A wall brushing device for underground continuous wall construction using milling method and its use method

Abstract

The invention discloses a wall brushing device for underground continuous wall construction by milling method and a use method thereof, comprising a length adjuster, a left box, a right box and a width adjuster, the width adjuster comprising a first partition plate, the length adjuster comprising a second partition plate, the left box comprising a first box and a second box, the right box comprising a third box and a fourth box, a plurality of first partition plates are arranged between the first box and the third box, the second box and the fourth box and are connected by bolts, a plurality of second partition plates are arranged between the first box and the second box, the third box and the fourth box and are connected by bolts, the first box, the second box, the third box and the fourth box are all provided with wall brushes; the invention can adjust the number of second partition plates according to actual working conditions to adapt to the wall thickness of the underground continuous wall, and at the same time, adjust the number of first partition plates to adapt to the actual width of the second phase slot, so as to achieve the purpose of improving the wall brushing effect, and in addition, the eccentric hanging brush also improves the wall brushing quality.

Description

Technical Field

[0001] The invention relates to the technical field of underground construction equipment, and in particular to a wall brushing device for underground continuous wall construction using a milling method and a use method thereof. Background Art

[0002] As the shallow underground space in some cities in China has been basically utilized, and the deep excavation technology and equipment have been gradually improved, it has become possible to divide the underground space into functional areas in the vertical direction and gradually develop it to a deeper level. In the development of deep underground space in cities, ultra-deep foundation pit projects are inevitable. When constructing in urban areas with soft soil conditions, due to factors such as large excavation depth, complex surrounding environment, narrow site, and high groundwater head pressure, the strength and water-stopping effect of the retaining structure are required to be high during the foundation pit construction process.

[0003] Compared with traditional construction technology, the milling method underground continuous wall construction technology has significant advantages such as good joint water-stopping effect, stable groove formation, large depth, high efficiency, and small construction impact. The milling method underground continuous wall first carries out the first phase groove section construction. After the concrete pouring is completed, the first phase wall width is formed. When the second phase groove section is constructed, the milling machine is used to mill the concrete of the joint surface of the first phase wall width formed in advance into a serrated shape, forming a chiseled surface similar to the common chiseling surface in the construction joint of the new and old concrete, so that the second phase groove section concrete poured later and the first phase groove section concrete bite each other at the joint to form a tight joint.

[0004] During the milling process of the concrete at the end of the first-phase wall, that is, during the second-phase trenching process, the concrete at the end of the first-phase wall cracks and breaks due to the milling stress, forming a loose concrete belt, which may be mixed with mud and attached to the surface of the end of the width. Therefore, after the second-phase trenching is completed, the fresh joint surface of the first-phase wall needs to be cleaned with a wall brush. If the wall brushing is not in place, mud may be trapped in the joints, and a water leakage channel will be formed at the joints after the wall is formed, affecting the safety of the subsequent foundation pit.

[0005] The existing wall brushes in the underground continuous wall projects of ultra-deep milling method mostly adopt rectangular boxes welded by steel plates, with brush plates installed on the outer walls of both sides of the box, and short wire rope bristles fixed on the brush plates. The width of the rectangle is generally fixed and related to the length of the milling machine, because the width of the second-stage groove is generally fixed. Brush plates and bristles are installed on both sides of the box, in order to achieve wall brushing on both sides at the same time, reduce the number of wall brushing times, and improve work efficiency.

[0006] However, in the actual construction process of underground continuous wall with ultra-deep milling, when the second-phase groove is formed, the concrete age of the first-phase grooves on both sides is different, which easily causes the groove hole to be skewed, and it is often necessary to repair the groove and expand the hole several times. The width of the second-phase groove section finally formed is generally larger than the design value, and the joint surface of the first-phase and second-phase grooves is not an ideal plane. Therefore, the bristles of the wall brush cannot be closely attached to the target joint surface, and the wall brushing effect is often poor.

[0007] In addition, the wall thickness of the underground continuous wall of the ultra-deep milling method often varies according to the design requirements, and even in the same project there are different thicknesses. The existing wall brushes cannot meet most wall thickness sizes; for example, the wall brush used in the construction of the underground continuous wall with a double-wheel milling machine with publication number CN207452884U can only adjust the wall thickness direction of the underground continuous wall, and cannot meet the changes in the width direction of the second-phase groove; for example, the wall brush and wall brushing method of an underground continuous wall with publication number CN112523217A also have the above-mentioned problems.

