An in-I-beam crawling type overbreak and underbreak control scale and its using method

Abstract

The present invention belongs to the technical field of tunnel construction, and particularly relates to a crawler-type overbreak and underbreak control scale inside an I-beam and a using method thereof. It includes a housing; a spring telescopic device connected to the outer wall of the housing; a main pipe connected to the outer wall of the housing, and an inner pipe is slidably connected to the main pipe. A spring is sleeved and connected to the main pipe, and the other end of the spring is connected to the inner pipe. The main pipe, the spring and the inner pipe form a spring telescopic device; a traveling mechanism; one end of the inner pipe is connected to a wheel frame, and a traveling wheel is rotatably connected to the wheel frame; a longitudinal scale; the longitudinal scale is arranged along the axial direction of the housing and is connected to the housing. A circumferential scale; the circumferential scale is sleeved and connected to the longitudinal scale. The structure of the present invention is simple and the operation is convenient. One person can operate it, which is convenient and fast, improves work efficiency and can ensure the construction quality of overbreak and underbreak.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and particularly relates to a crawler-type over-excavation and under-excavation control scale inside an I-beam and a using method thereof. Background Technique

[0002] When a tunnel is excavated by a roadheader, it is difficult to control the over-excavation and under-excavation of the surrounding rock during excavation. There is no operating platform during excavation, and the over-excavation and under-excavation conditions cannot be measured in time. The space is limited during excavation, and measuring instruments cannot be used for measurement, resulting in poor quality control of over-excavation and under-excavation after excavation, and accurate control cannot be measured during the construction process. Summary of the Invention

[0003] In order to solve the problems existing in the above-mentioned prior art, a crawler-type over-excavation and under-excavation control scale inside an I-beam and a using method thereof are provided. By manually using an operating rod to walk inside the I-beam, the circumferential scale ruler sweeps across the surrounding rock surface, and the over-excavation and under-excavation conditions can be judged.

[0004] The technical solution adopted by the invention to solve its technical problems is:

[0005] This technical solution provides a crawler-type over-excavation and under-excavation control scale inside an I-beam, including:

[0006] A housing;

[0007] A spring telescopic device connected to the outer wall of the housing; a main pipe is connected to the outer wall of the housing, an inner pipe is slidably connected to the main pipe, a spring is sleeved and connected to the main pipe, and the other end of the spring is connected to the inner pipe. The main pipe, the spring and the inner pipe form the spring telescopic device;

[0008] A traveling mechanism; one end of the inner pipe is connected to a wheel frame, and traveling wheels are rotatably connected to the wheel frame;

[0009] A longitudinal scale ruler; the longitudinal scale ruler is arranged along the axial direction of the housing and is connected to the housing.

[0010] A circumferential scale ruler; the circumferential scale ruler is sleeved and connected to the longitudinal scale ruler.

[0011] Preferably, it further includes a control mechanism, and the control mechanism includes a wing plate and a control rod; the wing plate is connected to the housing, and a through hole is opened on the wing plate; the top of the control rod has a hook, and the hook is detachably inserted into the through hole for pushing the housing to move.

[0012] Preferably, the longitudinal scale ruler is a pull-out ruler, forming an adjustable-length telescopic structure.

[0013] Preferably, one end of the circumferential scale ruler is connected with a sleeve, and the sleeve is sleeved on the longitudinal scale ruler and can slide along the length direction of the longitudinal scale ruler; a locking device is connected to the sleeve, and the locking device is a setscrew for positioning the position of the sleeve.

[0014] Preferably, the circumferential scale ruler is in the structure of a flexible ruler.

[0015] Preferably, a color marking area is provided on the circumferential scale ruler.

[0016] Preferably, a socket is arranged inside the housing, and a central hole for inserting the longitudinal scale ruler is opened in the center of the socket.

[0017] Preferably, one end of the socket is connected with a strong magnet, and the strong magnet is arranged inside the housing.

