CN111691480B - Underground continuous wall construction equipment - Google Patents

Abstract

The invention relates to underground continuous wall construction equipment, which comprises a main machine, a connecting piece, a suspension device and a grab bucket body, wherein the suspension device is connected with the main machine through the connecting piece and lifts or lowers the suspension device along with the retraction of the connecting piece, the grab bucket body is arranged on the suspension device, the suspension device comprises a main shaft, an inner ring, a first oil pipe, an outer ring, a second oil pipe, a shell and a driving mechanism, the main shaft is connected with the main machine through the connecting piece, the inner ring is sleeved on the periphery of the main shaft and is relatively fixed with the main shaft, the inner ring is provided with a first oil duct, the first oil pipe is connected between the main machine and the first oil duct, the outer ring is sleeved on the periphery of the inner ring and can rotate relative to the inner ring, the outer ring is provided with a second oil duct which is arranged along the circumferential direction of the outer ring and is communicated with the first oil duct, the second oil pipe is connected between the second oil duct and the grab bucket body, the shell is sleeved on the periphery of the main shaft and can rotate relative to the main shaft, the shell is respectively connected with the outer ring and the grab bucket body, and the driving mechanism is in driving connection with the shell so as to drive the shell and drive the grab bucket body to rotate.

Description

Underground continuous wall construction equipment

Technical Field

The invention relates to the technical field of engineering machinery, in particular to underground continuous wall construction equipment.

Background

The construction place of underground continuous wall is narrower and small, when being under construction at turning groove section, often through tearing open the fender that encloses, realizes through the position of adjustment host computer, wastes time and energy, can influence holistic construction progress when untimely because of the construction of several turning groove sections. Meanwhile, when the underground diaphragm wall hydraulic grab bucket is constructed in a rectangular groove, the left side and the right side of the bucket body are stressed unevenly due to the difference of arrangement of bucket head bucket teeth on the left side and the right side, and the left side and the right side of the bucket body are inclined when the bucket is grabbed.

In order to solve the problems, the grab bucket body needs to be periodically rotated by a preset angle around the center of the wall body in the excavation process so as to improve the grooving precision. When the grab bucket body is rotated, the conventional method is realized by changing the position of the main machine, or the grab bucket body is disassembled and then reversely assembled, but the position of the main machine is inconvenient to adjust due to the fact that the position is limited by the size of a field, and time and labor are consumed when the grab bucket body is disassembled and reversely assembled.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The embodiment of the invention provides underground continuous wall construction equipment, which is used for improving the rotation efficiency of a grab bucket body.

According to an aspect of the present invention, there is provided an underground diaphragm wall construction apparatus including a main body, a connection member, a suspension device connected to the main body through the connection member and lifting or lowering the suspension device as the connection member is retracted and extended, and a grapple body installed on the suspension device, the suspension device including:

the main shaft is connected with the main machine through a connecting piece;

the inner ring is sleeved on the periphery of the main shaft and is relatively fixed with the main shaft, and a first oil duct is arranged on the inner ring;

the first oil pipe is connected between the main machine and the first oil duct;

the outer ring is sleeved on the periphery of the inner ring and can rotate relative to the inner ring, and the outer ring is provided with a second oil duct which is arranged along the circumferential direction of the outer ring and communicated with the first oil duct;

the second oil pipe is connected between the second oil duct and the grab bucket body;

the shell is sleeved on the periphery of the main shaft and can rotate relative to the main shaft, and the shell is respectively connected with the outer ring and the grab bucket body; and

and the driving mechanism is in driving connection with the shell to drive the shell to rotate relative to the main shaft, so that the outer ring and the grab bucket body are driven to rotate relative to the main shaft.

In some embodiments, the inner race is removably coupled to the main shaft.

In some embodiments, the underground diaphragm wall construction equipment further comprises a first limiting plate, the main shaft is provided with a first groove, the first limiting plate is inserted into the first groove, and the first limiting plate is connected with the inner ring to limit the axial movement of the inner ring along the main shaft.

In some embodiments, the main shaft is provided with two first grooves arranged at intervals in the circumferential direction, and two first limit plates are respectively inserted into the corresponding first grooves to limit the circumferential rotation of the inner ring along the main shaft.

In some embodiments, the underground continuous wall construction equipment further comprises a second limiting plate, the second limiting plate is installed at the bottom of the inner ring, and the outer ring abuts against one side, far away from the grab bucket body, of the second limiting plate.