[0008] In order to solve the above problems, the present invention provides a wall brushing device for underground continuous wall construction using a milling method and a method of using the device to solve the problem that the previous wall brushing device cannot adapt to underground continuous walls of different thicknesses and the second-phase trench is seriously enlarged due to trench repair. Summary of the invention

[0009] The purpose of the present invention is to provide a wall brushing device for underground continuous wall construction by milling method and a use method thereof, so as to achieve the purpose of improving the wall brushing quality.

[0010] To achieve the above object, the present invention provides the following solutions:

[0011] A wall brushing device for underground continuous wall construction using the milling method comprises a length adjuster, a left box, a right box and a width adjuster arranged between the left box and the right box, the width adjuster comprises a plurality of overlapping first partitions, the length adjuster comprises a plurality of overlapping second partitions, the left box comprises a first box and a second box, the right box comprises a third box and a fourth box, a plurality of the first partitions are arranged between the first box and the third box, the second box and the fourth box and are connected by bolts, a plurality of the second partitions are arranged between the first box and the second box, the third box and the fourth box and are connected by bolts, and a wall brush is arranged on the side of the first box, the second box, the third box and the fourth box away from the first partition.

[0012] Preferably, the first box, the second box, the third box and the fourth box have the same size.

[0013] Preferably, the thickness of the first separator and the second separator are both 8 mm to 10 mm.

[0014] Preferably, the first partition plate and the second partition plate are both steel plates.

[0015] Preferably, a lifting ring for connecting a lifting rope is provided at a middle position of the upper surface of the first box body, the second box body, the third box body and the fourth box body.

[0016] Preferably, the wall brush comprises a brush plate and a steel brush arranged on one side of the brush plate, and the other side of the brush plate is connected to the first box body, the second box body, the third box body and the fourth box body.

[0017] Preferably, the steel brushes are evenly arranged on the brush plate.

[0018] Preferably, the gravity is greater than the friction between the steel brushes and the continuous wall concrete wall.

[0019] A method for using a milling underground continuous wall brushing device comprises the following steps:

[0020] Adjust the number of partitions between the first and third boxes, and between the second and fourth boxes, and adapt to the thickness of the continuous wall;

[0021] Use the sling of the lifting equipment to connect with the lifting rings on the first box and the second box, and slowly lower the wall brush for underground continuous wall construction by milling method, while the steel brushes on the first box and the second box are close to the wall to be brushed, and the steel brushes on the third box and the fourth box are in contact with the wall to be brushed on the other side until the bottom of the groove;

[0022] Use a wall brush for underground continuous wall construction using the milling method mounted on a hoisting device;

[0023] This process is repeated until the steel brushes on the first box and the second box are in close contact with the wall to be brushed and the brushing is completed;

[0024] Use the slings of the lifting equipment to connect with the lifting rings on the third box and the fourth box, and slowly lower the wall brush for underground continuous wall construction using the milling method. At the same time, the steel brushes on the third box and the fourth box are in close contact with the wall to be brushed, and the steel brushes on the first box and the second box are in contact with the wall to be brushed on the other side until the bottom of the groove;

[0025] Use a wall brush for underground continuous wall construction using the milling method mounted on a hoisting device;

[0026] This process is repeated until the steel brushes on the third box body and the fourth box body are in close contact with the wall to be brushed and the wall brushing is completed.

[0027] Compared with the prior art, the present invention has achieved the following technical effects:

[0028] 1. The present invention can adjust the number of second partitions according to actual working conditions to achieve the purpose of adjusting the distance between the steel brushes on both sides, thereby adapting to the wall thickness of the underground continuous wall. At the same time, the number of first partitions is adjusted to adapt to the actual width of the second-phase trough, thereby achieving the purpose of improving the wall brushing effect.

[0029] 2. In the present invention, the first box body, the second box body, the third box body and the fourth box body have the same size; so that when the first box body, the second box body, the third box body and the fourth box body are installed with each other, they can be installed in a matching manner, thereby achieving the purpose of increasing the stability of the overall wall brushing device.

