Non-excavation roller engineering palm piece with high stability

Abstract

The utility model discloses a non - excavation toothed wheel engineering palm piece with high stability, including tooth arm, the front end of tooth arm is installed toothed wheel, the rear end of tooth arm upper end outer surface is provided with first mounting hole, the number of first mounting hole is two groups, two groups first mounting hole all install the hexagon socket head cap screw, is provided with anti -drop limiting structure between two groups first mounting hole, anti -drop limiting structure includes limiting baffle arm, limiting component, connecting shaft and limiting disc, the number of limiting component is two groups, two groups limiting component are fixed in the both ends outer surface of limiting baffle arm. The utility model discloses a non - excavation toothed wheel engineering palm piece with high stability, through the setting of anti -drop limiting structure, effectively prevent the loosening of hexagon socket head cap screw and fall off, significantly improved the installation stability and construction safety of toothed wheel palm piece.

Description

Technical Field

[0001] This utility model relates to the field of roller cone palm bearing technology, specifically a non-excavation roller cone engineering palm bearing with high stability. Background Technology

[0002] In trenchless engineering, roller cone blades are key components of drilling systems, primarily used for breaking rock, soil, or hard strata. Traditionally, roller cone blades are fixed to the drill arm with bolts (such as countersunk hex bolts). However, during actual construction, due to vibration, impact, or prolonged high-load operation, these bolts are prone to loosening or even falling off, leading to decreased installation stability of the roller cone blades and consequently affecting construction efficiency and safety.

[0003] In the prior art, for example, Chinese patent CN204920807U discloses a roller cone palm plate structure that is fixed with two sets of bolts. However, this design lacks an effective anti-loosening mechanism, and the bolts are still at risk of loosening under complex working conditions, which may lead to displacement or failure of the roller cone palm plate, or even cause equipment damage or construction accidents.

[0004] Therefore, we propose a trenchless toothed cone engineering palm plate with high stability. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a non-excavation roller cone engineering palm plate with high stability. By setting an anti-fall-off limiting structure, it effectively prevents the loosening and falling off of the internal hexagon countersunk bolts, significantly improving the installation stability and construction safety of the roller cone palm plate, and effectively solving the problems in the background technology.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a non-excavation roller cone engineering palm plate with high stability, including a roller arm, a roller cone installed at the front end of the roller arm, a first mounting hole provided at the rear end of the upper outer surface of the roller arm, the number of the first mounting holes being two sets, each set of the first mounting holes being fitted with an internal hexagon countersunk bolt, an anti-fall-off limiting structure provided between the two sets of the first mounting holes, the anti-fall-off limiting structure including a limiting arm, a limiting component, a connecting shaft and a limiting disc, the number of the limiting component being two sets, the two sets of the limiting components being fixed to the outer surfaces of both ends of the limiting arm, the limiting component including an anti-fall-off blocking block, a circular mounting groove, an anti-rotation limiting block, a guide rod, a guide hole, a pinch block and a helical spring, and a regular hexagonal insert fixedly installed in the middle of the lower outer surface of the anti-rotation limiting block, a second mounting hole provided at the upper part of the roller arm, a cylindrical limiting cavity provided at the lower part of the second mounting hole, the second mounting hole being located between the two sets of the first mounting holes.

[0009] Preferably, the connecting shaft is fixed at the middle of the lower outer surface of the limiting arm, and the limiting disc is fixed at the lower outer surface of the connecting shaft.

[0010] Preferably, the connecting shaft passes through the second mounting hole, the outer wall of the connecting shaft is rotatably connected to the second mounting hole, and the outer wall of the limiting disc is rotatably connected to the cylindrical limiting cavity.