In some embodiments, the outer ring comprises an outer ring main body and a bottom plate, the bottom plate is mounted at one end of the outer ring main body close to the grab bucket body, and the bottom plate abuts against the second limit plate.

In some embodiments, the underground diaphragm wall construction equipment further includes a first connection plate connected between the outer ring and the housing, the connection between the first connection plate and the housing having a gap in an axial direction of the main shaft.

In some embodiments, the underground diaphragm wall construction equipment further includes a second connection plate provided on the housing, the first connection plate being connected with the second connection plate, a connection between the first connection plate and the second connection plate having a gap in an axial direction of the main shaft.

In some embodiments, the underground diaphragm wall construction apparatus further comprises a shoulder removably mounted on the main shaft, the shoulder configured to restrict movement of the housing in an axial direction of the main shaft.

In some embodiments, the shoulder comprises a first arcuate segment and a second arcuate segment, and the spindle is provided with an annular second groove into which the first arcuate segment and the second arcuate segment abut and snap fit.

In some embodiments, the underground diaphragm wall construction equipment further comprises a first pipeline adapter, the axial length of the inner ring is greater than that of the outer ring, a third groove is formed in the part, exposed out of the outer ring, of the inner ring, the first pipeline adapter is installed in the third groove, and the first pipeline adapter is connected between the first oil pipe and the first oil duct.

In some embodiments, the underground diaphragm wall construction equipment further comprises a sealing ring disposed between the inner ring and the outer ring.

In some embodiments, the underground diaphragm wall construction equipment further comprises a first bearing and a second bearing disposed between the main shaft and the housing, the first bearing configured to carry radial forces and the second bearing configured to carry axial forces.

In some embodiments, the drive mechanism includes a swivel cylinder having a maximum swivel angle that is between 8 ° and 12 ° greater than a maximum swivel angle of the grapple body relative to the spindle.

Based on the technical scheme, the suspension device comprises the shell and the driving mechanism, the grab bucket body is connected with the shell, the shell is driven to rotate through the driving mechanism, the grab bucket body is further driven to rotate relative to the main shaft, the position of a host does not need to be changed, the grab bucket body does not need to be detached and then reversely installed, rotation in a suspension state is achieved, the rotation mode can be prevented from being limited by the size of a field, time and labor are saved, the rotation efficiency of the grab bucket body is improved, and the construction efficiency of the underground diaphragm wall is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic structural view of an embodiment of the underground diaphragm wall construction equipment of the present invention.

Fig. 2 is a schematic structural view of a suspension unit according to an embodiment of the underground diaphragm wall construction apparatus of the present invention.

Fig. 3 is a partial structural sectional view of a suspension unit according to an embodiment of the underground diaphragm wall construction apparatus of the present invention.

Fig. 4 is a schematic structural view of a main shaft and a rotary joint in one embodiment of the underground diaphragm wall construction apparatus of the present invention.

Fig. 5 is a sectional view of a rotary joint in one embodiment of the underground diaphragm wall construction apparatus of the present invention.

Fig. 6 is a schematic structural view of a main shaft in one embodiment of the underground diaphragm wall construction apparatus of the present invention.

Fig. 7 is a schematic view showing the fitting structure of first connection plates and second connection plates in one embodiment of the underground diaphragm wall construction apparatus of the present invention.

Fig. 8 is a schematic view showing a connection structure of a suspension unit and a main frame in an embodiment of the underground diaphragm wall construction equipment of the present invention.

In the figure:

100. a suspension device; 200. a grab bucket body; 300. a host; 400. a connecting member;

101. a suspension joint; 102. a main shaft; 103. an outer ring; 104. a first connecting plate; 105. a second connecting plate; 106. a housing; 107. a through hole; 108. a connecting seat; 109. rotating the oil cylinder; 110. a first bearing housing; 111. a first bolt; 112. a first pipeline adapter; 113. a first sliding bearing; 114. a shaft shoulder; 1141. a first arcuate segment; 1142. a second arcuate segment; 1143. a first connection hole; 1144. a second connection hole; 1145. a second bolt; 115. a second bearing housing; 116. a second sliding bearing; 117. a third bolt; 118. a third connecting plate; 119. a fourth connecting plate; 120. a roller bearing; 121. a top plate; 122. a fourth bolt; 123. a first platen; 124. an inner ring; 125. a fifth bolt; 126. a third groove; 127. a second groove; 128. a second platen; 129. a sixth bolt; 130. a first limit plate; 131. a first oil passage; 132. a second oil passage; 133. a second pipeline adapter; 134. a seventh bolt; 135. a second limiting plate; 136. a base plate; 137. an eighth bolt; 138. a seal ring; 139. a first groove; 140. a first oil pipe; 141. a second oil pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.