[0030] 3. In the present invention, the size of the first partition is the same as the sum of the side dimensions of the first box and the second box close to the first partition, and the size of the second partition is the same as the side opposite to the first box and the second box.

[0031] 4. In the present invention, the middle positions of the upper surfaces of the first box body, the second box body, the third box body and the fourth box body are all provided with lifting rings for connecting the lifting hooks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Attached Figure 1 A top view of the structure of the present invention;

[0034] Attached Figure 2 A front view of the structure of the present invention;

[0035] Attached Figure 3 A side view of the structure of the present invention;

[0036] Among them, 1. lifting ring; 2. lifting ring; 3. first box body; 4. third box body; 5. second box body; 6. fourth box body; 7. steel brush; 8. first partition plate; 9. second partition plate; 10. bolt. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The purpose of the present invention is to provide a wall brushing device for underground continuous wall construction by milling method and a use method thereof, so as to achieve the purpose of improving the wall brushing quality.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] refer to Figures 1 to 3 A wall brushing device for underground continuous wall construction by milling method, comprising a length adjuster, a left box, a right box and a width adjuster arranged between the left box and the right box, the width adjuster comprising a plurality of overlapping first baffles 8, the length adjuster comprising a plurality of overlapping second baffles 9, the left box comprising a first box 3 and a second box 5, the right box comprising a third box 4 and a fourth box 6, a plurality of first baffles 8 being arranged between the first box 3 and the third box 4, the second box 5 and the fourth box 6 and connected by bolts 10, a plurality of second baffles 9 being arranged between the first box 3 and the second box 5. The third box body 4 and the fourth box body 6 are connected by bolts 10, and the first box body 3, the second box body 5, the third box body 4 and the fourth box body 6 are provided with a wall brush on the side away from the first partition 8; in the present invention, by dismantling the bolts 10 and removing a certain number of second partitions 9, the distance between the steel brushes 7 on both sides of the wall brushing device is adjusted to adapt to the thickness of the underground continuous wall; at the same time, the number of first partitions 8 is adjusted to adapt to the actual width of the second phase trough, so that the wall brushing device meets the actual size of the underground continuous wall, so that the steel brushes 7 on the wall brushing device are close to the side wall, thereby achieving the purpose of improving the wall brushing effect.

[0041] refer to Figure 1 The first box body 3, the second box body 5, the third box body 4 and the fourth box body 6 have the same size; so that when the first box body 3, the second box body 5, the third box body 4 and the fourth box body 6 are installed with each other, they can be installed in a matching manner, thereby achieving the purpose of increasing the stability of the overall wall brushing device.

[0042] Furthermore, the thickness of the first separator 8 and the second separator 9 are both 8 mm to 10 mm.

[0043] Furthermore, the first partition plate 8 and the second partition plate 9 are both steel plates.

[0044] refer to Figure 1 A lifting ring 1 for connecting a sling is provided at the middle position of the upper surface of the first box body 3, the second box body 5, the third box body 4 and the fourth box body 6.

[0045] Furthermore, the wall brush includes a brush plate and a steel brush 7 arranged on one side of the brush plate, and the other side of the brush plate is connected to the first box body 3, the second box body 5, the third box body 4 and the fourth box body 6.

[0046] refer to Figure 3 , steel brushes 7 are evenly arranged on the brush plate.

[0047] Furthermore, the gravity of the wall brushing device is greater than the friction between the steel brush 7 and the concrete wall of the continuous wall, so that the wall brushing device will not stop moving downward during the process of brushing the wall downward.

