A tree pit digging device for sandy and rocky land

Abstract

The present invention discloses a tree pit digging device for sandy and gravelly land, and relates to the technical field of tree pit digging, comprising a loading frame, a supporting angle is fixedly installed on the bottom of the loading frame, a wheel is rotatably penetrated on the surface of the loading frame, a cylindrical rod is fixedly installed on the inner wall of the loading frame, a sliding groove is provided on the inner wall of the loading frame, a circular hole is provided on the circumferential surface of the cylindrical rod, and also comprises a pit digging device; wherein, the pit digging device comprises a lifting plate, a digging mechanism, a gripping rod, a rectangular plate, a sliding rod, a carrying plate, an L-shaped plate, a No. 1 spring piece, a limiting block, a No. 2 spring piece and a mud removal pipe, the lifting plate is slidably installed on the circumferential surface of the cylindrical rod, the digging mechanism is fixedly penetrated on the top of the lifting plate, and the secondary limiting of the lifting plate can be quickly released through standardized operation, ensuring that the operator performs the digging operation after being fully prepared, which helps to improve the safety of the operation.

Description

Technical Field

[0001] The invention relates to the technical field of tree pit digging, in particular to a tree pit digging device used for sandy and gravelly land. Background Art

[0002] The tree pit digging device is a special equipment used to dig holes for planting trees. This equipment helps to reduce damage to the soil during the tree pit digging work, ensures that the trees can grow healthily, and adapts to the needs of modern gardening and agriculture.

[0003] The patent with patent announcement number CN221228211U relates to an electric tree pit digging device. In view of the existing lack of loosening devices and the difficulty in watering the pit when digging, the following solution is proposed, which includes a base plate, the top of which is fixedly connected with an L-shaped connecting plate and an iron frame, the top of the iron frame is fixedly connected with a handle, and one side of the base plate is fixedly provided with a fixed cone for fixing the base plate when digging a pit. This patent, through the use of loosening rollers, can loosen the soil at a designated location to prevent hard soil from making it difficult for transplanted trees to take root and affecting the survival rate of the trees, and can facilitate subsequent digging work to prevent hard soil from damaging the auger. Through the use of a water tank and a sprinkler, the digging location can be watered to improve the survival rate of transplanted trees and avoid long-term water shortages that reduce the survival rate of transplanted trees.

[0004] The above patent has the effect of avoiding long-term water shortage that reduces the survival rate of transplanted trees. Through the use of water tanks and sprinklers, the digging location can be irrigated to soften the hard soil, thereby reducing damage to the auger. However, when the auger is digging on sandy and gravel ground, due to the large amount of sand and gravel on the sandy and gravel ground, if the operator is not fully prepared before digging, he cannot effectively respond to emergencies, thereby increasing the risk of accidents and posing a threat to the safety of the operator. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a tree pit digging device for sandy and rocky land, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a tree pit digging device for sandy and rocky land, comprising a loading frame, a supporting angle is fixedly installed at the bottom of the loading frame, a wheel is rotatably penetrated on the surface of the loading frame, a cylindrical rod is fixedly installed on the inner wall of the loading frame, a slide groove is provided on the inner wall of the loading frame, a circular hole is provided on the circumferential surface of the cylindrical rod, and also comprises a pit digging device; wherein the pit digging device comprises a lifting plate, a digging mechanism, a gripping rod, a rectangular plate, a sliding rod, a carrying plate, an L-shaped plate, a No. 1 spring piece, a limiting block, a No. 2 spring piece and a mud removal pipe, the L-shaped plate is pushed to move in the direction of the No. 1 spring piece, the L-shaped plate moves to squeeze the No. 1 spring piece, and the No. 1 spring piece is deformed by being squeezed, the lifting plate is slidably installed on the circumferential surface of the cylindrical rod, and the digging mechanism is fixedly penetrated on the lifting plate The top of the plate, the gripping rod slides through the side of the lifting plate close to the circular hole, the rectangular plate is fixedly mounted on the circumferential surface of the gripping rod, the rectangular plate slides through the inner and outer walls of the lifting plate, the sliding rod is fixedly mounted on the surface of the lifting plate, the carrying plate is fixed on the side of the lifting plate away from the digging mechanism, the L-shaped plate slides through the inner and outer walls of the carrying plate, the No. 1 spring plate is arranged between the L-shaped plate and the carrying plate, the limit block slides through the inner and outer walls of the L-shaped plate, the No. 2 spring plate is arranged between the limit block and the L-shaped plate, the mud removal pipe is fixedly mounted on the bottom of the lifting plate, the gripping rod contacts the inner wall of the circular hole, the bottom of the mud removal pipe is provided with an inclined surface 1, and the movement of the lifting plate drives the mud removal pipe to move downward, and the inclined surface 1 of the mud removal pipe contacts the mud and sand adhering to the cylindrical rod during the movement.

