Detachable slag hopper rail device for rectangular pipe jacking construction

Abstract

The invention relates to the field of pipe jacking engineering, in particular to a detachable slag hopper rail 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 invention relates to the field of pipe jacking engineering, and in particular to a detachable slag bucket track device used for rectangular pipe jacking construction. Background Art

[0002] Traditional construction method of bucket track: In the construction of earth pressure balance rectangular jacking pipe, the soil is usually excavated to the bucket truck through a screw machine. The bucket truck is transported horizontally to the annular top iron along the walking track under the bucket chassis, and then the crawler crane is used to lift the slag into the ground slag pool. After each ring of pipe segments is installed, the bucket track is extended once. The track and the pipe segment are welded together. Each extension is the length of a single ring of pipe segments, that is, there will be a joint between the two pipe segments. Disadvantages of traditional methods: Due to the large number of walking track joints at the bottom of the bucket truck and the shallow wheel rims of the bucket truck, if the joints are not handled properly, when the bucket truck runs to the track joint position, the driving torque will cause derailment or rail gnawing. The serious wear of the wheels will cause frequent repairs and replacement of wheels, which will seriously affect the construction progress and increase the construction cost. During the construction process, it may even cause the wheels to detach from the track, causing safety accidents. Summary of the invention

[0003] In order to solve the problems of the prior art, the present invention provides a detachable bucket track device for rectangular pipe jacking construction, which can reduce the number of joints between the running tracks of the bucket truck chassis.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A detachable slag bucket track device for rectangular pipe jacking construction, comprising: a jacking iron; The pipe segment assembly is composed of a plurality of pipe segments, the plurality of pipe segments are arranged side by side, and one side of the pipe segment assembly contacts one side of the top iron; The track assembly is composed of multiple tracks. The tracks are made of rectangular tubes. The tracks of the track assembly are arranged on the upper part of the pipe segment assembly. The tracks of the track assembly include long tracks and short tracks. The length of the short track is consistent with the pipe segment width of the pipe segment assembly. The length of the long track is a multiple of the length of the short track. There are two track assemblies and they are symmetrically arranged. A track gauge space is formed between adjacent track assemblies.

[0005] The pipe joint assembly includes the 1st pipe joint, the 2nd pipe joint, the 3rd pipe joint, the 4th pipe joint, the 4n+1th pipe joint, the 4n+2th pipe joint and the 4n+3th pipe joint; one side of the 1st pipe joint contacts one side of the top iron, the other side of the 1st pipe joint contacts one side of the 2nd pipe joint, the other side of the 2nd pipe joint contacts one side of the 3rd pipe joint, the other side of the 3rd pipe joint contacts one side of the 4th pipe joint, the other side of the 4th pipe joint contacts one side of the 4n+1th pipe joint, the other side of the 4n+1th pipe joint contacts one side of the 4n+2th pipe joint, and the other side of the 4n+2th pipe joint contacts one side of the 4n+3th pipe joint. The track assembly comprises: Track 1, single length is 1.3m; Track 2 is a short track, and its length is the same as the length of the first pipe section. The length of a single track is 1.5m. Track 3 is a long track, which is twice as long as Track 2. The length of a single track is 3m. Track 4 is a long track, which is 4 times the length of Track 2. The length of a single track of Track 4 is 6m.

[0006] A detachable slag bucket track device for rectangular jacking construction also includes a connecting assembly, which is composed of "∟"-shaped steel plates. There are four steel plates, two of which are respectively fixed to the two side walls of one end of the track of the track assembly, and the two steel plates are symmetrically arranged, and the other two are respectively fixed to the two sides of the other end of the track of the track assembly, and the two steel plates are symmetrically arranged; adjacent tracks of the track assembly are connected by the connecting assembly.

[0007] The axes of adjacent tracks of the track assembly coincide with each other, and the steel plate of one track is connected to the steel plate of another track by bolts.

[0008] Compared with the prior art, the beneficial effects of the invention are: the use of this detachable temporary track can meet the excavation requirements of a single pipe section of 1.5m in length, and it can be replaced with a single 6m long permanent track after one cycle. The number of joints is reduced by 3 times, ensuring the smooth operation of the dump truck, reducing the failure rate of the equipment, improving the construction efficiency, and reducing the cost of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0010] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0011] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0012] Figure 3 It is a plan view of the installation of the slag bucket track after the first pipe section of the present invention is lowered into the well.