[0048] The method for using the milling underground continuous wall brushing device of the present invention comprises the following steps:

[0049] Adjust the number of the first partition 8 and the second partition 9 between the first box body 3, the third box body 4, the second box body 5, and the fourth box body 6 to adapt to the thickness of the continuous wall and the width of the second phase groove; use the lifting rope of the lifting equipment to connect the lifting ring 1 on the first box body 3 and the second box body 5, and slowly lower the wall brush for underground continuous wall construction using the milling method, while the steel brushes 7 on the first box body 3 and the second box body 5 are close to the wall surface to be brushed, and the steel brushes 7 on the third box body 4 and the fourth box body 6 are in contact with the wall surface to be brushed on the other side until the bottom of the groove; use the lifting equipment to lift the wall brush for underground continuous wall construction using the milling method; repeat this process. Until the steel brushes 7 on the first box body 3 and the second box body 5 are in close contact with the wall to be brushed; use the lifting rope of the lifting equipment to connect with the lifting ring 1 on the third box body 4 and the fourth box body 6, and slowly lower the wall brush for underground continuous wall construction using the milling method, while the steel brushes 7 on the third box body 4 and the fourth box body 6 are in close contact with the wall to be brushed, and the steel brushes 7 on the first box body 3 and the second box body 5 are in contact with the wall to be brushed on the other side until the bottom of the groove; use the lifting equipment to lift the wall brush for underground continuous wall construction using the milling method; repeat this process until the wall brushing on the third box body 4 and the fourth box body 6 is in close contact with the wall to be brushed.

[0050] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0051] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A wall brushing device for underground continuous wall construction by milling method, characterized in that: It includes a length adjuster, a left box, a right box and a width adjuster arranged between the left box and the right box, the width adjuster includes a plurality of overlapping first partitions, the length adjuster includes a plurality of overlapping second partitions, the left box includes a first box and a second box, the right box includes a third box and a fourth box, a plurality of the first partitions are arranged between the first box and the third box, the second box and the fourth box and are connected by bolts, a plurality of the second partitions are arranged between the first box and the second box, the third box and the fourth box and are connected by bolts, and a wall brush is arranged on the side of the first box, the second box, the third box and the fourth box away from the first partition.

2. A wall brushing device for underground continuous wall construction using a milling method according to claim 1, characterized in that: The first box, the second box, the third box and the fourth box have the same size.

3. A wall brushing device for underground continuous wall construction using a milling method according to claim 1, characterized in that: The thickness of the first separator and the second separator are both 8 mm to 10 mm.

4. A wall brushing device for underground continuous wall construction using a milling method according to claim 3, characterized in that: The first partition plate and the second partition plate are both steel plates.

5. A wall brushing device for underground continuous wall construction using a milling method according to claim 4, characterized in that: A lifting ring for connecting a lifting rope is provided in the middle position of the upper surface of the first box body, the second box body, the third box body and the fourth box body.

6. A wall brushing device for underground continuous wall construction using a milling method according to claim 1, characterized in that: The wall brush comprises a brush plate and a steel brush arranged on one side of the brush plate, and the other side of the brush plate is connected to the first box body, the second box body, the third box body and the fourth box body.

7. A wall brushing device for underground continuous wall construction using a milling method according to claim 6, characterized in that: The steel brushes are evenly arranged on the brush plate.

8. The wall brushing device for underground continuous wall construction using the milling method according to claim 6 is characterized in that: The gravity of the wall brushing device is greater than the friction between the steel brush and the continuous wall concrete wall.

9. A method for using a milling underground continuous wall brushing device, characterized in that: The following steps are involved: Adjust the number of partitions between the first and third boxes, and between the second and fourth boxes, and adapt to the thickness of the continuous wall; Use the sling of the lifting equipment to connect with the lifting rings on the first box and the second box, and slowly lower the wall brush for underground continuous wall construction by milling method, while the steel brushes on the first box and the second box are close to the wall to be brushed, and the steel brushes on the third box and the fourth box are in contact with the wall to be brushed on the other side until the bottom of the groove; Use a wall brush for underground continuous wall construction using the milling method mounted on a hoisting device; This process is repeated until the steel brushes on the first box and the second box are in close contact with the wall to be brushed and the brushing is completed; Use the lifting rope of the lifting equipment to connect with the lifting rings on the third box and the fourth box, and slowly lower the wall brush for underground continuous wall construction using the milling method, while the steel brushes on the third box and the fourth box are close to the wall surface to be brushed, and the steel brushes on the first box and the second box are in contact with the wall surface to be brushed on the other side until the bottom of the groove; use the lifting equipment to lift the wall brush for underground continuous wall construction using the milling method; This process is repeated until the steel brushes on the third box body and the fourth box body are in close contact with the wall to be brushed and the wall brushing is completed.

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