Detachable slag hopper rail device for rectangular pipe jacking construction

Abstract

The utility model relates to the field of pipe jacking engineering, in particular to a detachable slag hopper track device for rectangular pipe jacking construction. Comprising a top iron; the pipe joint assembly is composed of a plurality of pipe joints, and one side of the pipe joint assembly makes contact with one side of the jacking iron; the rail assembly is composed of a plurality of rails, rectangular pipes are selected for the rails, the rails of the rail assembly are arranged on the upper portion of the pipe joint assembly, the rails of the rail assembly comprise the long rails and the short rails, the length of the short rails is consistent with the pipe joint width of the pipe joint assembly, the length of the long rails is multiple of the length of the short rails, and the two rail assemblies are symmetrically arranged. By the adoption of the detachable temporary track, the tunneling requirement that a single pipe joint is 1.5 m in length can be met, a single permanent track 6 m in length is used for replacement after propelling is conducted for one cycle period, the number of connectors is reduced by three times, it is guaranteed that a slag trolley runs stably, the failure rate of equipment is reduced, construction efficiency is improved, and meanwhile the maintenance cost of the equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipe jacking engineering, and particularly relates to a detachable residue hopper track device for rectangular pipe jacking construction. BACKGROUND

[0002] Traditional construction method of residue hopper track: in the earth pressure balance type rectangular pipe jacking construction, the earth is excavated by a screw machine into a residue hopper car, the residue hopper car is horizontally transported along the walking track under the residue hopper chassis to a ring-shaped pipe jacking iron, and then the residue soil is hoisted to the ground residue pool by a crawler crane. After each ring pipe section is installed, the residue hopper track is extended once, the track and the pipe section are connected by welding, and each extension is a single ring pipe section length, that is, a joint appears between two pipe sections. Disadvantages of the traditional method: since the number of joints of the walking track under the residue hopper car is large, and the wheel rim of the residue hopper car is shallow, if the joints are not handled properly, when the residue hopper car runs to the joint position of the track, the running torsion force will appear derailing or rail biting phenomenon, the wheel is seriously worn out, causing frequent maintenance and replacement of the wheel, seriously affecting the construction progress, and increasing the construction cost; during the construction process, the wheel may even be separated from the track, causing safety accidents. SUMMARY

[0003] To solve the problems of the prior art, the utility model provides a detachable residue hopper track device for rectangular pipe jacking construction. This device can reduce the number of joints between the walking tracks of the residue hopper car chassis.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A detachable residue hopper track device for rectangular pipe jacking construction, comprising: a pipe jacking iron;

[0006] A pipe section assembly composed of a plurality of pipe sections, the plurality of pipe sections are arranged side by side, and one side of the pipe section assembly is in contact with one side of the pipe jacking iron;

[0007] A track assembly composed of a plurality of tracks, the tracks are selected from rectangular pipes, the tracks of the track assembly are arranged on the upper part of the pipe section assembly, the tracks of the track assembly include long tracks and short tracks, the length of the short tracks is consistent with the width of the pipe sections of the pipe section assembly, the length of the long tracks is a multiple of the length of the short tracks, the number of the track assemblies is two and they are symmetrically arranged, and a track spacing space is formed between adjacent track assemblies.

[0008] The pipe section assembly comprises a first section pipe section, a second section pipe section, a third section pipe section, a fourth section pipe section, a 4n+1 section pipe section, a 4n+2 section pipe section and a 4n+3 section pipe section; one side of the first section pipe section is in contact with one side of the top iron, the other side of the first section pipe section is in contact with one side of the second section pipe section, the other side of the second section pipe section is in contact with one side of the third section pipe section, the other side of the third section pipe section is in contact with one side of the fourth section pipe section, the other side of the fourth section pipe section is in contact with one side of the 4n+1 section pipe section, the other side of the 4n+1 section pipe section is in contact with one side of the 4n+2 section pipe section, and the other side of the 4n+2 section pipe section is in contact with one side of the 4n+3 section pipe section.

[0009] The track assembly comprises:

[0010] Track one, single length 1.3m;

[0011] Track two, short track, length consistent with the length of the first pipe section, single length 1.5m;

[0012] Track three, long track, length 2 times the length of track two, single length 3m;

[0013] Track four, long track, length 4 times the length of track two, single length 6m.