[0007] According to the above technical solution, a rectangular groove is provided on one side of the L-shaped plate close to the rectangular plate, and the rectangular plate contacts the inner wall of the rectangular groove. The rectangular groove of the L-shaped plate continues to move and separates from the surface in contact with the rectangular plate, so that the limit imposed by the L-shaped plate on the rectangular plate is released, and the sliding rod contacts the inner wall of the sliding groove.

[0008] According to the above technical solution, a slot is provided on the side of the carrying plate away from the digging mechanism, and the limit block passes through the slot during movement, so that the carrying plate limits the limit block moved to the specified position, and an arc surface 1 is provided on the side of the limit block close to the slot, and the arc surface 1 contacts the inner wall of the carrying plate. The movement of the L-shaped plate drives the limit block to move in the direction of the No. 1 spring sheet, and the arc surface 1 of the limit block is separated from the surface in contact with the carrying plate during movement.

[0009] According to the above technical scheme, it also includes a limiting device and a stabilizing device; the limiting device includes a fixed frame, a movable plate, a blocking plate, a pull rod, a No. 1 spring, a gate-shaped plate, a T-shaped rod, a No. 2 spring and a linkage plate, the linkage plate moves to drive the T-shaped rod to move downward, the T-shaped rod moves to squeeze the No. 2 spring, and the No. 2 spring is deformed by the squeezing, the fixed frame is fixedly installed on the side of the loading frame close to the slide slot, the movable plate slides through the inner and outer walls of the fixed frame, the blocking plate is fixedly installed on the side of the movable plate close to the slide rod, the pull rod slides through the side of the movable plate away from the blocking plate, the No. 1 spring is arranged between the pull rod and the movable plate, the gate-shaped plate It is fixedly installed on the circumferential surface of the pull rod, and the T-shaped rod slides through the inner wall of the fixed frame. The second spring is arranged between the T-shaped rod and the fixed frame. The linkage plate is fixedly installed on the bottom of the T-shaped rod, and the linkage plate slides through the inner and outer walls of the fixed frame. A groove is provided on the top of the linkage plate. The sliding rod contacts the groove of the linkage plate during movement. The movement of the sliding rod applies thrust to the groove, and the linkage plate moves downward under the influence of the thrust. The top of the blocking plate is provided with an arc surface No. 2, which applies additional resistance to the moving sliding rod through the linkage plate. This additional resistance can reduce the shaking and instability of the sliding rod during operation, thereby ensuring a smoother excavation process.

[0010] According to the above technical solution, a hole groove is opened on one side of the fixed frame close to the door-shaped plate, and the door-shaped plate contacts the inner wall of the hole groove. The door-shaped plate separates from the hole groove during movement, so that the limit imposed by the fixed frame on the movable plate is released, and a connecting rod is fixedly installed on one side of the blocking plate close to the slide groove, and the connecting rod slides through the inner wall of the slide groove.