[0013] Figure 4 It is a plan view of the installation of the hopper track after the second pipe section of the present invention is lowered into the well.

[0014] Figure 5 It is a plan view of the installation of the hopper track after the third pipe section of the present invention is lowered into the well.

[0015] Figure 6 It is a plan view of the installation of the hopper track after the fourth pipe section of the present invention is lowered into the well.

[0016] Figure 7 It is a plan view of the installation of the bucket track after the 4n+1 (n≥1) pipe section is lowered into the well according to the present invention.

[0017] Figure 8 It is a plan view of the installation of the bucket track after the 4n+2 (n≥1) pipe section is lowered into the well according to the present invention.

[0018] Fig. 9 It is a plan view of the installation of the bucket track after the 4n+3 (n≥1) pipe section is lowered into the well according to the present invention.

[0019] Fig.10 It is a plan view of the installation of the bucket track after the 4n+4 (n≥1) pipe section is lowered into the well according to the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below by examples. The examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0021] During the excavation process of the earth pressure balance rectangular pipe jacking machine, the bucket truck transport track needs to be extended every time a pipe segment is installed. A detachable temporary bucket track is installed on the newly laid pipe segment. As the number of pipe segments increases, the track of a single pipe segment length is replaced with a temporary track of twice the length of the pipe segment, and finally replaced with a permanent track of four times the length of the pipe segment. The replaced track can still be used for the extended temporary track of each pipe segment in the next cycle. This device reduces the number of joints on the walking track at the bottom of the bucket chassis.

[0022] A specific detachable slag bucket track device for rectangular pipe jacking construction includes: a jacking iron 100; The pipe segment assembly 200 is composed of a plurality of pipe segments, and the plurality of pipe segments are arranged side by side, and one side of the pipe segment assembly 200 contacts one side of the top iron 100; The track assembly 300 is composed of a plurality of tracks. The tracks are rectangular tubes. The tracks of the track assembly 300 are arranged on the upper part of the pipe segment assembly 200. The tracks of the track assembly 300 include a long track and a short track. The length of the short track is consistent with the pipe segment width of the pipe segment assembly 200. The length of the long track is a multiple of the length of the short track. Specifically, the length of the long track is an even multiple of the length of the short track, such as 2 or 4 times the length of the short track. There are two track assemblies 300 and they are symmetrically arranged. A track gauge space is formed between adjacent track assemblies 300. The track (rectangular tube) is a temporary auxiliary facility during the pipe jacking construction process of the pipe segment assembly 200 and is not the main body. Components must be completely removed before the completion and acceptance of the project. The track (rectangular tube) is mainly subjected to a large vertical downward pressure from the operation of the dump truck, and a small lateral pressure. The track (rectangular tube) and the top pipe section of the pipe section assembly 200 are fixed by spot welding. In order to facilitate later removal, full welding should not be used between the track (rectangular tube) and the pipe section assembly 200, but spot welding should be used. A steel sleeve ring (not shown in the figure) is designed on the top pipe section of each pipe section assembly 200. The steel sleeve ring is a very thin steel plate pre-buried on the pipe section. Four welding points are used on both sides of the contact between the track (rectangular tube) and the steel sleeve ring (not shown in the figure) for fixation.