[0011] Preferably, in the limiting assembly, one outer surface of the anti-falling stop block is fixedly connected to one outer surface of the limiting arm, the circular mounting groove is opened on the lower outer surface of the anti-falling stop block, the guide hole is opened in the middle of the upper outer surface of the anti-falling stop block, the lower end of the guide hole communicates with the middle of the upper end of the circular mounting groove, the guide rod passes through the guide hole, the pinch block is fixed on the upper outer surface of the guide rod, and the outer wall of the guide rod and the guide hole are slidably connected.

[0012] Preferably, the lower outer surface of the guide rod is fixedly connected to the middle of the upper outer surface of the anti-rotation limiting block, the helical spring is movably sleeved on the lower outer wall of the guide rod, the helical spring is fixed between the upper outer surface of the anti-rotation limiting block and the middle of the upper end of the circular mounting groove, and the upper outer surface of the anti-rotation limiting block is elastically connected to the upper end of the circular mounting groove through the helical spring.

[0013] Preferably, when the anti-fall-off stop block is located above the first mounting hole, the anti-rotation limiting block is inserted into the upper part of the inner cavity of the first mounting hole by the action of the helical spring, and the regular hexagonal insert is inserted into the regular hexagonal groove at the top of the internal hexagon countersunk bolt.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a non-excavation roller cone engineering palm blade with strong stability, which has the following beneficial effects:

[0016] 1. This non-excavation roller cone bearing with high stability, through the setting of an anti-drop limiting structure, after the internal hexagon countersunk bolts are installed, uses anti-drop stop blocks, regular hexagonal inserts and anti-rotation limiting blocks to limit the internal hexagon countersunk bolts, preventing them from loosening or falling off under vibration or impact conditions, thereby greatly improving the installation reliability and service life of the roller cone bearing.

[0017] 2. This non-excavation toothed wheel engineering palm plate with high stability has an anti-rotation limit block that is pressed against the upper part of the first mounting hole cavity by the elastic force of the helical spring to prevent the limit arm from rotating. At the same time, the regular hexagonal insert is embedded in the regular hexagonal groove of the bolt to prevent the internal hexagon countersunk bolt from rotating and to avoid loosening, thus achieving a more stable anti-loosening effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a non-excavation roller cone engineering palm plate with high stability according to this utility model.

[0019] Figure 2 This is a partial structural diagram of a non-excavation roller cone engineering palm plate with high stability according to the present invention.

[0020] Figure 3 This is a schematic diagram of the anti-fall-off limiting structure in a trenchless toothed wheel engineering palm plate with high stability according to this utility model.

[0021] Figure 4 This is a side cross-sectional view of a limiting component in a trenchless toothed roller plate according to the present invention.

[0022] In the diagram: 1. Tooth arm; 2. Tooth wheel; 3. First mounting hole; 4. Socket head cap screw; 5. Anti-fall-off limiting structure; 6. Second mounting hole; 7. Cylindrical limiting cavity; 8. Limiting arm; 9. Limiting assembly; 10. Connecting shaft; 11. Limiting disc; 12. Anti-fall-off stop block; 13. Circular mounting groove; 14. Anti-rotation limiting block; 15. Guide rod; 16. Guide hole; 17. Pinch block; 18. Helical spring; 19. Regular hexagonal insert block. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] This embodiment is a trenchless roller cone engineering palm plate with high stability.

[0025] like Figure 1-4As shown, the device includes a toothed arm 1, with a toothed wheel 2 mounted on its front end. A first mounting hole 3 is provided at the rear end of the upper outer surface of the toothed arm 1. There are two sets of first mounting holes 3, each containing a countersunk head hexagon bolt 4. An anti-detachment limiting structure 5 is provided between the two sets of first mounting holes 3. The anti-detachment limiting structure 5 includes a limiting arm 8, a limiting component 9, a connecting shaft 10, and a limiting disc 11. There are two sets of limiting components 9. Fixed on the outer surfaces of both ends of the limiting arm 8, the limiting component 9 includes an anti-falling stop block 12, a circular mounting groove 13, an anti-rotation limiting block 14, a guide rod 15, a guide hole 16, a pinch block 17, and a coil spring 18. A regular hexagonal insert 19 is fixedly installed in the middle of the lower outer surface of the anti-rotation limiting block 14. A second mounting hole 6 is opened in the upper part of the toothed arm 1, and a cylindrical limiting cavity 7 is provided in the lower part of the second mounting hole 6. The second mounting hole 6 is located between the two sets of first mounting holes 3.