[0014] A detachable slag bucket track device for rectangular pipe construction, further comprising a connecting assembly composed of four steel plates in the shape of "∟", two of which are fixed to the two side walls of one end of the track assembly, and the other two are fixed to the two sides of the other end of the track assembly; the adjacent tracks of the track assembly are connected through the connecting assembly.

[0015] The axes of the adjacent tracks of the track assembly coincide, and the steel plates of one track are connected to the steel plates of the other track through bolt fixation.

[0016] Compared with the prior art, the detachable temporary track can meet the 1.5m long tunneling requirement of a single pipe section, and after one cycle, a single 6m long permanent track is used for replacement, the number of joints is reduced by 3 times, the stable operation of the slag bucket car is ensured, the equipment failure rate is reduced, the construction efficiency is improved, and the equipment maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0018] Figure 1 The present application is a structural schematicFigure One .

[0019] Figure 2 is the structure diagram of the utility model Figure Two .

[0020] Figure 3 is the installation plane diagram of the slag hopper track after the first pipe section of the utility model is lowered into the well.

[0021] Figure 4 is the installation plane diagram of the slag hopper track after the second pipe section of the utility model is lowered into the well.

[0022] Figure 5 is the installation plane diagram of the slag hopper track after the third pipe section of the utility model is lowered into the well.

[0023] Figure 6 is the installation plane diagram of the slag hopper track after the fourth pipe section of the utility model is lowered into the well.

[0024] Figure 7 is the installation plane diagram of the slag hopper track after the 4n+1 (n≥1) pipe section of the utility model is lowered into the well.

[0025] Figure 8 is the installation plane diagram of the slag hopper track after the 4n+2 (n≥1) pipe section of the utility model is lowered into the well.

[0026] Figure 9 is the installation plane diagram of the slag hopper track after the 4n+3 (n≥1) pipe section of the utility model is lowered into the well.

[0027] Figure 10 is the installation plane diagram of the slag hopper track after the 4n+4 (n≥1) pipe section of the utility model is lowered into the well. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail by examples, and the examples are only used to explain the utility model and do not limit the scope of the utility model.

[0029] In the process of earth pressure balance type rectangular pipe jacking machine excavation, the slag hopper track needs to be extended once every time a pipe section is installed, and the detachable temporary slag hopper track is installed on the newly laid pipe section, with the increase of the pipe section, the temporary track of 2 times the length of the single pipe section is replaced, and finally the permanent track of 4 times the length of the pipe section is replaced, and the replaced track can still be used as the temporary track after the extension of each pipe section in the next cycle, and the device reduces the joints of the walking track under the slag hopper chassis.

[0030] A specific detachable slag hopper track device for rectangular pipe construction, comprising: a top iron 100;

[0031] The pipe section assembly 200 is composed of a plurality of pipe sections arranged side by side, and one side of the pipe section assembly 200 is in contact with one side of the top iron 100;

[0032] The track assembly 300 is composed of a plurality of tracks, and the tracks are selected from rectangular pipes. The tracks of the track assembly 300 are arranged on the upper part of the pipe section assembly 200. The tracks of the track assembly 300 include long tracks and short tracks. The length of the short tracks is consistent with the width of the pipe sections of the pipe section assembly 200. The length of the long tracks is a multiple of the length of the short tracks. Specifically, the length of the long tracks is an even multiple of the length of the short tracks, such as 2 times or 4 times. The number of the track assemblies 300 is two and they are symmetrically arranged. A track spacing space is formed between adjacent track assemblies 300. The tracks (rectangular pipes) are temporary auxiliary facilities in the construction process of the top pipe of the pipe section assembly 200, and are not main components. They need to be completely removed before the project is completed and accepted. The tracks (rectangular pipes) mainly bear a large vertical downward pressure and a small lateral pressure from the operation process of the slag car. The fixing between the tracks (rectangular pipes) and the top pipe of the pipe section assembly 200 is achieved by spot welding. In order to facilitate the removal in the later period, the tracks (rectangular pipes) and the pipe section assembly 200 are not suitable for full welding, but spot welding. A steel collar (not shown in the figure) is designed on each top pipe of the pipe section assembly 200. The steel collar is a very thin steel plate embedded on the pipe section. Four welding points are respectively arranged on both sides of the contact part between the track (rectangular pipe) and the steel collar (not shown in the figure) to fix them.