[0023] The pipe joint assembly 200 includes a first pipe joint 201, a second pipe joint 202, a third pipe joint 203, a fourth pipe joint 204, a 4n+1 pipe joint 205, a 4n+2 pipe joint 206 and a 4n+3 pipe joint 207; one side of the first pipe joint 201 contacts one side of the top iron 100, the other side of the first pipe joint 201 contacts one side of the second pipe joint 202, the other side of the second pipe joint 202 contacts one side of the third pipe joint 203, and the The other side of the 3rd pipe section 203 contacts one side of the 4th pipe section 204, the other side of the 4th pipe section 204 contacts one side of the 4n+1th pipe section 205, the other side of the 4n+1th pipe section 205 contacts one side of the 4n+2th pipe section 206, the other side of the 4n+2th pipe section 206 contacts one side of the 4n+3th pipe section 207, and so on; the pipe section assembly 200 uses reinforced concrete pipe sections, and the sizes of the various pipe sections of the pipe section assembly 200 are consistent; The track assembly 300 includes: Track 1 301, single length is 1.3m, Track 1 301 uses rectangular tube, the size of rectangular tube is 70×60×5, that is, the specification is 70mm×60mm (height×width), thickness is 5mm; Track 1 301 is a temporary track; the bottom of Track 1 301 is welded and fixed to the upper part of top iron 100, preferably spot welding; Track 2 302 is a short track, and its length is consistent with the length of the first pipe section 201. The length of a single track 302 is 1.5m. Track 2 302 uses a rectangular tube with a size of 70×60×5, that is, the specification is 70mm×60mm (height×width) and the thickness is 5mm. Track 2 302 is a temporary track; Track 3 303 is a long track, which is twice as long as Track 2 302. The length of a single track 303 is 3m. Track 3 303 uses a rectangular tube with a size of 70×60×5, that is, the specification is 70mm×60mm (height×width) and the thickness is 5mm. Track 3 303 is a temporary track. Track 4 304 is a long track, which is 4 times the length of Track 2 302. The length of a single track 4 304 is 6m. Track 4 304 uses a rectangular tube with a size of 70×60×5, that is, the specifications are 70mm×60mm (height×width) and the thickness is 5mm. Track 4 304 is a permanent track. The permanent track will not be dismantled before the completion and acceptance of the project relative to the temporary track.

[0024] The length of the jacking pipe section of this project is 1.5m / section. The temporary tracks are 1.5m long rectangular tubes and 3m long rectangular tubes, and the permanent fixed tracks are 6m long rectangular tubes.

[0025] A detachable slag bucket track device for rectangular jacking construction also includes a connecting component 400, which is composed of a "∟"-shaped steel plate 401. The steel plate 401 can be an angle steel. There are four steel plates 401. The side width of the steel plate 401 is 50 mm and the thickness is 10 mm. Two of the steel plates 401 are respectively fixed to the two side walls of one end of the track of the track component 300, and the two steel plates 401 are symmetrically arranged. The other two are respectively fixed to the two sides of the other end of the track of the track component 300, and the two steel plates 401 are symmetrically arranged. The adjacent tracks of the track component 300 are connected by the connecting component 400; the other end uses an angle steel of ∠80×10 as a connecting plate, and the steel plate 401 is welded to the track of the track component 300.

[0026] The axes of adjacent tracks of the track assembly 300 coincide, and the steel plates 401 of one track are connected to the steel plates 401 of the other track by bolting; bolt holes are provided on the steel plates 401, and the bolt holes have a diameter of 22 mm. Bolts 402 pass through the corresponding bolt holes of the two steel plates 401, and then the corresponding steel plates 401 are fixed by nuts; the bolt 402 model is M20×60 (grade 8.8). Working principle: The temporary track is spot welded to the steel sleeve ring embedded in the top pipe section (not shown) by setting a detachable screw rod, and then the 6m long permanent track is used to replace the single 1.5m long and single 3m long temporary track installed temporarily. Each track is welded with ∠50×6 bolt connection plates on both sides of all joints. The longitudinal direction between the tracks is mechanically connected with M20 bolts, which is convenient for the conversion between the temporary track and the permanent track. At the same time, the number of joints between the tracks is reduced, which greatly reduces the phenomenon of track jamming and derailment during the driving of the dump truck, reduces the lateral friction resistance of the dump truck, and reduces the friction noise between the wheel and the track, which can effectively improve the stability and safety of the dump truck. Key points for operation: (1) The rectangular tube used as the walking track should have sufficient strength, stability, durability and appropriate elasticity to ensure smooth and safe operation. (2) The specifications and dimensions of the dump truck walking track must meet the width requirements of the inner wheelbase of the dump truck and be able to meet the load requirements when the dump truck is fully loaded. According to the wheelbase of the dump truck, the net spacing between the tracks is strictly controlled. (3) The travel track adopts a rectangular tube, and the end of the rectangular tube must be flat, without protrusions and burrs; the joints between the tracks must be tight. (4) The weld between the rectangular tube and the angle steel must be full, and the torque and strength between the bolts must meet the requirements. This scheme can achieve the following goals: (1) A detachable structure is set up to quickly dismantle the temporary track of a single section length. 6m is a cycle (that is, the length of 4 sections of the tube per excavation), and the temporary track can be recycled in the next cycle after being dismantled. (2) Replace the track with a large number of joints (single-ring tube length) with a longer temporary track, reduce the number of joints between the tracks, reduce the joints between the tracks, and ensure the flatness of the tracks as much as possible. (3) Reduce the wear between the dump wheel and the track, increase the service life of the wheel, track and travel motor, and achieve the purpose of cost saving.

