Figure 2 Another perspective structural diagram; Figure 4 This is a schematic diagram of the vertical adjustment unit in a cut-out state in the first embodiment of the present invention; Figure 5 This is a partial structural diagram of the first embodiment of the present invention in the connected and cut-out state; Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This utility model Figure 5 Enlarged structural diagram at point B; Figure 8 This is an exploded structural diagram of the second embodiment of the present invention; Figure 9 This is a schematic diagram of the vertical adjustment unit in a cross-sectional state according to the second embodiment of this utility model.

[0019] Explanation of the labels in the diagram: 1. Base support unit; 101. Counterweight base plate; 102. Support; 103. Mounting hole; 104. Mounting pin; 2. Vertical adjustment unit; 21. Column; 211. Column body; 212. Fixing hole; 22. Sleeve; 221. Cylinder body; 222. First cylinder groove; 223. Second cylinder groove; 224. First locking pin; 225. Second locking pin; 3. Horizontal measuring unit; 31. Horizontal tube; 32. Positioning plate; 321. Plate body; 322. First mating surface; 323. Second mating surface; 324. Magnetic block; 33. Measuring clamp; 331. Moving part; 3311. Connecting block; 3312. Pressing pin; 332. Thread wheel; 333. Laser plumb bob; 4. Bubble level. Detailed Implementation