[0033] The pipe section assembly 200 includes a first pipe section 201, a second pipe section 202, a third pipe section 203, a fourth pipe section 204, a fourth n+1 pipe section 205, a fourth n+2 pipe section 206, and a fourth n+3 pipe section 207. One side of the first pipe section 201 is in contact with one side of the top iron 100. The other side of the first pipe section 201 is in contact with one side of the second pipe section 202. The other side of the second pipe section 202 is in contact with one side of the third pipe section 203. The other side of the third pipe section 203 is in contact with one side of the fourth pipe section 204. The other side of the fourth pipe section 204 is in contact with one side of the fourth n+1 pipe section 205. The other side of the fourth n+1 pipe section 205 is in contact with one side of the fourth n+2 pipe section 206. The other side of the fourth n+2 pipe section 206 is in contact with one side of the fourth n+3 pipe section 207. The same applies to the other pipe sections. The pipe section assembly 200 is selected from reinforced concrete pipe sections. The sizes of the pipe sections of the pipe section assembly 200 are consistent.

[0034] The track assembly 300 includes:

[0035] The track one 301 is 1.3 m long, and the track one 301 is selected from a rectangular tube with a size of 70*60*5; that is, the size is 70 mm*60 mm (height*width), and the thickness is 5 mm; the track one 301 is a temporary track; the bottom of the track one 301 is welded and fixed to the upper part of the top iron 100, and the priority is spot welding and fixing.

[0036] The track two 302 is a short track with a length consistent with the length of the first pipe section 201, and the length of the track two 302 is 1.5 m; the track two 302 is selected from a rectangular tube with a size of 70*60*5; that is, the size is 70 mm*60 mm (height*width), and the thickness is 5 mm; the track two 302 is a temporary track.

[0037] The track three 303 is a long track with a length of 2 times the length of the track two 302, and the length of the track three 303 is 3 m; the track three 303 is selected from a rectangular tube with a size of 70*60*5; that is, the size is 70 mm*60 mm (height*width), and the thickness is 5 mm; the track three 303 is a temporary track.

[0038] The track four 304 is a long track with a length of 4 times the length of the track two 302, and the length of the track four 304 is 6 m; the track four 304 is selected from a rectangular tube with a size of 70*60*5; that is, the size is 70 mm*60 mm (height*width), and the thickness is 5 mm; the track four 304 is a permanent track; the permanent track is not removed before the project is completed and accepted.

[0039] The length of the pipe section of the project is 1.5 m / section, the temporary track is a rectangular tube with a length of 1.5 m and a rectangular tube with a length of 3 m, and the permanent fixed track is a rectangular tube with a length of 6 m.

[0040] A detachable slag bucket track device for rectangular pipe jacking construction also includes a connecting assembly 400 composed of a steel plate 401 in the shape of "∟", the steel plate 401 can be selected from an angle steel, the number of the steel plate 401 is four, the width of the steel plate 401 is 50 mm, and the thickness is 10 mm, wherein two steel plates 401 are respectively fixed to the two side walls of one end of the track assembly 300, the two steel plates 401 are symmetrically arranged, and the other two are respectively fixed to the two sides of the other end of the track assembly 300, and the two steel plates 401 are symmetrically arranged; the tracks between the adjacent track assemblies 300 are connected through the connecting assembly 400; the other end adopts an angle steel with an angle of 80*10 as a connecting plate, and the steel plate 401 is welded with the track of the track assembly 300.