[0018] The present invention also provides a method for using the over-excavation and under-excavation control ruler for crawling inside the I-beam, which includes the following steps:

[0019] Step 1, according to the preliminary determination of the under-excavation position, the position of the circumferential scale ruler can be selectively determined on the longitudinal scale ruler, and then the circumferential scale ruler is fixed to ensure the position is fixed;

[0020] Step 2, place the traveling mechanism on the housing into the I-beam, and the traveling wheels are closely attached to the inner wall of the I-beam through the spring telescopic device;

[0021] Step 3, manually use the operating rod to make the housing travel inside the I-beam;

[0022] Step 4, the circumferential scale ruler sweeps across the surrounding rock surface, and the over-excavation and under-excavation conditions are judged through the circumferential scale ruler.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. When the device is in use, by manually using the operating rod, the housing travels inside the I-beam, and the circumferential scale ruler sweeps across the surrounding rock surface. According to the scale values, the over-excavation and under-excavation conditions can be judged, and the device can meet the over-excavation and under-excavation measurement requirements under different excavation advances.

[0025] 2. The specific position can be displayed through the longitudinal scale ruler, and the over-excavation and under-excavation data can be displayed through the circumferential scale ruler; the longitudinal and circumferential scale rulers can accurately position and measure; the strong magnet ensures the stability of the traveling device, and one person's operation can meet the measurement on the full-ring excavation surface of the tunnel. After measurement, the under-excavated part can be cut in time to ensure the construction quality of over-excavation and under-excavation. The operation is simple, and the control of over-excavation and under-excavation brings cost benefits, safety benefits, quality benefits and social benefits.

[0026] 3. The use of this device can repeatedly check the overbreak and underbreak, ensuring that the underbreak can be properly handled. When excavating with a roadheader, the space is small, and traditional measurement is time-consuming and laborious. The present invention is applicable to measurement. It can be operated by one person, which is convenient and fast, improving work efficiency and ensuring the quality of overbreak and underbreak. Brief Description of the Drawings

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0028] Figure 1 is a top view of the structure of the present invention.

[0029] Figure 2 is Figure 1 a partially enlarged view of the structure of the present invention in

[0030] Figure 3 a side view of the structure of the present invention.

[0031] Figure 4 is Figure 3 a partially enlarged view of the structure of the present invention in

[0032] Figure 5 is a front view of the cooperation between the housing, the spring telescopic structure and the I-beam.

[0033] Figure 6 is a schematic diagram of the structure of the operating rod.

[0034] Figure 7 is a schematic diagram of the connection relationship of the spring telescopic structure.

[0035] Description of the reference numerals:

[0036] 1 housing; 11 wing plate; 12 socket; 2 traveling wheel; 21 wheel frame; 3 strong magnet; 4 spring telescopic device; 41 main pipe; 42 inner pipe; 43 spring; 5 I-beam; 6 longitudinal scale; 7 circumferential scale; 71 sleeve; 8 locking device; 9 operating rod; 91 hook. Detailed Description of the Embodiments

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0038] As Figure 1-7 shown, this embodiment provides an overbreak and underbreak control scale that crawls inside an I-beam 5, including a housing 1 and a spring telescopic device connected to the outer wall of the housing 1. Among them, the housing 1 can be a cylindrical structure, such as a round steel pipe, which is convenient for obtaining materials.

[0039] The specific structure of the spring telescopic device is as follows:

[0040] The outer wall of the housing 1 is connected with a main pipe 41. The main pipe 41 is slidably connected with an inner pipe 42, and the inner pipe 42 can slide relative to the main pipe 41. The main pipe 41 is connected with a spring 43, and the other end of the spring 43 is connected with the inner pipe 42. The main pipe 41 and the inner pipe 42 form a spring telescopic device 4.

[0041] The whole device further includes a traveling mechanism for traveling along the inner wall of the I-beam 5. The specific structure is as follows: One end of the inner pipe 42 is connected with a wheel frame 21, and a traveling wheel 2 is rotatably connected to the wheel frame 21. The purpose of setting the spring is to be able to adapt to traveling inside I-beams 5 of different models, or to be able to travel even when encountering deformed I-beams 5.