[0020] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0021] First implementation method: Please see Figure 1 and Figure 6 As shown, the adjustable bracket-type beam eccentricity measuring device includes a vertical adjustment unit 2 and a horizontal measuring unit 3 perpendicular to the vertical adjustment unit 2. The vertical adjustment unit 2 includes a column 21 and a sleeve 22 movably connected to the outside of the column 21, and the sleeve 22 can move along the Z direction outside the column 21. The bottom end of the column 21 is connected to a base support unit 1 that supports the vertical adjustment unit 2. Meanwhile, the horizontal measuring unit 3 includes a horizontal tube 31 perpendicular to the column 21, and the horizontal tube 31 is connected to the column 21 through the sleeve 22. The horizontal tube 31 can move along the X direction inside the sleeve 22, as detailed below. Figure 1 As shown, the horizontal measuring unit 3 can be moved along the X or Z direction outside the column 21 via the sleeve 22, thereby adjusting the installation position of the positioning plate 32; Furthermore, the base support unit 1 includes a counterweight base plate 101 and a support 102 fixedly installed on the top surface of the counterweight base plate 101, specifically as follows: Figure 5As shown, the support 102 has an installation hole 103 on its outer end face, and an installation pin 104 is provided inside the installation hole 103. The outer surface of the installation pin 104 is fixedly provided with a convex thread structure, and the inner surface of the installation hole 103 is provided with a concave thread structure that mates with the installation pin 104. Meanwhile, the column 21 includes a column body 211 and a fixing hole 212 opened on the outer end face of the column body 211. The column body 211 is inserted into the top of the counterweight base plate 101 through the support 102. The fixing hole 212 is provided to mate with the installation hole 103. The installation pin 104 forms a threaded connection with the column body 211 through the fixing hole 212. The installation pin 104 plays a role in fixing the column body 211 and the support 102. The counterweight base plate 101 and the column 211 can be flexibly disassembled and assembled. Combination Figure 1 and Figure 5 As shown in the figure, in this embodiment, the column 211 is made of 20mm×20mm steel square tube, and the counterweight base plate 101 is made of 4mm thick galvanized steel plate with a size of 300mm×300mm to increase the contact area with the ground and prevent it from tipping over during the measurement process. Specific examples Figure 4 As shown, the sleeve 22 includes a cylindrical body 221, and the inside of the cylindrical body 221 is provided with a first cylindrical groove 222 arranged along the Z direction. The inner diameter of the first cylindrical groove 222 is adapted to the column 211. The column 211 is slidably connected to the cylindrical body 221 through the first cylindrical groove 222. The outer end face of the cylindrical body 221 is threaded with a first locking pin 224 arranged along the X direction. The column 211 is slidably sleeved on the outside of the column 211 through the first cylindrical groove 222 and can move along the Z direction on the outside of the column 211. By rotating the first locking pin 224 clockwise, the end of the first locking pin 224 facing the inside of the first cylindrical groove 222 abuts against the outer surface of the cylindrical body 221, thereby locking and fixing the cylindrical body 221. Furthermore, the interior of the cylindrical body 221 is provided with a second cylindrical groove 223 arranged along the X direction, and the inner diameter of the second cylindrical groove 223 is adapted to the horizontal pipe 31. The horizontal pipe 31 is slidably connected to the cylindrical body 221 through the second cylindrical groove 223. At the same time, the outer end face of the cylindrical body 221 is threadedly connected with a second locking pin 225 arranged along the Z direction, as detailed below. Figure 4 As shown, the column 211 is slidably sleeved on the outside of the horizontal tube 31 through the second cylindrical groove 223. The horizontal tube 31 can move along the X direction inside the second cylindrical groove 223. By rotating the second locking pin 225 clockwise, the end of the second locking pin 225 facing the inside of the second cylindrical groove 223 abuts against the outer surface of the horizontal tube 31, thereby locking and fixing the horizontal tube 31. Furthermore, the level tube 31 is made of 20mm×20mm aluminum alloy square tube, and a bubble level 4 is fixedly installed on the outer end face of the level tube 31. The bubble level 4 is used to indicate whether the installation position of the level tube 31 is horizontal. In this embodiment, the bubble level 4 can be an HL-6015 strip level. Specific examples Figure 7 As shown, the positioning plate 32 includes a plate body 321 fixedly installed on the outer end face of the horizontal tube 31. The outer end face of the plate body 321 facing away from the sleeve 22 and the outer end face facing the sleeve 22 are respectively provided with a first contact surface 322 and a second contact surface 323. Both the first contact surface 322 and the second contact surface 323 are perpendicular to the X-axis. Figure 6 and Figure 7 As shown, during measurement, the first contact surface 322 and the second contact surface 323 are in contact with the outer or inner side of the rail to ensure that the horizontal tube 31 remains perpendicular to the centerline of the rail during the measurement operation. Specific examples Figure 2 As shown, the horizontal measuring unit 3 also includes a positioning plate 32 fixedly installed at the outer end of the horizontal tube 31 and a measuring clamp 33 movably connected to the outside of the horizontal tube 31, combined with Figure 2 and Figure 3 As shown, the measuring fixture 33 includes a movable part 331, and the movable part 331 includes a connecting block 3311 slidably connected to the outer surface of the horizontal tube 31. A pressure pin 3312 is provided through the outer end face of the connecting block 3311, and the pressure pin 3312 is threadedly connected to the connecting block 3311. The connecting block 3311 can slide on the outside of the horizontal tube 31. By rotating the pressure pin 3312 clockwise, the end of the pressure pin 3312 facing the inside of the connecting block 3311 abuts against the outer surface of the horizontal tube 31, which can lock the connecting block 3311. Furthermore, the end face of the pressure pin 3312 that contacts the horizontal tube 31 is set as a rough surface to increase static friction and improve the locking effect. Specific examples Figure 3 As shown, a spool 332 is fixedly installed at the top of the connecting block 3311. Meanwhile, the measuring fixture 33 also includes a laser plumb bob 333 connected to the spool 332 via a traction rope. The spool 332 is used to load and unload the laser plumb bob 333, and the laser plumb bob 333 keeps the traction rope vertical under the action of gravity. A scale bar is provided on the outer surface of the horizontal tube 31. Combination Figure 6 and Figure 9As shown, during measurement, a laser beam is emitted downward from the bottom of the laser plumb bob 333, forming a clear light spot on the target surface. The measuring fixture 33 is slid to the positioning point on the outside of the horizontal tube 31. After the laser plumb bob 333 stabilizes, the light spot is the vertical projection point to be measured. The distance is measured by reading the scale value on the horizontal tube 31 at this time. The laser has good collimation, does not require human visual positioning, can be objectively and quickly positioned, and the accuracy can reach the millimeter level. Working principle: When using this adjustable bracket-type beam eccentricity measuring device, first place the base support unit 1 on a horizontal ground, and then... Figure 1 and Figure 4 As shown, adjust the connection position of the horizontal tube 31 inside the sleeve 22 so that the plate 321 is in contact with the outer or inner side of the rail through the first contact surface 322 or the second contact surface 323. Rotate the second locking pin 225 to lock the horizontal tube 31. Adjust the height position of the sleeve 22 outside the column 21 so that the horizontal tube 31 is at a suitable height. At the same time, observe the bubble level 4 to keep the horizontal tube 31 horizontal. By rotating the first locking pin 224, lock the cylinder 221 so that the horizontal tube 31 is rigidly fixed to the column 211 to ensure that the horizontal tube 31 is perpendicular to the centerline of the rail during the measurement operation. Specific examples Figure 3 and Figure 6 As shown, when measuring the rail, a laser plumb bob 333 emits a laser beam downwards from its bottom, forming a clear spot on the target surface. The measuring fixture 33 is moved outside the horizontal tube 31 to stabilize the laser plumb bob 333. The vertical projection point of the spot is aligned with the positioning point to be measured. The distance is measured by reading the scale value on the horizontal tube 31 at this time. The laser has good collimation, eliminating the need for human visual positioning, and can provide objective and rapid positioning. At the same time, the accuracy can reach the millimeter level, making the measurement more accurate.

[0022] Second implementation method: Please see Figure 7 and Figure 8 As shown in the diagram, based on the first embodiment, in this embodiment, a magnetic block 324 is fixedly installed on the outer end face of the plate 321 facing away from the horizontal tube 31, combined with... Figure 6 and Figure 9 As shown, when the first contact surface 322 contacts the rail, the magnetic block 324 contacts the rail; when the second contact surface 323 contacts the rail, the magnetic block 324 contacts the rail. In this embodiment, during measurement, when the first contact surface 322 or the second contact surface 323 is in contact with the inner or outer side of the rail, the magnetic block 324 is firmly attached to the inner or outer side of the rail, ensuring that the horizontal tube 31 remains perpendicular to the rail during measurement, resulting in a more stable positioning effect and eliminating the need for constant support from the operator. The above is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concepts, should be covered within the protection scope of this utility model.