[0041] The axes of the adjacent tracks of the track assembly 300 coincide, and the steel plates 401 of one track are connected with the steel plates 401 of the other track by means of bolt fixation; bolt holes are formed in the steel plates 401, the diameter of the bolt holes is 22 mm, the bolts 402 pass through the corresponding bolt holes of the two steel plates 401, and then the corresponding steel plates 401 are fixed by means of nuts; the model of the bolts 402 is M20x60 (8.8 level). Working principle: the temporarily installed single 1.5 m long and single 3 m long temporary track is replaced by a 6 m long permanent track by means of point welding connection between the temporarily installed track and the steel sleeve ring (not shown in the figure) pre-buried in the pipe section of the pipe jacking pipe, and the track is welded with a bolt connection plate of ∠50x6 on both sides of all joint parts, the longitudinal direction between the tracks is mechanically connected by means of M20 bolts, the conversion between the temporary track and the permanent track is facilitated, the number of joints between the tracks is reduced, the phenomena of rail sticking and derailment during the driving of the slag hopper car are greatly reduced, the lateral friction resistance of the slag hopper car is reduced, the friction noise of the wheels and the track is reduced, and the stability and safety of the slag hopper car operation can be effectively improved. Operation points: (1) the rectangular pipe serving as the walking track should have sufficient strength, stability, durability and appropriate elasticity, so as to ensure stable and safe operation. (2) the size of the walking track of the slag hopper car must meet the width requirement of the inner wheel spacing of the slag hopper car, and must meet the load requirement of the slag hopper car under full load. According to the wheel spacing of the slag hopper car, the net distance between the tracks is strictly controlled. (3) the walking track adopts a rectangular pipe, the end of the rectangular pipe should be flat, without abruptness and burrs; the joint seams between the tracks need to be tight. (4) the weld between the rectangular pipe and the angle steel should be full, and the torsion and strength between the bolts should meet the requirements. Through the scheme, the following purposes can be achieved: (1) the detachable structure is arranged, the single-section-length temporary track can be quickly removed, 6 m is a cycle period (i.e. every 4-section-length pipe section is excavated), and the temporary track can be recycled in the next cycle period after being removed. (2) the track with a large number of joints (single ring pipe section length) is replaced by a longer temporary track, the number of joints between the tracks is reduced, the joints between the tracks are reduced, and the flatness between the tracks is ensured as much as possible. (3) the wear between the wheels of the slag hopper car and the track is reduced, the service life of the wheels, the track and the walking motor is increased, and the purpose of cost saving is achieved.

[0042] The overpass passage of a certain civil defense project is constructed by using a soil pressure balance type rectangular pipe jacking machine, the pipe section has an appearance size of 6x4.3x1.5 m, the pipe section wall thickness is 0.5 m, and C50P6 concrete is poured. The utility model has been successfully applied in the project and good economic effects have been achieved.

[0043] Specific implementation scheme:

[0044] Before the pipe jacking, two tracks of 1.3m long are welded on the top iron respectively. With the pipe jacking machine, the pipe section is continuously increased, and the slag bucket walking track is extended section by section. The implementation schemes under different working conditions are as follows.

[0045] Working condition 1, after jacking 1.5m:

[0046] ① Place the first pipe section.

[0047] ② Weld a single track of 1.3m long on the top iron.

[0048] ③ After the first pipe section is placed in the well, a single temporary track of 1.5m long is welded on the pipe section, and the 1.5m long track is mechanically connected with the 1.3m long track on the top iron.

[0049] Working condition 2, after jacking 3m:

[0050] ① Place the second pipe section.

[0051] ② Remove the single temporary track of 1.5m long on the first pipe section.

[0052] ③ Place a single temporary track of 3m long, and mechanically connect it with the 1.3m long track on the top iron.

[0053] Working condition 3, after jacking 4.5m:

[0054] ① Place the third pipe section.

[0055] ② Place a single temporary track of 1.5m long on the third pipe section, and mechanically connect it with the 3m long temporary tracks on the first and second pipe sections.

[0056] Working condition 4, after jacking 6m:

[0057] 1. Place the fourth pipe section.

[0058] 2. Remove the single temporary track of 1.5m long placed on the third pipe section, and the single temporary track of 3m long on the first and second pipe sections.

[0059] 3. Place a single permanent track of 6m long on the first, second, third and fourth pipe sections, and mechanically connect it with the temporary track on the top iron.

[0060] Working condition 5, after jacking 7.5m, (4n+1)×1.5m (where n≥1):

[0061] 1. Place the fifth pipe section.

[0062] 2. Place a single temporary track of 1.5m long on the fifth pipe section, and connect it with the single permanent track of 6m long on the first, second, third and fourth pipe sections.

[0063] 3. Similarly, the 9th, 13th, 17th (i.e. 4n+1, n≥2) pipe sections are connected with the 4thn, 4n-1, 4n-2, 4n-3 pipe sections respectively after being lowered into the well.

[0064] After the 9m, (4n+2) x 1.5m (where n≥1) is jacked in, the working condition 6 is:

[0065] 1. The 6th pipe section is placed.

[0066] 2. The 1.5m long rail on the 5th pipe section is removed.

[0067] 3. The 3m long temporary rail is placed on the 5th and 6th pipe sections and connected with the 6m long permanent rail on the 4th pipe section.

[0068] 4. Similarly, the 10th, 14th, 18th (i.e. 4n+2, n≥2) pipe sections are connected with the 4n+1 pipe section respectively after being lowered into the well.

[0069] 5. The 3m long temporary rail is placed on the 4n+1 and 4n+2 pipe sections and connected with the 6m long permanent rail on the 4n pipe section.