[0011] According to the above technical scheme, the stabilizing device includes a connecting frame, an elastic telescopic rod, a support column, a No. 3 spring, a circular ring, a long plate, a round block, a knocking plate and an L-shaped block. When the linkage plate moves, it contacts the free end of the elastic telescopic rod, and the movement of the linkage plate applies downward pressure to the elastic telescopic rod. The connecting frame is fixedly installed on the surface of the fixed frame, and a placement groove is provided on the side of the connecting frame away from the fixed frame. The elastic telescopic rod slides through the inner and outer walls of the connecting frame, the support column is fixedly installed on the bottom of the elastic telescopic rod, and the No. 3 spring is arranged between the support column and the connecting frame, the circular ring is fixedly installed on the circumferential surface of the elastic telescopic rod, the long plate is fixedly installed on the circumferential surface of the support column, the long plate is slidably installed on the inner wall of the placement groove, the circular block is fixedly installed on the side of the long plate close to the placement groove, the knocking plate is fixedly installed on the inner wall of the placement groove, and the L-shaped block is fixedly installed on the inner wall of the placement groove. The knocking plate itself has elasticity, and the round block moves to squeeze the knocking plate, and the knocking plate is deformed due to the squeezing.

[0012] According to the above technical solution, the size of the ring is adapted to the inner wall of the connecting frame, and a conical surface is provided at the bottom of the support column. The conical surface of the support column is inserted into the gravel during movement, so that the gravel provides support for the support column.

[0013] According to the above technical solution, the knocking piece is set to be arc-shaped, and the L-shaped block has an arc surface three on one side close to the knocking piece, and the arc surface three contacts the top of the knocking piece. The knocking piece is separated from the arc surface three of the L-shaped block during the bending process.

[0014] The present invention provides a tree pit digging device for sandy and rocky land, which has the following beneficial effects:

[0015] (1) In the tree pit excavation device used in sandy and gravelly land, the mud removal pipe moves to contact the mud and sand adhered to the cylindrical rod, and the inclined surface moves to scrape off the adhered mud and sand. By providing the inclined surface on the mud removal pipe, mud and sand are prevented from accumulating on the circumferential surface of the cylindrical rod, thereby ensuring that the digging mechanism can operate smoothly and reducing the burden of cleaning after excavation. The gripping rod moves and separates from the circular hole, so that the limit imposed by the cylindrical rod on the lifting plate is released. The secondary limit imposed on the lifting plate can be quickly released through standardized operation, ensuring that the operator performs the excavation operation after being fully prepared, which helps to improve the safety of the operation.

[0016] (2) In the tree pit excavation device for sandy and rocky land, the T-shaped rod is affected by the reaction force and exerts an upward pulling force on the linkage plate. The additional pulling force makes the operation more stable. The linkage plate exerts additional resistance on the moving slide bar. This additional resistance can reduce the shaking and instability of the slide bar during operation, ensuring a smoother excavation process. The fixed frame imposes a limit on the moving plate. At the same time, the excavation depth changes. By setting a blocking plate to remind the operator to dig in place, the position of the blocking plate is changed to adapt to the excavation of different depths, thereby reducing the error in depth judgment and improving the accuracy of excavation.

[0017] (3) In the tree pit excavation device for gravel ground, the conical surface of the support column is inserted into the gravel ground during movement, so that the gravel ground supports the support column. By setting an elastic telescopic rod, the support column can be stably inserted into the gravel ground to obtain support during excavation at different depths, effectively improving the applicability of the support column. The L-shaped block transmits vibration to the support column under the action of resonance, so that the support column can be inserted into the gravel ground more smoothly. Continuous vibration is generated by intermittent collision between the knocking piece and the L-shaped block, and then the vibration is transmitted to the moving support column, so that the support column can be smoothly inserted into the gravel ground with a lot of sand and gravel for support. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2This is a schematic diagram of the position structure of the carrying plate and the lifting plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the grip and the circular hole positions of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the pit digging device of the present invention;

[0022] Figure 5 It is a schematic diagram of the position structure of the slide bar and the linkage plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the restriction device of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the stabilizing device of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged structural diagram at A in the middle.