Referring to fig. 1 to 5, in some embodiments of the underground continuous wall construction equipment provided by the present invention, the underground continuous wall construction equipment includes a main frame 300, a connection member 400, a suspension device 100, and a grab body 200, the suspension device 100 is connected to the main frame 300 through the connection member 400 and lifts or lowers the suspension device 100 as the connection member 400 is retracted, and the grab body 200 is mounted on the suspension device 100.

Wherein the connector 400 may be a steel wire rope. The underground continuous wall construction equipment can also comprise a winch which is used for winding the steel wire rope to realize the function of winding or unwinding the steel wire rope. The suspension device 100 comprises a suspension joint 101, and a connection hole connected with a steel wire rope is arranged on the suspension joint 101.

The suspension device 100 comprises a main shaft 102, an inner ring 124, a first oil pipe 140, an outer ring 103, a second oil pipe 141, a shell 106 and a driving mechanism, wherein the main shaft 102 is connected with a main machine 300 through a connecting piece 400, the inner ring 124 is sleeved on the periphery of the main shaft 102, the inner ring 124 is fixed relative to the main shaft 102, the inner ring 124 is provided with a first oil passage 131, the first oil pipe 140 is connected between the main machine 300 and the first oil passage 131, the outer ring 103 is sleeved on the periphery of the inner ring 124, the outer ring 103 can rotate relative to the inner ring 124, the outer ring 103 is provided with a second oil passage 132 which is arranged along the circumferential direction and is communicated with the first oil passage 131, the second oil pipe 141 is connected between the second oil passage 132 and a grab bucket body 200, the shell 106 is sleeved on the periphery of the main shaft 102, the shell 106 can rotate relative to the main shaft 102, the shell 106 is respectively connected with the outer ring 103 and the grab bucket body 200, the driving mechanism is in driving connection with the shell 106, the driving mechanism is configured to drive the shell 106 to rotate relative to the main shaft 102, the outer ring 103 and the grab body 200 are driven to rotate relative to the main shaft 102 by the driving housing 106.

In the above embodiment, the suspension device 100 includes the casing 106 and the driving mechanism, the grab bucket body 200 is connected with the casing 106, the casing 106 is driven to rotate through the driving mechanism, and then the grab bucket body 200 is driven to rotate relative to the main shaft 102, the position of the main machine 300 does not need to be changed, the grab bucket body does not need to be dismounted and then reversely mounted, the rotation under the suspension state is realized, the limitation of the field size can be avoided by the rotation mode, the time and the labor are saved, the efficiency of the rotation of the grab bucket body is improved, and the construction efficiency of the underground diaphragm wall is improved.

Moreover, the suspension device 100 includes an inner ring 124 sleeved on the main shaft 102 and an outer ring 103 rotatable relative to the inner ring 124, the inner ring 124 is provided with a first oil passage 131, the outer ring 103 is provided with a second oil passage 132, a first oil pipe 140 communicated with the main machine 300 can be led into the first oil passage 131, the first oil passage 131 is communicated with the second oil passage 132, and the second oil passage 132 is communicated with a hydraulic oil circuit in the grab bucket body 200 through a second oil pipe 141, so that the oil circuit connected between the main machine 300 and the grab bucket body 200 can be prevented from rotating in the rotation process of the grab bucket body 200, and the protection of the oil circuit is facilitated.

Meanwhile, the first oil duct 131 included in the oil path connected between the main unit 300 and the grab bucket body 200 is disposed on the inner ring 124, and the second oil duct 132 is disposed on the outer ring 103 instead of the main shaft 102, that is, no oil duct is disposed on the main shaft 102, which is beneficial for protecting the main shaft 102, so that the main shaft 102 has higher structural strength, the main shaft 102 is prevented from being provided with an oil duct to reduce the strength of the main shaft 102, and the service life of the main shaft 102 is prolonged.