[0027] A certain air defense project street crossing passage was constructed using an earth pressure balance rectangular pipe jacking machine, the pipe section appearance size was 6×4.3×1.5m, the pipe section wall thickness was 0.5m, and C50P6 concrete was used for pouring. The invention has been successfully applied in this project and achieved good economic results.

[0028] Specific implementation plan: Before the start of pipe jacking, two single 1.3m long rails are welded to the jacking iron respectively. As the pipe jacking machine advances, the pipe sections of the jacking pipe continue to increase, and the bucket walking rails are extended section by section. The implementation plans under different working conditions are as follows.

[0029] Working condition 1, after jacking 1.5m: ① Place the first jacking pipe section.

[0030] ②A single rail with a length of 1.3m is welded on the top iron.

[0031] ③ After the first section of the pipe is lowered into the well, a single 1.5m long temporary rail is placed and welded to the pipe section, and the 1.5m long rail is mechanically connected to the 1.3m long rail on the top iron.

[0032] Working condition 2, after 3m of jacking: ① Place the second pipe section.

[0033] ② Remove the single 1.5m long temporary track on the first pipe section.

[0034] ③ Place it on a single 3m long temporary rail and mechanically connect it to the 1.3m long rail on the top iron.

[0035] Condition 3, after 4.5m of jacking: ① Place the third pipe section.

[0036] ② Place a single 1.5m long temporary rail on the 3rd pipe section and mechanically connect it to the 3m long temporary rails on the 1st and 2nd sections.

[0037] Working condition 4, after 6m of jacking: 1. Place the 4th pipe section.

[0038] 2. Remove the single 1.5m long temporary track placed on the 3rd pipe section and the single 3m long temporary track placed on the 1st and 2nd sections.

[0039] 3. Place a single 6m long permanent rail on the 1st, 2nd, 3rd and 4th pipe sections and mechanically connect it to the temporary rail on the top iron.

[0040] Working condition 5, after jacking 7.5m, (4n+1)×1.5m (where n≥1): 1. Place the 5th pipe segment.

[0041] 2. Place a single 1.5m long temporary track on the 5th pipe section, and connect it with the single 6m long permanent track on the 1st, 2nd, 3rd and 4th pipe sections.

[0042] 3. Similarly, after the 9th, 13th and 17th pipe sections (i.e. 4n+1, n≥2) are lowered into the well, they are connected to the single 6m long permanent rails on the 4nth, 4n-1, 4n-2 and 4n-3 pipe sections respectively.

[0043] Condition 6, after jacking 9m, (4n+2)×1.5m (where n≥1): 1. Place the 6th tube segment.

[0044] 2. Remove the single 1.5m long rail on the 5th pipe section.

[0045] 3. Place a single 3m long temporary track on the 5th and 6th pipe sections, and connect it to the single 6m long permanent track on the 4th pipe section.

[0046] 4. Similarly, after the 10th, 14th, and 18th (i.e., 4n+2, n≥2) pipe sections are lowered into the well, the 1.5m long track on the 4n+1th pipe section is removed respectively.

[0047] 5. Place a single 3m long temporary rail on the 4n+1 and 4n+2 pipe sections, and connect it to the single 6m long permanent rail on the 4n pipe section.

[0048] Condition 7, after jacking 10.5m, (4n+3)×1.5m (where n≥1): 1. Place the 7th tube segment.

[0049] 2. Place a single 1.5m long temporary track on the 7th pipe section and connect it with the single 3m long temporary track on the 5th and 6th pipe sections.