[0026] In the figure: 1. loading frame; 2. supporting angle; 3. wheel; 4. cylindrical rod; 5. lifting plate; 6. digging mechanism; 7. grip rod; 8. rectangular plate; 9. sliding rod; 10. carrying plate; 11. L-shaped plate; 12. No. 1 spring; 13. limiting block; 14. No. 2 spring; 15. mud removal pipe; 151. fixed frame; 152. moving plate; 153. blocking plate; 154. pulling rod; 155. No. 1 spring; 156. door-shaped plate; 157. T-shaped rod; 158. No. 2 spring; 159. linkage plate; 161. connecting frame; 162. elastic telescopic rod; 163. supporting column; 164. No. 3 spring; 165. circular ring; 166. long plate; 167. round block; 168. knocking piece; 169. L-shaped block. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 4One embodiment of the present invention is: a tree pit digging device for sandy and rocky land, comprising a loading frame 1, a supporting angle 2 is fixedly installed at the bottom of the loading frame 1, a wheel 3 is rotatably penetrated on the surface of the loading frame 1, a cylindrical rod 4 is fixedly installed on the inner wall of the loading frame 1, a slide groove is opened on the inner wall of the loading frame 1, and a circular hole is opened on the circumferential surface of the cylindrical rod 4, and a pit digging device is also included; wherein the pit digging device includes a lifting plate 5, a digging mechanism 6, a gripping rod 7, a rectangular plate 8, a sliding rod 9, a carrying plate 10, an L-shaped plate 11, a No. 1 spring piece 12, a limiting block 13, a No. 2 spring piece 14 and a mud removal pipe 15, the lifting plate 5 is slidably installed on the circumferential surface of the cylindrical rod 4, the digging mechanism 6 is fixedly penetrated on the top of the lifting plate 5, the gripping rod 7 slides through a side of the lifting plate 5 close to the circular hole, and the rectangular plate 8 is fixedly installed On the circumferential surface of the gripping rod 7, the rectangular plate 8 slides through the inner and outer walls of the lifting plate 5, the sliding rod 9 is fixedly installed on the surface of the lifting plate 5, the carrying plate 10 is fixed on the side of the lifting plate 5 away from the digging mechanism 6, the L-shaped plate 11 slides through the inner and outer walls of the carrying plate 10, the No. 1 spring piece 12 is arranged between the L-shaped plate 11 and the carrying plate 10, the limit block 13 slides through the inner and outer walls of the L-shaped plate 11, the No. 2 spring piece 14 is arranged between the limit block 13 and the L-shaped plate 11, the mud removal pipe 15 is fixedly installed at the bottom of the lifting plate 5, the gripping rod 7 is in contact with the inner wall of the circular hole, and the bottom of the mud removal pipe 15 is provided with an inclined surface 1. By providing an inclined surface 1 on the mud removal pipe 15, mud and sand are prevented from accumulating on the circumferential surface of the cylindrical rod 4, ensuring that the digging mechanism 6 can operate smoothly while reducing the burden of cleaning after excavation.

[0029] A rectangular groove is provided on one side of the L-shaped plate 11 close to the rectangular plate 8. The rectangular plate 8 contacts the inner wall of the rectangular groove, and the slide rod 9 contacts the inner wall of the slide groove. By providing the rectangular groove, it is ensured that the operator can control the movement of the handle 7 under standardized operation, which helps to improve the safety of the operation.

[0030] A slot is provided on the side of the carrying plate 10 away from the excavating mechanism 6, and an arc surface 1 is provided on the side of the limiting block 13 close to the slot. The arc surface 1 contacts the inner wall of the carrying plate 10. The secondary limit of the lifting plate 5 can be quickly released through standardized operation, ensuring that the operator can perform the excavation operation after being fully prepared, which helps to improve the safety of the operation.