[0070] After the 10.5m, (4n+3) x 1.5m (where n≥1) is jacked in, the working condition 7 is:

[0071] 1. The 7th pipe section is placed.

[0072] 2. The 1.5m long temporary rail is placed on the 7th pipe section and connected with the 3m long temporary rail on the 5th and 6th pipe sections.

[0073] 3. Similarly, the 11th, 15th, 19th (i.e. 4n+3, n≥2) pipe sections are connected with the 4n+1 and 4n+2 pipe sections respectively after being lowered into the well. The 3m long temporary rail is placed on the 4n+3 pipe section and connected with the 3m long temporary rail on the 4n+2 and 4n+1 pipe sections.

[0074] After the 12m, (4n+4) x 1.5m (where n≥1) is jacked in, the working condition 8 is:

[0075] 1. The 8th pipe section is placed.

[0076] 2. The 1.5m long temporary rail placed on the 7th pipe section and the 3m long temporary rail on the 5th and 6th pipe sections are removed.

[0077] 3. The 6m long permanent rail is placed on the 5th, 6th, 7th and 8th pipe sections and connected with the permanent rail on the 1st, 2nd, 3rd and 4th pipe sections.

[0078] 4. Similarly, the 12th, 13th and 14th pipe sections (4n+4, n≥2) are removed after being lowered into the well, and 1.5m long temporary tracks on the 4n+3 section and 3m long temporary tracks on the 4n+1 and 4n+2 sections are removed. A single 6m long temporary track is placed on the 4n+, 4n+2, 4n+3 and 4n+4 sections, and is connected to the single 6m long permanent track on the 4n, 4n-1, 4n-2 and 4n-3 sections.

[0079] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship of the device or equipment in the normal use, and are not indicative or suggestive of the device or element must have a particular orientation, constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application in this respect.

[0080] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A detachable residue bucket track device for rectangular pipe construction, characterized in that, It includes: The top iron; The pipe joint assembly is composed of a plurality of pipe joints, and the plurality of pipe joints are arranged side by side. One side of the pipe joint assembly is in contact with one side of the top iron. The track assembly is composed of a plurality of tracks, and the track is selected from a rectangular tube. The tracks of the track assembly are arranged on the upper part of the pipe joint assembly. The tracks of the track assembly include long tracks and short tracks. The length of the short track is consistent with the width of the pipe joint of the pipe joint assembly. The length of the long track is a multiple of the length of the short track. The number of track assemblies is two and is symmetrically arranged. The track spacing space is formed between adjacent track assemblies.

2. The detachable bucket rail device for rectangular pipe construction according to claim 1, characterized in that, The pipe joint assembly includes a first pipe joint, a second pipe joint, a third pipe joint, a fourth pipe joint, a fourth n+1 pipe joint, a fourth n+2 pipe joint, and a fourth n+3 pipe joint. One side of the first pipe joint is in contact with one side of the top iron. The other side of the first pipe joint is in contact with one side of the second pipe joint. The other side of the second pipe joint is in contact with one side of the third pipe joint. The other side of the third pipe joint is in contact with one side of the fourth pipe joint. The other side of the fourth pipe joint is in contact with one side of the fourth n+1 pipe joint. The other side of the fourth n+1 pipe joint is in contact with one side of the fourth n+2 pipe joint. The other side of the fourth n+2 pipe joint is in contact with one side of the fourth n+3 pipe joint.

3. The detachable bucket rail device for rectangular pipe construction according to claim 1, characterized in that, The track assembly includes: Track one, single length 1.3m; Track two, short track, length consistent with the length of the first pipe joint, single length 1.5m; Track three, long track, length is 2 times the length of track two, single length 3m; Track four, long track, length is 4 times the length of track two, single length 6m.

4. The detachable bucket rail device for rectangular pipe construction of claim 1, wherein, It also includes a connecting assembly composed of four "∟" shaped steel plates. Two of the steel plates are fixed to the two side walls at one end of the tracks of the track assembly. The two steel plates are symmetrically arranged. The other two are fixed to the two sides at the other end of the tracks of the track assembly. The two steel plates are symmetrically arranged. The adjacent tracks of the track assembly are connected by the connecting assembly.

5. The detachable bucket rail device for rectangular pipe construction of claim 4, wherein, The axes of the adjacent tracks of the track assembly coincide. The steel plates of one track are connected to the steel plates of the other track by bolt fixation.

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