In addition, the inner ring 124 is sleeved on the outer periphery of the main shaft 102 and fixed relative to the main shaft 102, and the housing 106 is sleeved on the outer periphery of the main shaft 102 and can rotate relative to the main shaft 102, that is, the inner ring 124 and the housing 106 are respectively sleeved on different axial positions of the main shaft 102, for example, in the embodiment shown in fig. 2, the inner ring 124 is located above the housing 106, so that the advantage of this arrangement is that the inner ring 124 and the outer ring 103 can be assembled into an independent module, which facilitates the independent installation and detachment of the module on the main shaft 102.

In some embodiments, the inner race 124 is removably coupled with the main shaft 102. The advantage of this arrangement is that the inner ring 124 and the outer ring 103 can be selectively installed or the inner ring 124 and the outer ring 103 can be selectively removed according to actual needs. For example, in some construction environments, the rotation angle of the grapple body 200 with respect to the main shaft 102 is within 90 °, and the rotation angle of the oil path connected between the main machine 300 and the grapple body 200 along with the rotation of the grapple body 200 is also controlled within 90 °, and if the oil path is not damaged within the rotation angle range, the inner ring 124 and the outer ring 103 may not be installed, so as to simplify the structure of the suspension device 100 and reduce the overall weight of the suspension device 100; if the rotation angle of the grab bucket body 200 relative to the main shaft 102 is greater than 90 °, the oil path is difficult to bear the rotation angle greater than 90 °, so the inner ring 124 and the outer ring 103 can be mounted on the main shaft 102 at this time, the oil path is prevented from rotating, and the oil path is effectively protected.

The inner ring 124 and the main shaft 102 are detachably connected, so that more choices can be provided for users, different requirements of the users can be met, and the application range is wide.

It should be appreciated that the inner race 124 and the main shaft 102 are configured to be removably coupled without interfering with the inner race 124 remaining relatively stationary with the main shaft 102. The inner ring 124 is fixed relative to the main shaft 102, and when the outer ring 103 rotates relative to the main shaft 102, the inner ring 124 is prevented from rotating relative to the main shaft 102.

In some embodiments, as shown in fig. 4, the underground diaphragm wall construction equipment further includes a first limit plate 130, the main shaft 102 is provided with a first groove 139, the first limit plate 130 is inserted into the first groove 139, and the first limit plate 130 is connected with the inner ring 124 to limit the axial movement of the inner ring 124 along the main shaft 102.

The first groove 139 opens on the circumferential side surface of the main shaft 102 and extends from the circumferential side surface in the radial direction toward the axis. The first stopper plate 130 is inserted into the first recess 139 from the side of the main shaft 102 in a direction radially closer to the axis. The height of the first groove 139 in the axial direction is substantially equal to the thickness of the first limit plate 130, and the connecting member 400 (for example, the sixth bolt 129) is screwed into the inner ring 124 through the first limit plate 130 to connect the first limit plate 130 and the inner ring 124, and the inner ring 124 is restricted from moving in the axial direction of the main shaft 102 by the first limit plate 130.

In some embodiments, the main shaft 102 is provided with two first grooves 139 arranged at intervals in the circumferential direction, that is, the two first grooves 139 are not communicated, and the two first limiting plates 130 are respectively inserted into the corresponding first grooves 139 to limit the inner ring 124 from rotating in the circumferential direction of the main shaft 102.

By providing two first grooves 139 arranged at intervals in the circumferential direction, the corresponding first limiting plate 130 is arranged in each first groove 139, and the first limiting plate 130 is connected with the inner ring 124, the circumferential length of the first limiting plate 130 is the same as that of the first groove 139, and the first limiting plate 130 cannot rotate in the first groove 139, so that the inner ring 124 can be limited from rotating relative to the main shaft 102.

In some embodiments, as shown in fig. 5, the underground diaphragm wall construction equipment further includes a second limit plate 135, the second limit plate 135 is installed at the bottom of the inner ring 124, and the outer ring 103 abuts against a side of the second limit plate 135 away from the grab body 200.

The second stopper plate 135 may be mounted at the bottom of the inner race 124 by a seventh bolt 134.

Through setting up second limiting plate 135, and outer lane 103 supports and leans on the one side of keeping away from the grab bucket body 200 of second limiting plate 135, can restrict outer lane 103 and take place to remove along the axial of main shaft 102, avoids outer lane 103 to take place to drop.