[0031] When the present embodiment is working, the loading frame 1 is pushed to move to the predetermined position, the digging mechanism 6 is started, and then the L-shaped plate 11 is pushed to move in the direction of the first spring piece 12. The L-shaped plate 11 moves to squeeze the first spring piece 12. The first spring piece 12 is squeezed and deformed. The rectangular groove of the L-shaped plate 11 continues to move and separates from the surface in contact with the rectangular plate 8, so that the limit imposed by the L-shaped plate 11 on the rectangular plate 8 is released. At the same time, the movement of the L-shaped plate 11 drives the limit block 13 to move in the direction of the first spring piece 12. The arc surface of the limit block 13 is in contact with the loading plate 1 during the movement. 0 contact surface separation, so that the deformed No. 2 spring piece 14 is restored under the action of its own elasticity, the No. 2 spring piece 14 restores and drives the limit block 13 to move in the direction away from the lifting plate 5, and the limit block 13 passes through the card slot during the movement, so that the carrying plate 10 limits the limit block 13 moved to the specified position, after the limit is completed, the grip bar 7 is pulled to move in the direction away from the lifting plate 5, and the grip bar 7 moves to drive the rectangular plate 8 to move in the direction away from the lifting plate 5. At the same time, the grip bar 7 is separated from the surface in contact with the circular hole during the movement, so that the limit imposed on the lifting plate 5 by the cylindrical rod 4 is released, and the secondary limit imposed on the lifting plate 5 can be quickly released through standardized operation, ensuring that the operator can perform the excavation operation after being fully prepared, which is helpful to improve the safety of the operation, and the grip bar 7 is controlled to move downward, and the grip bar 7 moves to drive the lifting plate 5 to move downward, and the lifting plate 5 moves to drive the sliding bar 9 to move downward, and at the same time, the lifting plate 5 moves to drive the digging mechanism 6 to move downward, and the output end of the digging mechanism 6 contacts the sand and gravel ground, and the excavation operation begins. During the excavation process, the excavation mechanism 6 The shoveled mud and sand splash onto the circumferential surface of the cylindrical rod 4, causing the mud and sand to adhere to the surface of the cylindrical rod 4. At the same time, the movement of the lifting plate 5 drives the mud removal pipe 15 to move downward. The inclined surface 1 of the mud removal pipe 15 contacts the mud adhered to the cylindrical rod 4 during the movement. The inclined surface 1 continues to move to scrape off the adhered mud and sand, effectively reducing the impact of the mud on the lifting plate 5 when it moves. By providing an inclined surface 1 on the mud removal pipe 15, mud and sand are prevented from accumulating on the circumferential surface of the cylindrical rod 4, ensuring that the excavation mechanism 6 can operate smoothly while reducing the burden of cleaning after excavation.

[0032] See also Figure 1-Figure 8On the basis of the above embodiment, another embodiment of the present invention further includes a limiting device and a stabilizing device; the limiting device includes a fixed frame 151, a movable plate 152, a blocking plate 153, a pull rod 154, a No. 1 spring 155, a door-shaped plate 156, a T-shaped rod 157, a No. 2 spring 158 and a linkage plate 159, the fixed frame 151 is fixedly mounted on a side of the loading frame 1 close to the slide groove, the movable plate 152 slides through the inner and outer walls of the fixed frame 151, the blocking plate 153 is fixedly mounted on a side of the movable plate 152 close to the slide rod 9, the pull rod 154 slides through a side of the movable plate 152 away from the blocking plate 153, and the No. 1 spring 155 is arranged on the pull rod 154 and the movable plate 152, the door-shaped plate 156 is fixedly installed on the circumferential surface of the pull rod 154, the T-shaped rod 157 slides through the inner wall of the fixed frame 151, the second spring 158 is arranged between the T-shaped rod 157 and the fixed frame 151, the linkage plate 159 is fixedly installed at the bottom of the T-shaped rod 157, the linkage plate 159 slides through the inner and outer walls of the fixed frame 151, a groove is provided on the top of the linkage plate 159, and an arc surface 2 is provided on the top of the blocking plate 153. The linkage plate 159 applies additional resistance to the moving slide bar 9. This additional resistance can reduce the shaking and instability of the slide bar 9 during operation, thereby ensuring a smoother excavation process.

[0033] A hole groove is provided on one side of the fixed frame 151 close to the door-shaped plate 156, and the door-shaped plate 156 contacts the inner wall of the hole groove. A connecting rod is fixedly installed on one side of the blocking plate 153 close to the slide groove, and the connecting rod slides through the inner wall of the slide groove. The blocking plate 153 is set to remind the operator to dig in place, and then the position of the blocking plate 153 is changed to adapt to digging at different depths, thereby reducing the error of depth judgment and improving the accuracy of excavation.