[0026] The connecting shaft 10 is fixed to the middle of the lower outer surface of the limiting arm 8, and the limiting disc 11 is fixed to the lower outer surface of the connecting shaft 10; the connecting shaft 10 passes through the second mounting hole 6, and the outer wall of the connecting shaft 10 is rotatably connected to the second mounting hole 6, and the outer wall of the limiting disc 11 is rotatably connected to the cylindrical limiting cavity 7; one side of the outer surface of the anti-falling stop block 12 in the limiting assembly 9 is fixedly connected to one end of the outer surface of the limiting arm 8, the circular mounting groove 13 is opened on the lower outer surface of the anti-falling stop block 12, the guide hole 16 is opened in the middle of the upper outer surface of the anti-falling stop block 12, the lower end of the guide hole 16 communicates with the middle of the upper end of the circular mounting groove 13, the guide rod 15 passes through the guide hole 16, and the pinch block 17 is fixed to the guide rod 15. The upper outer surface of the guide rod 15 is slidably connected to the outer wall of the guide rod 15 and the guide hole 16. The lower outer surface of the guide rod 15 is fixedly connected to the middle of the upper outer surface of the anti-rotation limiting block 14. The helical spring 18 is movably sleeved on the lower outer wall of the guide rod 15. The helical spring 18 is fixed between the upper outer surface of the anti-rotation limiting block 14 and the middle of the upper end of the circular mounting groove 13. The upper outer surface of the anti-rotation limiting block 14 is elastically connected to the upper end of the circular mounting groove 13 through the helical spring 18. When the anti-dropping stop block 12 is located above the first mounting hole 3, the anti-rotation limiting block 14 is inserted into the upper part of the inner cavity of the first mounting hole 3 by the action of the helical spring 18. The regular hexagonal insert 19 is inserted into the regular hexagonal groove at the top of the internal hexagon countersunk bolt 4.

[0027] It should be noted that this utility model is a non-excavation roller cone engineering palm plate with high stability. The toothed arm 1, roller cone 2, first mounting hole 3 and hexagon countersunk head bolt 4 described in this article are all prior art, which can be effectively known to those skilled in the art, and will not be described in detail here. After the toothed arm 1 is installed by the hexagon countersunk head bolt 4, the pinch block 17 is pulled, and the pinch block 17 drives the guide rod 15 to rise along the guide hole 16. The guide rod 15 drives the anti-rotation limiting block 14 to squeeze the circular mounting groove 13, so that the anti-rotation limiting block 14 enters the circular mounting groove 13. Then the limiting arm 8 is rotated. The limiting arm 8 rotates around the connecting shaft 10. After the two sets of limiting components 9 rotate to the upper part of the first mounting hole 3, the pinch block 17 is released. Due to the reaction force of the helical spring 18, the anti-rotation limiting block 14 is inserted into the first mounting hole 3. The anti-drop stop block 12 is located at the upper part of the first mounting hole 3, and the anti-rotation limit block 14 is limited in the first mounting hole 3 to prevent the limit arm 8 from rotating. The anti-drop stop block 12 can prevent the internal hexagon countersunk bolt 4 from falling off. If the internal hexagon countersunk bolt 4 becomes loose, it will inevitably rotate. Then, the internal hexagon countersunk bolt 4 will push out the anti-rotation limit block 14. After the internal hexagon countersunk bolt 4 is limited by the anti-drop limit structure 5, the regular hexagonal insert 19 is inserted into the regular hexagonal groove at the upper part of the internal hexagon countersunk bolt 4 to prevent the internal hexagon countersunk bolt 4 from rotating. The guide rod 15 and the guide hole 16 are both rectangular structures to prevent the internal hexagon countersunk bolt 4 from forcibly driving the anti-rotation limit block 14 and the regular hexagonal insert 19 to rotate.