In some embodiments, the collar 103 includes a collar body and a bottom plate 136, the bottom plate 136 is mounted on an end of the collar body near the grab body 200, and the bottom plate 136 abuts against the second stopper plate 135.

Through setting up bottom plate 136, can avoid outer lane main part and second limiting plate 135 to take place the friction when outer lane 103 takes place to rotate for inner circle 124, be favorable to protecting the outer lane main part, improve the life of outer lane main part, reduce the change of outer lane main part.

The bottom plate 136 may be made of a wear resistant material. The bottom plate 136 is attached to the bottom of the outer ring main body by an eighth bolt 137. The bottom plate 136 may be individually replaced when worn.

In some embodiments, the underground diaphragm wall construction equipment further includes a first connection plate 104 connected between the outer ring 103 and the housing 106, and a connection between the first connection plate 104 and the housing 106 has a gap in an axial direction of the main shaft 102. The setting in this clearance can make the outer lane 103 support and lean on the one side of keeping away from the grab bucket body 200 of second limiting plate 135, through second limiting plate 135 bearing outer lane 103, avoids the gravity of outer lane 103 to fall on first connecting plate 104.

The first connecting plate 104 connects the outer ring 103 and the housing 106, so that the housing 106 can drive the outer ring 103 to rotate relative to the main shaft 102 when the housing 106 rotates relative to the main shaft 102, and rotation of an oil path connected between the main machine 300 and the grab bucket body 200 is avoided.

In some embodiments, the underground diaphragm wall construction equipment further includes a second connection plate 105 provided on the housing 106, the first connection plate 104 is connected with the second connection plate 105, and the connection between the first connection plate 104 and the second connection plate 105 has a gap in the axial direction of the main shaft 102. As shown in fig. 7, it can be seen that the lower surface of the horizontal portion of the first connection plate 104 has a gap with the second connection plate 105, and the gap may be 1mm to 2 mm.

By providing the second connecting plate 105, the height of the housing 106 can be reduced as much as possible while the outer ring 103 and the housing 106 are connected, and the overall weight of the suspension device 100 can be reduced.

As shown in fig. 2 and 3, the side surface of the first connecting plate 104 is L-shaped, and the vertical part of the first connecting plate 104 abuts against the side surface of the outer ring 103 and is connected with the outer ring 103 through a bolt; the horizontal portion of the first connection plate 104 is connected to the second connection plate 105.

In some embodiments, the underground diaphragm wall construction equipment further includes a shoulder 114, the shoulder 114 being removably mounted to the main shaft 102, the shoulder 114 being configured to limit movement of the housing 106 in an axial direction of the main shaft 102.

The shaft shoulder 114 bears the axial force applied to the grab bucket body 200, and the shaft shoulder 114 is detachably mounted on the main shaft 102, so that the shaft shoulder 114 can be conveniently replaced, and the whole main shaft 102 is prevented from being replaced.

In some embodiments, the shoulder 114 includes a first arcuate segment 1141 and a second arcuate segment 1142, the main shaft 102 is provided with an annular second groove 127, and the first arcuate segment 1141 and the second arcuate segment 1142 abut and snap into the second groove 127.

By providing the shoulder 114 as two arcuate segments, the shoulder 114 may be removably attached. By providing the second groove 127, the shoulder 114 can be axially limited, and the shoulder 114 is prevented from moving in the axial direction of the main shaft 102.

As shown in fig. 4, the end of the first arc-shaped section 1141 is provided with a first connection hole 1143, the side of the second arc-shaped section 1142 is provided with a second connection hole 1144, and the second bolt 1145 passes through the second connection hole 1144 and is screwed into the first connection hole 1143, so as to detachably connect the first arc-shaped section 1141 and the second arc-shaped section 1142.

The first and second segments 1141, 1142 may each be semi-circular, or may have a center angle of one greater than 180 ° and a center angle of the other less than 180 °.

In some embodiments, the underground diaphragm wall construction equipment further includes a first pipe joint 112, an axial length of the inner ring 124 is greater than an axial length of the outer ring 103, a portion of the inner ring 124 exposed from the outer ring 103 is provided with a third groove 126, the first pipe joint 112 is installed in the third groove 126, and the first pipe joint 112 is connected between the first oil pipe 140 and the first oil passage 131.