[0034] The stabilizing device includes a connecting frame 161, an elastic telescopic rod 162, a support column 163, a No. 3 spring 164, a ring 165, a long plate 166, a round block 167, a knocking piece 168 and an L-shaped block 169. The connecting frame 161 is fixedly installed on the surface of the fixed frame 151. A placement groove is provided on a side of the connecting frame 161 away from the fixed frame 151. The elastic telescopic rod 162 slides through the inner and outer walls of the connecting frame 161. The support column 163 is fixedly installed at the bottom of the elastic telescopic rod 162. The No. 3 spring 164 is arranged between the support column 163 and the connecting frame 161. In between, the ring 165 is fixedly installed on the circumferential surface of the elastic telescopic rod 162, the long plate 166 is fixedly installed on the circumferential surface of the support column 163, the long plate 166 is slidably installed on the inner wall of the placement groove, the round block 167 is fixedly installed on the side of the long plate 166 close to the placement groove, the knocking piece 168 is fixedly installed on the inner wall of the placement groove, and the L-shaped block 169 is fixedly installed on the inner wall of the placement groove. The knocking piece 168 itself is elastic and can be automatically inserted into the sandy and gravel ground through the support column 163 when the operator controls the grip 7 to move, which helps to reduce complex operations and improve excavation efficiency.

[0035] The size of the ring 165 is adapted to the inner wall of the connecting frame 161, and a conical surface is provided at the bottom of the support column 163. The conical surface ensures that the support column 163 can be smoothly inserted into the sandy ground for support. Inserting it when excavating is about to take place can also facilitate the operator to quickly adjust the position of the loading frame 1 before excavation.

[0036] The striking piece 168 is arranged in an arc shape, and an arc surface three is provided on one side of the L-shaped block 169 close to the striking piece 168, and the arc surface three contacts the top of the striking piece 168. Continuous vibration is generated through intermittent collision between the striking piece 168 and the L-shaped block 169, and the vibration is then transmitted to the moving support column 163, so that the support column 163 can be smoothly inserted into the sandy and gravel ground for support.

[0037] When the present embodiment is working, the slide bar 9 contacts the groove of the linkage plate 159 during the movement, and the slide bar 9 applies a thrust to the groove. The linkage plate 159 moves downward under the influence of the thrust, and the linkage plate 159 moves to drive the T-shaped rod 157 to move downward. The T-shaped rod 157 moves to squeeze the No. 2 spring 158, and the No. 2 spring 158 is squeezed and deformed. The deformed No. 2 spring 158 applies a reaction force to the T-shaped rod 157 under the action of its own elasticity. The T-shaped rod 157 is affected by the reaction force and applies an upward pulling force to the linkage plate 159, and the amount The external pulling force makes the operator more stable when manipulating the grip 7. The slide bar 9 continues to move and contacts the arc surface 2 of the blocking plate 153. Since the fixed frame 151 applies a limit to the moving plate 152, the arc surface 2 blocks the moving slide bar 9. The slide bar 9 stops moving due to the blockage. At the same time, the excavation mechanism 6 completes the excavation of the depth. The linkage plate 159 applies additional resistance to the moving slide bar 9. This additional resistance can reduce the shaking and instability of the slide bar 9 during operation, ensuring a smoother excavation process. When adjusting the excavation depth, the pull rod 154 is pulled in front of the control handle 7 to move away from the movable plate 152. The movement of the pull rod 154 stretches the No. 1 spring 155. The No. 1 spring 155 is deformed by the stretching. At the same time, the movement of the pull rod 154 drives the gate-shaped plate 156 to move away from the movable plate 152. The gate-shaped plate 156 separates from the hole groove during the movement, so that the limit imposed by the fixed frame 151 on the movable plate 152 is released, and the control pull rod 154 moves downward. The movement of the pull rod 154 drives the movable plate 152 to move downward. 2. The blocking plate 153 moves downward. After the blocking plate 153 moves to the predetermined position, the pull rod 154 is pushed to reset. The pull rod 154 moves to drive the door-shaped plate 156 to move toward the moving plate 152. The door-shaped plate 156 moves and contacts the hole groove, so that the fixed frame 151 restores the limit imposed on the moving plate 152. At the same time, the excavation depth changes. By setting the blocking plate 153 to remind the operator to dig in place, the position of the blocking plate 153 is changed to adapt to the excavation of different depths, thereby reducing the error of depth judgment and improving the accuracy of excavation.