Claims

1. An adjustable bracket-type beam eccentricity measuring device, comprising a vertical adjustment unit (2) and a horizontal measuring unit (3) perpendicularly arranged to the vertical adjustment unit (2), characterized in that: The vertical adjustment unit (2) includes a column (21) and a sleeve (22) movably connected to the outside of the column (21). The sleeve (22) can move along the Z direction outside the column (21). The bottom end of the column (21) is connected to a base support unit (1) that supports the vertical adjustment unit (2). The horizontal measurement unit (3) includes a horizontal tube (31) that is perpendicular to the column (21). The horizontal tube (31) is connected to the column (21) through the sleeve (22). The horizontal tube (31) can move along the X direction inside the sleeve (22). A bubble level (4) is fixedly installed on the outer end face of the horizontal tube (31). The horizontal measuring unit (3) further includes a positioning plate (32) fixedly installed on the outer end of the horizontal tube (31) and a measuring clamp (33) movably connected to the outside of the horizontal tube (31). The measuring clamp (33) includes a moving part (331), and the moving part (331) includes a connecting block (3311) slidably connected to the outer surface of the horizontal tube (31). A pressure pin (3312) is provided through the outer end face of the connecting block (3311), and the pressure pin (3312) is threadedly connected to the connecting block (3311). A spool (332) is fixedly provided at the top of the connecting block (3311). The measuring clamp (33) also includes a laser plumb bob (333) connected to the spool (332) by a traction rope. The spool (332) is used to load and unload the laser plumb bob (333). The laser plumb bob (333) keeps the traction rope vertical under the action of gravity.

2. The adjustable bracket-type beam eccentricity measuring device according to claim 1, characterized in that: The base support unit (1) includes a counterweight base plate (101) and a support (102) fixedly installed on the top surface of the counterweight base plate (101). The outer end face of the support (102) is provided with a mounting hole (103), and a mounting pin (104) is provided inside the mounting hole (103). The outer surface of the mounting pin (104) is fixedly provided with a convex thread structure, and the inner surface of the mounting hole (103) is provided with a concave thread structure that mates with the mounting pin (104).

3. The adjustable bracket-type beam eccentricity measuring device according to claim 2, characterized in that: The column (21) includes a column body (211) and a fixing hole (212) opened on the outer end face of the column body (211). The column body (211) is inserted into the top of the counterweight base plate (101) through the support (102). The fixing hole (212) is configured to cooperate with the mounting hole (103). The mounting pin (104) forms a threaded connection with the column body (211) through the fixing hole (212) and plays a role in fixing the column body (211) and the support (102).

4. The adjustable bracket-type beam eccentricity measuring device according to claim 3, characterized in that: The sleeve (22) includes a cylindrical body (221), and the inside of the cylindrical body (221) is provided with a first cylindrical groove (222) arranged along the Z direction, and the inside of the cylindrical body (221) is provided with a second cylindrical groove (223) arranged along the X direction. The column (211) is slidably connected to the cylindrical body (221) through the first cylindrical groove (222), and the horizontal pipe (31) is slidably connected to the cylindrical body (221) through the second cylindrical groove (223).

5. The adjustable bracket type beam eccentricity measuring device according to claim 4, characterized in that: The outer end face of the cylinder (221) is threaded with a first locking pin (224) arranged in the X direction, and the outer end face of the cylinder (221) is threaded with a second locking pin (225) arranged in the Z direction. The end of the first locking pin (224) facing the inside of the first cylinder groove (222) abuts against the outer surface of the cylinder (221), and the end of the second locking pin (225) facing the inside of the second cylinder groove (223) abuts against the outer surface of the horizontal pipe (31).

6. The adjustable bracket-type beam eccentricity measuring device according to claim 5, characterized in that: The positioning plate (32) includes a plate body (321) fixedly installed on the outer end face of the horizontal tube (31). The outer end face of the plate body (321) facing away from the sleeve (22) and the outer end face facing the sleeve (22) are respectively provided with a first contact surface (322) and a second contact surface (323). The first contact surface (322) and the second contact surface (323) are both perpendicular to the X-axis.

7. The adjustable bracket-type beam eccentricity measuring device according to claim 6, characterized in that: A magnetic block (324) is fixedly installed on the outer end face of the plate (321) away from the horizontal tube (31). When the first contact surface (322) contacts the rail, the magnetic block (324) contacts the rail.

8. The adjustable bracket type beam eccentricity measuring device according to claim 6, characterized in that: A magnetic block (324) is fixedly installed on the outer end face of the plate (321) away from the horizontal tube (31). When the second contact surface (323) contacts the rail, the magnetic block (324) contacts the rail.

9. The adjustable bracket-type beam eccentricity measuring device according to claim 7 or 8, characterized in that: The end of the pressure pin (3312) facing the inside of the connecting block (3311) abuts against the outer surface of the horizontal tube (31), and the end face of the pressure pin (3312) in contact with the horizontal tube (31) is set as a rough surface.

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