The first pipeline adapter bears the effect of communicating the first oil pipe 140 with the first oil duct 131, the inlet of the first oil duct 131 is located on the side face of the inner ring 124, and the direction change of the oil duct by 90 degrees can be realized through the first pipeline adapter. Through first pipeline adapter and setting third recess 126 to install first pipeline adapter in third recess 126, can avoid first oil pipe 140 to receive the shearing force, effectively protect oil pipe.

In some embodiments, the inner ring 124 is provided with a plurality of first oil passages 131, the plurality of first oil passages 131 may be located at different circumferential positions of the inner ring 124, the outer ring 103 is provided with a plurality of second oil passages 132, and the plurality of second oil passages 132 are located at different axial positions of the outer ring 103. The number of the first oil passage 131 and the second oil passage 132 may be flexibly set according to actual needs.

As shown in fig. 5, the inner ring 124 is provided with two first oil passages 131, the outer ring 103 is provided with two second oil passages 132, one of the first oil passages 131 is communicated with one of the second oil passages 132 and can be used for connecting an oil inlet path, and the other first oil passage 131 is communicated with the other second oil passage 132 and can be used for connecting an oil return path. A second line adapter 133 may be disposed at an oil port of the second oil passage 132.

In some embodiments, the underground diaphragm wall construction equipment further includes a sealing ring 138 disposed between the inner ring 124 and the outer ring 103.

The underground diaphragm wall construction equipment may include a plurality of packing rings 138. As shown in fig. 5, a sealing ring 138 is disposed above the upper second oil passage 132, a sealing ring 138 is disposed below the lower second oil passage 132, and a sealing ring 138 is disposed between the two second oil passages 132. An oil film seal is formed between the inner ring 124 and the outer ring 103.

In some embodiments, the underground continuous wall construction equipment further comprises a first bearing and a second bearing disposed between the main shaft 102 and the housing 106, the first bearing configured to carry radial forces and the second bearing configured to carry axial forces. By providing the first bearing and the second bearing, it is possible to reduce the resistance when the relative rotation occurs between the main shaft 102 and the housing 106, and to reduce the frictional force generated between the main shaft 102 and the housing 106.

As shown in fig. 3, two first bearings, namely a first sliding bearing 113 and a second sliding bearing 116, are disposed between the main shaft 102 and the housing 106, an inner ring of the first sliding bearing 113 is connected to the main shaft 102, an outer ring of the first sliding bearing 113 is connected to the first bearing seat 110, the first bearing seat 110 includes a shoulder, and the shoulder of the first bearing seat 110 is connected to the housing 106 through the first bolt 111. The inner ring of the second sliding bearing 116 is connected to the main shaft 102, the outer ring of the second sliding bearing 116 is connected to the second bearing seat 115, and a fourth groove for accommodating the shoulder 114 is formed inside the second bearing seat 115. A third pressure plate is arranged on one side of the second bearing seat 115 close to the grab bucket body 200, the third pressure plate is connected with the second bearing seat 115 through a bolt, and meanwhile, the third pressure plate is connected with the first bearing seat 110 through another bolt so as to limit the second bearing seat 115.

A first pressing plate 123 is disposed on one side of the first bearing seat 110 far away from the grab bucket body 200, and the first pressing plate 123 is connected with the first bearing seat 110 through a fourth bolt 122 so as to axially limit the first bearing seat 110.

A second bearing, which is a roller bearing 120, is also provided between the main shaft 102 and the housing 106, and the roller bearing 120 is located between the first sliding bearing 113 and the second sliding bearing 116 in the axial direction. Roller bearing 120 is mounted between main shaft 102 and first bearing housing 110.

In some embodiments, the drive mechanism includes a rotation cylinder 109, and a maximum rotation angle of the rotation cylinder 109 is 8 ° to 12 °, such as 8 °, 9 °, 10 °, 11 °, or 12 °, greater than a maximum rotation angle of the grapple body 200 relative to the main shaft 102. Setting the maximum rotation angle of the rotation cylinder 109 to be larger than the maximum rotation angle of the grapple body 200 with respect to the main shaft 102 can ensure that the grapple body 200 can rotate to the maximum angle with respect to the main shaft 102. And the maximum rotation angle of the rotation oil cylinder 109 is set to be 8-12 degrees larger than the maximum rotation angle of the grab bucket body 200 relative to the main shaft 102, so that the requirement on the rotation oil cylinder 109 can be reduced as far as possible on the premise that the grab bucket body 200 can rotate to the maximum angle relative to the main shaft 102 is ensured, and the cost is saved.