[0038] When the linkage plate 159 moves, it contacts the free end of the elastic telescopic rod 162. The linkage plate 159 moves to apply downward pressure on the elastic telescopic rod 162. Since the elastic force of the elastic telescopic rod 162 itself is greater than the elastic force of the No. 3 spring 164, the elastic telescopic rod 162 moves downward without contracting when under the influence of pressure. The elastic telescopic rod 162 moves to drive the support column 163 to move downward. The support column 163 moves to stretch the No. 3 spring 164. The No. 3 spring 164 is deformed by the stretching. At the same time, the conical surface of the support column 163 is inserted into the sand and gravel during the movement, so that the sand and gravel support the support column 163. The elastic telescopic rod 162 moves to drive the ring 165 to move downward. The ring 165 contacts the bottom of the inner wall of the connecting frame 161 during the movement. The connecting frame 161 blocks the movement of the ring 165, so that the linkage plate 159 continues to move to drive the free end of the elastic telescopic rod 162 to move downward. Through the support column 163, the The support column 163 is inserted into the sand and gravel to obtain support and improve the stability during excavation, and it is also convenient for the operator to quickly adjust the position of the loading frame 1 before excavation. The movement of the support column 163 drives the long plate 166 to move downward, and the movement of the long plate 166 drives the round block 167 to move downward. The round block 167 moves and contacts the top of the knocking piece 168. The round block 167 continues to move to squeeze the knocking piece 168 to bend downward. The knocking piece 168 is separated from the arc surface three of the L-shaped block 169 during the bending process. When the round block 167 and the knocking piece 168 are separated, the knocking piece 168 quickly recovers under the action of its own elasticity. The knocking piece 168 collides with the arc surface three during the rapid recovery process to generate vibration. The L-shaped block 169 transmits the vibration to the support column 163 under the action of resonance, so that the support column 163 can be more smoothly inserted into the sand and gravel. Continuous vibration is generated by the intermittent collision between the knocking piece 168 and the L-shaped block 169, and the support column 163 can be smoothly inserted into the sand and gravel for support.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tree pit digging device for sandy and rocky land, comprising a loading frame (1), characterized in that: The bottom of the loading frame (1) is fixedly mounted with a support angle (2), the surface of the loading frame (1) is rotatably penetrated by a wheel (3), the inner wall of the loading frame (1) is fixedly mounted with a cylindrical rod (4), the inner wall of the loading frame (1) is provided with a slide groove, the circumferential surface of the cylindrical rod (4) is provided with a circular hole, and further comprises a pit digging device, a limiting device and a stabilizing device; The digging device comprises a lifting plate (5), a digging mechanism (6), a gripping rod (7), a rectangular plate (8), a sliding rod (9), a carrying plate (10), an L-shaped plate (11), a first spring sheet (12), a limit block (13), a second spring sheet (14) and a mud removal pipe (15), wherein the lifting plate (5) is slidably mounted on the circumferential surface of the cylindrical rod (4), the digging mechanism (6) is fixedly penetrated through the top of the lifting plate (5), the gripping rod (7) is slidably penetrated through a side of the lifting plate (5) close to the circular hole, the rectangular plate (8) is fixedly mounted on the circumferential surface of the gripping rod (7), the rectangular plate (8) is slidably penetrated through the inner and outer walls of the lifting plate (5), and the sliding rod (9) is fixedly mounted on the circumferential surface of the gripping rod (7), the rectangular plate (8) is slidably penetrated through the inner and outer walls of the lifting plate (5), and the sliding rod (9) is fixedly mounted on the circumferential surface of the gripping rod (7). ) is fixedly mounted on the surface of the lifting plate (5), the carrying plate (10) is fixed on a side of the lifting plate (5) away from the digging mechanism (6), the L-shaped plate (11) slides through the inner and outer walls of the carrying plate (10), the first spring piece (12) is arranged between the L-shaped plate (11) and the carrying plate (10), the limit block (13) slides through the inner and outer walls of the L-shaped plate (11), the second spring piece (14) is arranged between the limit block (13) and the L-shaped plate (11), the desilting pipe (15) is fixedly mounted on the bottom of the lifting plate (5), the gripping rod (7) contacts the inner wall of the circular hole, and the bottom of the desilting pipe (15) is provided with an inclined surface 1; A rectangular groove is formed on one side of the L-shaped plate (11) close to the rectangular plate (8), the rectangular plate (8) contacts the inner wall of the rectangular groove, and the sliding rod (9) contacts the inner wall of the sliding groove; A slot is formed on a side of the carrying plate (10) away from the digging mechanism (6), and a first arc surface is formed on a side of the limiting block (13) close to the slot, wherein the first arc surface contacts the inner wall of the carrying plate (10); The limiting device comprises a fixed frame (151), a movable plate (152), a blocking plate (153), a pull rod (154), a first spring (155), a gate-shaped plate (156), a T-shaped rod (157), a second spring (158) and a linkage plate (159), wherein the fixed frame (151) is fixedly mounted on a side of the loading frame (1) close to the slide groove, the movable plate (152) slides through the inner and outer walls of the fixed frame (151), the blocking plate (153) is fixedly mounted on a side of the movable plate (152) close to the slide rod (9), and the pull rod (154) slides through a side of the movable plate (152) away from the blocking plate (153). The first spring (155) is arranged between the pull rod (154) and the movable plate (152), the door-shaped plate (156) is fixedly installed on the circumferential surface of the pull rod (154), the T-shaped rod (157) slides through the inner wall of the fixed frame (151), the second spring (158) is arranged between the T-shaped rod (157) and the fixed frame (151), the linkage plate (159) is fixedly installed at the bottom of the T-shaped rod (157), the linkage plate (159) slides through the inner and outer walls of the fixed frame (151), the top of the linkage plate (159) is provided with a groove, and the top of the blocking plate (153) is provided with an arc surface II; A hole groove is formed on one side of the fixed frame (151) close to the door-shaped plate (156), and the door-shaped plate (156) contacts the inner wall of the hole groove. A connecting rod is fixedly mounted on one side of the blocking plate (153) close to the slide groove, and the connecting rod slides through the inner wall of the slide groove.