[0028] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A non-excavation roller cone engineering palm plate with high stability, comprising a roller arm (1), wherein a roller cone (2) is mounted on the front end of the roller arm (1), and a first mounting hole (3) is provided on the rear end of the upper outer surface of the roller arm (1), wherein the number of the first mounting holes (3) is two sets, and a countersunk head bolt (4) is installed in each of the two sets of the first mounting holes (3), characterized in that: A non-detachment limiting structure (5) is provided between the two sets of first mounting holes (3). The non-detachment limiting structure (5) includes a limiting arm (8), a limiting component (9), a connecting shaft (10), and a limiting disc (11). There are two sets of limiting components (9). The two sets of limiting components (9) are fixed on the outer surfaces of both ends of the limiting arm (8). The limiting component (9) includes a non-detachment blocking block (12), a circular mounting groove (13), a non-rotation limiting block (14), a guide rod (15), a guide hole (16), a pinch block (17), and a spiral spring (18). A regular hexagonal insert (19) is fixedly installed in the middle of the lower outer surface of the non-rotation limiting block (14). A second mounting hole (6) is opened in the upper part of the toothed arm (1). A cylindrical limiting cavity (7) is provided in the lower part of the second mounting hole (6). The second mounting hole (6) is located between the two sets of first mounting holes (3).

2. The strong stability non-excavation roller engineering palm piece according to claim 1, characterized in that: The connecting shaft (10) is fixed in the middle of the lower outer surface of the limiting arm (8), and the limiting disc (11) is fixed in the lower outer surface of the connecting shaft (10).

3. The strong stability non-excavation roller engineering palm piece according to claim 2, characterized in that: The connecting shaft (10) passes through the second mounting hole (6), and the outer wall of the connecting shaft (10) is rotatably connected to the second mounting hole (6). The outer wall of the limiting disc (11) is rotatably connected to the cylindrical limiting cavity (7).

4. The strong stability non-excavation roller engineering palm piece according to claim 3, characterized in that: The outer surface of one side of the anti-falling stop block (12) in the limiting component (9) is fixedly connected to the outer surface of one end of the limiting arm (8). The circular mounting groove (13) is opened on the lower outer surface of the anti-falling stop block (12). The guide hole (16) is opened in the middle of the upper outer surface of the anti-falling stop block (12). The lower end of the guide hole (16) is connected to the middle of the upper end of the circular mounting groove (13). The guide rod (15) passes through the guide hole (16). The pinch block (17) is fixed on the upper outer surface of the guide rod (15). The outer wall of the guide rod (15) and the guide hole (16) are slidably connected.

5. The strong stability non-excavation roller engineering palm piece according to claim 4, characterized in that: The lower outer surface of the guide rod (15) is fixedly connected to the middle of the upper outer surface of the anti-rotation limiting block (14). The helical spring (18) is movably sleeved on the lower outer wall of the guide rod (15). The helical spring (18) is fixed between the upper outer surface of the anti-rotation limiting block (14) and the middle of the upper end of the circular mounting groove (13). The upper outer surface of the anti-rotation limiting block (14) is elastically connected to the upper end of the circular mounting groove (13) through the helical spring (18).

6. The strong stability non-excavation roller engineering palm piece according to claim 5, characterized in that: When the anti-fall-off block (12) is located above the first mounting hole (3), the anti-rotation limiting block (14) is inserted into the upper part of the inner cavity of the first mounting hole (3) by the action of the helical spring (18), and the regular hexagonal insert (19) is inserted into the regular hexagonal groove at the top of the internal hexagon countersunk bolt (4).

Images