In some embodiments, the swivel cylinder 109 is mounted inside the housing 106. The casing 106 protects the rotary cylinder 109 and prevents falling rocks and the like from damaging the rotary cylinder 109 during the construction of the diaphragm wall.

As shown in fig. 3, the output end of the rotary cylinder 109 is connected to the main shaft 102 by a flat key, the cylinder body of the rotary cylinder 109 is mounted on a third connecting plate 118 located inside the housing 106, the third connecting plate 118 is connected to a fourth connecting plate 119 by a third bolt 117, and the fourth connecting plate 119 is mounted on the inner wall of the housing 106. The housing 106 includes a top plate 121, and a preset distance is provided between the top plate 121 and the fourth connecting plate 119 in the axial direction. By providing the third connecting plate 118 and the fourth connecting plate 119, the mounting of the rotary cylinder 109 can be facilitated.

Through holes 107 are provided in a plurality of side surfaces of the housing 106, and by providing the through holes 107, the overall weight of the housing 106 can be reduced, and maintenance of the rotary cylinder 109 is facilitated.

The bottom of the housing 106 is provided with a connecting seat 108, and the housing 106 is connected with the grab body 200 through the connecting seat 108.

As shown in fig. 5, a second pressing plate 128 is disposed at an end of the outer ring 103 away from the grab body 200, and the second pressing plate 128 is connected to the outer ring 103 through a fifth bolt 125 to limit and seal a sealing member disposed between the outer ring 103 and the inner ring 124.

In some embodiments, the underground diaphragm wall construction equipment further includes a control valve provided to the grab body 200 and a connection line connected between the hydraulic oil line of the grab body 200 and the swivel cylinder 109, and the control valve is configured to control on/off of the connection line.

By arranging the connecting pipeline, oil can be taken from the oil supply system of the grab bucket body 200 and is led to the rotary oil cylinder 109 to be used as a power source of the rotary oil cylinder 109, so that a special oil source does not need to be arranged for the rotary oil cylinder 109, and an oil way system can be simplified.

By operating the control valve, the rotation or stop of the rotation of the rotary cylinder 109 can be controlled, and the rotation of the grapple body 200 can be controlled.

In some embodiments, the underground diaphragm wall construction equipment further comprises a controller disposed on the main machine 300, and the controller is in signal connection with the control valve. This allows the operator to control the opening and closing of the control valve on the main body 300 by the controller, thereby controlling the rotation of the grapple body 200.

Through the description of a plurality of embodiments of the underground continuous wall construction equipment, the embodiment of the underground continuous wall construction equipment can realize the rotation of the grab bucket body in a suspension state, the position of a main machine does not need to be changed, the grab bucket body does not need to be disassembled and reassembled, the rotation efficiency of the grab bucket body can be obviously improved, and the construction efficiency of the underground continuous wall is improved; moreover, the oil circuit connecting the main engine and the grab bucket body is arranged on the inner ring and the outer ring, but not on the main shaft, so that the strength of the main shaft can be ensured, and the service life of the main shaft is prolonged; by arranging the inner ring and the outer ring, the oil pipe can be prevented from rotating along with the grab body, and the oil pipe is protected; the inner ring is detachably arranged on the main shaft, and the inner ring and the outer ring can be selectively arranged or detached according to actual needs; the shaft shoulder adopts split type structure, is convenient for realize the demountable installation of shaft shoulder, and convenient the change.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.

Claims (14)