2. A tree pit digging device for sandy and rocky land according to claim 1, characterized in that: The stabilizing device comprises a connecting frame (161), an elastic telescopic rod (162), a support column (163), a No. 3 spring (164), a ring (165), a long plate (166), a round block (167), a knocking piece (168) and an L-shaped block (169); the connecting frame (161) is fixedly mounted on the surface of the fixed frame (151); a placement groove is provided on a side of the connecting frame (161) away from the fixed frame (151); the elastic telescopic rod (162) slides through the inner and outer walls of the connecting frame (161); the support column (163) is fixedly mounted on the bottom of the elastic telescopic rod (162). The third spring (164) is arranged between the support column (163) and the connecting frame (161), the circular ring (165) is fixedly mounted on the circumferential surface of the elastic telescopic rod (162), the long plate (166) is fixedly mounted on the circumferential surface of the support column (163), the long plate (166) is slidably mounted on the inner wall of the placement groove, the round block (167) is fixedly mounted on a side of the long plate (166) close to the placement groove, the knocking piece (168) is fixedly mounted on the inner wall of the placement groove, and the L-shaped block (169) is fixedly mounted on the inner wall of the placement groove, and the knocking piece (168) itself has elasticity.

3. A tree pit digging device for sandy and rocky land according to claim 2, characterized in that: The size of the circular ring (165) is adapted to the inner wall of the connecting frame (161), and a conical surface is provided at the bottom of the supporting column (163).

4. A tree pit digging device for sandy and rocky land according to claim 2, characterized in that: The striking piece (168) is arranged in an arc shape, and a third arc surface is provided on a side of the L-shaped block (169) close to the striking piece (168), and the third arc surface is in contact with the top of the striking piece (168).

Images