[0042] The whole device further includes a longitudinal scale 6; the longitudinal scale 6 is arranged along the axial direction of the housing 1 and is connected with the housing 1. The specific connection method: There is an insertion sleeve 12 inside the housing 1, and a central hole for inserting the longitudinal scale 6 is opened in the center of the insertion sleeve 12.

[0043] It further includes a circumferential scale 7; the circumferential scale 7 is sleeved and connected to the longitudinal scale 6. Scale values are set on both the longitudinal scale 6 and the circumferential scale 7. At least one circumferential scale 7 is sleeved on the longitudinal scale 6, and the specific quantity is determined according to the actual on-site situation.

[0044] The longitudinal scale 6 is a pull-out ruler, forming a telescopic structure with adjustable length. The longitudinal scale 6 is similar to the structure of a fishing rod or a telescopic rod and can be pulled out. Because the driving footage is different and the measured longitudinal length is different, dynamic adjustment is required.

[0045] One end of the circumferential scale 7 is connected with a sleeve 71. The sleeve 71 is sleeved on the longitudinal scale 6 and can slide along the length direction of the longitudinal scale 6; a locking device 8 is connected to the sleeve 71. The locking device 8 is a set screw, which is used to position the sleeve 71.

[0046] The circumferential scale 7 is a flexible ruler structure and is rod-shaped. The circumferential scale 7 can be made of rubber material, having a certain hardness but being able to be bent. One end of the circumferential scale 7 sweeps across the surrounding rock surface. When encountering an over-excavated or under-excavated section, it will bend. The over-excavation or under-excavation situation can be judged by the bending position of the circumferential scale 7. It is also possible to set fixed scales according to the settlement allowance of the tunnel to preliminarily judge the over-excavation or under-excavation situation during traveling.

[0047] For the convenience of observation, there is a color marking area on the circumferential scale 7. For example, red paint is applied at a certain scale value or area section, which is more eye-catching and convenient for workers to determine the bending position.

[0048] The entire device further includes a control mechanism, and the control mechanism includes a wing plate 11 and a control rod 9; the wing plate 11 is connected to the housing 1, and through holes are formed in the wing plate 11; the top of the control rod 9 has a hook 91, and the hook 91 is detachably inserted into the through hole. During use, by inserting the hook 91 into the through hole, the control rod 9 is pushed to drive the housing 1 to move.

[0049] The housing 1 is equipped with a strong magnet 3. Specifically, the strong magnet 3 is installed at one end of the socket 12 and is built into the housing 1. The strong magnet 3 adsorbs to the I-beam 5 to play a stabilizing role.

[0050] The present invention also proposes a method for using an I-beam inner crawling type overbreak and underbreak control scale, including the following steps:

[0051] Step 1, according to the preliminary determination of the underbreak position, the position of the circumferential scale 7 can be selectively determined on the longitudinal scale 6, and then the circumferential scale 7 is fixed to ensure the position is fixed.

[0052] Step 2, place the traveling mechanism on the housing 1 into the I-beam 5, and the traveling wheels 2 are closely attached to the inner wall of the I-beam 5 through the spring telescopic device.

[0053] It should be noted that: the I-beam 5 is the I-beam in the initial support of the previous construction cycle, which belongs to the already constructed and arranged structure. The traveling mechanism travels inside the exposed end of the I-beam in the initial support of the previous construction cycle.

[0054] Step 3, manually use the control rod 9 to make the housing 1 travel inside the I-beam 5.

[0055] Step 4, the circumferential scale 7 sweeps across the surrounding rock surface, and the overbreak and underbreak conditions are judged through the circumferential scale 7.