[0050] 3. Similarly, after the 11th, 15th, and 19th pipe sections (i.e. 4n+3, n≥2) are lowered into the well, the 3m long temporary rails on the 4n+1st and 4n+2nd pipe sections are removed respectively. A single 3m long temporary rail is placed on the 4n+3rd pipe section and connected with the single 3m long temporary rails on the 4n+2nd and 4n+1th pipe sections.

[0051] Working condition 8, after jacking 12m, (4n+4)×1.5m (where n≥1): 1. Place the 8th pipe segment.

[0052] 2. Remove the single 1.5m long temporary track placed on the 7th pipe section and the single 3m long temporary track placed on the 5th and 6th sections.

[0053] 3. Place a single 6m long permanent rail on the 5th, 6th, 7th and 8th pipe sections and connect it to the permanent rails on the 1st, 2nd, 3rd and 4th pipe sections.

[0054] 4. Similarly, after the 12th, 13th, and 14th pipe sections (i.e. 4n+4, n≥2) are lowered into the well, the 1.5m long temporary rails on the 4n+3 pipe section and the 3m long temporary rails on the 4n+1 and 4n+2 pipe sections are removed. A single 6m long temporary rail is placed on the 4n+, 4n+2, 4n+3, and 4n+4 pipe sections, and connected to the single 6m long permanent rails on the 4n, 4n-1, 4n-2, and 4n-3 pipe sections.

[0055] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate orientations or positional relationships of devices or equipment during normal use, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention in this regard.

[0056] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A detachable bucket track device for rectangular pipe jacking construction, characterized in that: include: Top iron; The pipe segment assembly is composed of a plurality of pipe segments, the plurality of pipe segments are arranged side by side, and one side of the pipe segment assembly contacts one side of the top iron; The track assembly is composed of multiple tracks. The tracks are made of rectangular tubes. The tracks of the track assembly are arranged on the upper part of the pipe segment assembly. The tracks of the track assembly include long tracks and short tracks. The length of the short track is consistent with the pipe segment width of the pipe segment assembly. The length of the long track is a multiple of the length of the short track. There are two track assemblies and they are symmetrically arranged. A track gauge space is formed between adjacent track assemblies.

2. The detachable bucket track device for rectangular pipe jacking construction according to claim 1 is characterized in that: The pipe joint assembly includes the 1st pipe joint, the 2nd pipe joint, the 3rd pipe joint, the 4th pipe joint, the 4n+1th pipe joint, the 4n+2th pipe joint and the 4n+3th pipe joint; one side of the 1st pipe joint contacts one side of the top iron, the other side of the 1st pipe joint contacts one side of the 2nd pipe joint, the other side of the 2nd pipe joint contacts one side of the 3rd pipe joint, the other side of the 3rd pipe joint contacts one side of the 4th pipe joint, the other side of the 4th pipe joint contacts one side of the 4n+1th pipe joint, the other side of the 4n+1th pipe joint contacts one side of the 4n+2th pipe joint, and the other side of the 4n+2th pipe joint contacts one side of the 4n+3th pipe joint.

3. The detachable bucket track device for rectangular pipe jacking construction according to claim 2, characterized in that: The track assembly comprises: Track 1, single length is 1.3m; Track 2 is a short track, and its length is the same as the length of the first pipe section. The length of a single track is 1.5m. Track 3 is a long track, which is twice as long as Track 2. The length of a single track is 3m. Track 4 is a long track, which is 4 times the length of Track 2. The length of a single track of Track 4 is 6m.

4. The detachable bucket track device for rectangular pipe jacking construction according to claim 1, characterized in that: It also includes a connecting component, which is composed of "∟"-shaped steel plates. There are four steel plates, two of which are respectively fixed to the two side walls of one end of the track of the track component, and the two steel plates are symmetrically arranged. The other two are respectively fixed to the two sides of the other end of the track of the track component, and the two steel plates are symmetrically arranged. The adjacent tracks of the track assembly are connected by the connecting component.

5. The detachable bucket track device for rectangular pipe jacking construction according to claim 4, characterized in that: The axes of adjacent tracks of the track assembly coincide with each other, and the steel plate of one track is connected to the steel plate of another track by bolts.

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