1. An underground diaphragm wall construction equipment, comprising a main machine (300), a connecting piece (400), a suspension device (100) and a grab bucket body (200), wherein the suspension device (100) is connected with the main machine (300) through the connecting piece (400) and lifts or lowers the suspension device (100) along with the retraction of the connecting piece (400), the grab bucket body (200) is installed on the suspension device (100), and the suspension device (100) is characterized by comprising:

a main shaft (102) connected to the main body (300) through the connector (400);

the inner ring (124) is sleeved on the periphery of the main shaft (102) and is fixed relative to the main shaft (102), and the inner ring (124) is provided with a first oil channel (131);

a first oil pipe (140) connected between the main machine (300) and the first oil passage (131);

the outer ring (103) is sleeved on the outer periphery of the inner ring (124) and can rotate relative to the inner ring (124), and the outer ring (103) is provided with a second oil channel (132) which is arranged along the circumferential direction of the outer ring and communicated with the first oil channel (131);

a second oil pipe (141) connected between the second oil passage (132) and the grab body (200);

a housing (106) which is sleeved on the periphery of the main shaft (102) and can rotate relative to the main shaft (102), wherein the housing (106) is respectively connected with the outer ring (103) and the grab bucket body (200); and

the driving mechanism is in driving connection with the shell (106) to drive the shell (106) to rotate relative to the main shaft (102), and further drive the outer ring (103) and the grab bucket body (200) to rotate relative to the main shaft (102).

2. An underground diaphragm wall construction apparatus according to claim 1, wherein the inner ring (124) is detachably connected to the main shaft (102).

3. An underground diaphragm wall construction equipment according to claim 1, further comprising a first limit plate (130), wherein the main shaft (102) is provided with a first groove (139), the first limit plate (130) is inserted into the first groove (139), and the first limit plate (130) is connected with the inner ring (124) to limit the axial movement of the inner ring (124) along the main shaft (102).

4. An underground diaphragm wall construction equipment according to claim 3, wherein the main shaft (102) is provided with two first grooves (139) arranged at intervals in the circumferential direction, and two first limiting plates (130) are respectively inserted into the corresponding first grooves (139) to limit the circumferential rotation of the inner ring (124) along the main shaft (102).

5. An underground diaphragm wall construction equipment according to claim 1, further comprising a second limit plate (135), wherein the second limit plate (135) is installed at the bottom of the inner ring (124), and the outer ring (103) abuts against one side of the second limit plate (135) far away from the grab bucket body (200).

6. An underground diaphragm wall construction equipment according to claim 5, wherein the outer ring (103) comprises an outer ring main body and a bottom plate (136), the bottom plate (136) is installed at one end of the outer ring main body close to the grab body (200), and the bottom plate (136) abuts on the second limit plate (135).

7. An underground diaphragm wall construction apparatus according to claim 1, further comprising a first connecting plate (104) connected between the outer ring (103) and the housing (106), the connection between the first connecting plate (104) and the housing (106) having a clearance in the axial direction of the main shaft (102).

8. An underground diaphragm wall construction apparatus according to claim 7, further comprising a second connecting plate (105) provided on the housing (106), the first connecting plate (104) being connected to the second connecting plate (105), the connection between the first connecting plate (104) and the second connecting plate (105) having a clearance in the axial direction of the main shaft (102).

9. The underground continuous wall construction equipment according to claim 1, further comprising a shoulder (114), the shoulder (114) being detachably mounted on the main shaft (102), the shoulder (114) being configured to restrict the housing (106) from moving in an axial direction of the main shaft (102).

10. An underground diaphragm wall construction equipment according to claim 9, wherein the shaft shoulder (114) comprises a first arc-shaped section (1141) and a second arc-shaped section (1142), the main shaft (102) is provided with a second annular groove (127), and the first arc-shaped section (1141) and the second arc-shaped section (1142) are butted and snapped into the second groove (127).

11. An underground diaphragm wall construction equipment according to claim 1, further comprising a first pipe adapter (112), wherein the axial length of the inner ring (124) is greater than the axial length of the outer ring (103), the part of the inner ring (124) exposed out of the outer ring (103) is provided with a third groove (126), the first pipe adapter (112) is installed in the third groove (126), and the first pipe adapter (112) is connected between the first oil pipe (140) and the first oil passage (131).

12. An underground diaphragm wall construction apparatus according to claim 1, further comprising a sealing ring (138) disposed between the inner ring (124) and the outer ring (103).

13. An underground continuous wall construction equipment according to claim 1, further comprising a first bearing and a second bearing disposed between the main shaft (102) and the housing (106), the first bearing being configured to carry radial forces and the second bearing being configured to carry axial forces.

14. An underground diaphragm wall construction apparatus according to claim 1, wherein the drive mechanism comprises a rotary cylinder (109), and the maximum rotation angle of the rotary cylinder (109) is 8 ° to 12 ° greater than the maximum rotation angle of the grapple body (200) relative to the main shaft (102).

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