[0056] The following is a detailed introduction:

[0057] After the roadheader excavates and advances according to the measured and lofted contour line, it is necessary to measure the overbreak and underbreak of the cross-section and re-cut the undercut part. When measuring with this device, according to the preliminary determination of the underbreak position, the position of the circumferential scale 7 can be selectively determined on the longitudinal scale 6, and then the circumferential scale 7 is fixed and tightened to ensure fixation. Then place the device inside the I-beam 5, walk inside the I-beam 5 through the control rod 9, and use the strong magnet 3 to adsorb the I-beam 5 to play a stabilizing role. During the walking process, record the overbreak and underbreak data of the rock surface through the circumferential scale 7. Record one ring after walking one ring, and then re-cut the undercut part mechanically to achieve the effect of precisely processing the undercut. This device is applied to the precise measurement before the contour line cutting of the roadheader to achieve fine cutting, with simple and convenient operation for measuring overbreak and underbreak, accurate measurement, and control of tunnel overbreak and underbreak.

[0058] The advantages are as follows:

[0059] When this device is in use, an operator uses the operating rod 9 manually to make the housing 1 move inside the I-beam 5, and the circumferential scale ruler 7 sweeps across the surrounding rock surface. According to the scale values and / or bending conditions, the overbreak and underbreak conditions can be judged. The longitudinal scale ruler 6 can display the specific position, and the circumferential scale ruler 7 shows the overbreak and underbreak data. The strong magnet 3 ensures the stability of the traveling device. One operator can meet the measurement requirements on the full-ring excavation surface of the tunnel. After measurement, the under-excavated part can be cut in time to ensure the construction quality of overbreak and underbreak. The operation is simple, and the control of overbreak and underbreak brings cost benefits, safety benefits, quality benefits and social benefits.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for using a crawling type overbreak and underbreak control scale inside an I-beam, characterized in that, the crawling type overbreak and underbreak control scale inside an I-beam includes: a housing; a spring telescopic device connected to the outer wall of the housing; a main pipe is connected to the outer wall of the housing, an inner pipe is slidably connected to the main pipe, a spring is sleeved and connected to the main pipe, and the other end of the spring is connected to the inner pipe. The main pipe, the spring and the inner pipe form the spring telescopic device; a traveling mechanism; one end of the inner pipe is connected to a wheel frame, and traveling wheels are rotatably connected to the wheel frame; a longitudinal scale; the longitudinal scale is arranged along the axial direction of the housing and is connected to the housing; a circumferential scale; the circumferential scale is sleeved and connected to the longitudinal scale. The circumferential scale is a flexible ruler structure, which is rod-shaped, has a certain hardness and can be bent. One end of the circumferential scale sweeps across the surrounding rock surface. When encountering an overbreak or underbreak section, it will bend, and the overbreak and underbreak conditions are judged through the bending position of the circumferential scale; It further includes a control mechanism, and the control mechanism includes a wing plate and a control rod; the wing plate is connected to the housing, and a through hole is opened on the wing plate; the top of the control rod has a hook, and the hook is detachably inserted into the through hole for pushing the housing to move; one end of the circumferential scale is connected with a sleeve, the sleeve is sleeved on the longitudinal scale and can slide along the length direction of the longitudinal scale; a locking device is connected to the sleeve, and the locking device is a setscrew for positioning the position of the sleeve; a plug-in sleeve is arranged inside the housing, and a central hole for inserting the longitudinal scale is opened in the center of the plug-in sleeve; one end of the plug-in sleeve is connected with a strong magnet, and the strong magnet is arranged inside the housing; including the following steps: Step 1, according to the preliminary judgment of the underbreak position, select the position of the circumferential scale on the longitudinal scale, and then fix the circumferential scale to ensure the position is fixed; Step 2, place the traveling mechanism on the housing inside the I-beam, and the traveling wheels are tightly attached to the inner wall of the I-beam through the spring telescopic device; Step 3, manually use the operating rod to make the housing move inside the I-beam; Step 4, the circumferential scale sweeps across the surrounding rock surface, and the overbreak and underbreak conditions are judged through the bending position of the circumferential scale.

2. According to the method for using a crawling type overbreak and underbreak control scale inside an I-beam as described in claim 1, characterized in that, the longitudinal scale is a pull-out scale, forming an adjustable length telescopic structure.

3. According to the method for using a crawling type overbreak and underbreak control scale inside an I-beam as described in claim 2, characterized in that, the circumferential scale has a color marking area.

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