A drill bit for a dredging and sand pumping machine
Patent Information
- Application Number
- CN202522483003.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-24
AI Technical Summary
[0005]针对现有技术的不足，本实用新型提供了一种清淤抽沙机的钻头，可以解决拆卸不便、使用阻力过大的问题
1、通过在固定头的连接下，将钻头组件与液压电机连接固定，并将固定头与固定筒的螺旋紧固方向与钻头组件的转动方向设置为相反，保证液压电机驱动钻头组件转动时，其连接状态的可靠准确。
Smart Images
Figure CN224858932U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand dredging machine technology, specifically a drill bit for a dredging and sand dredging machine. Background Technology
[0002] A sand dredging machine is a mechanical device that can simultaneously crush and dredge sand. It is mainly used to clean up silt accumulated in rivers, pipelines, ponds and other facilities.
[0003] The drill bits of existing sand dredging machines are generally fixed or integrally constructed. When maintenance is required, the bolts and other fixing parts on the drill bit need to be disassembled, which is too costly and time-consuming. In addition, the drill bits of existing sand dredging machines are cylindrical in shape and rely on the outer spiral blades to rotate and clean. The exposed bolts and other parts cause the rotation to generate greater resistance.
[0004] Therefore, a drill bit for a dredging and sand pumping machine is proposed to solve the problems mentioned above. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a drill bit for a dredging and sand pumping machine, which can solve the problems of inconvenient disassembly and excessive resistance during use.
[0006] To achieve the above objectives, the present invention provides the following technical solution: including a machine body and a support arm disposed on the machine body, wherein a hydraulic motor is disposed at the end of the support arm and a drill bit assembly is disposed at the output end of the hydraulic motor; The output end of the hydraulic motor is fixedly provided with a fixing head. The drill bit assembly includes an upper connecting plate and a fixing cylinder for support. The fixing cylinder is fixedly inserted through the middle of the upper connecting plate and is threadedly connected to the fixing head. The upper connecting plate is fitted with several supporting inclined plates on its outer periphery. The supporting inclined plates are arranged in a cylindrical array on the outer periphery of the upper connecting plate. A cleaning tooth is provided on one side of the supporting inclined plate, and several through holes are provided through the middle of the cleaning tooth.
[0007] Preferably, the supporting inclined plate is set at an angle to the cleaning tooth, and a hollow triangular plate is set at an angle on one side of the connection between the supporting inclined plate and the cleaning tooth. An upper locking member is fixedly set at the upper end of the supporting inclined plate, and a limit locking member is inserted into one side of the upper locking member.
[0008] Preferably, the cleaning teeth are serrated, and the upper snap-fitting component snaps in the opposite direction to the cleaning teeth.
[0009] Preferably, the outer periphery of the upper connecting plate is recessed with an insertion groove, the upper locking member is inserted into the upper connecting plate through the groove, and the limiting locking member is located on the upper surface of the upper connecting plate.
[0010] Preferably, the hollowed-out triangular plates face the axis of the center of the upper connecting plate, and several hollowed-out triangular plates are simultaneously inserted into the lower connecting plate. The lower connecting plate has an insertion groove on its outer periphery, and the lower half of the hollowed-out triangular plates is inserted into the groove.
[0011] Preferably, the outer peripheral groove of the upper connecting plate and the outer peripheral groove of the lower connecting plate face the same direction, and the lower connecting plate and the upper connecting plate are located on the same axis.
[0012] Preferably, the inner angles of the supporting inclined plate, the cleaning teeth, and the hollow triangular plate form acute angles, and a plurality of reinforcing ribs are provided in the acute angle area. The reinforcing ribs are fixedly connected to the supporting inclined plate, the cleaning teeth, and the hollow triangular plate.
[0013] Compared with the prior art, this utility model provides a drill bit for a dredging and sand pumping machine, which has the following beneficial effects: 1. By connecting the fixed head, the drill bit assembly is fixed to the hydraulic motor, and the spiral tightening direction of the fixed head and the fixed cylinder is set to be opposite to the rotation direction of the drill bit assembly, so as to ensure the reliability and accuracy of the connection state when the hydraulic motor drives the drill bit assembly to rotate.
[0014] 2. By setting multiple through holes on the cleaning teeth, water can flow out through the through holes when the teeth rotate, reducing the resistance encountered by the cleaning teeth, further improving the overall rotation efficiency of the drill bit assembly, and reducing the cost of use.
[0015] 3. With the combined support of the upper and lower connecting plates, the drill bit assembly is in a stable and strong mortise and tenon connection state.
[0016] 4. Under the action of inertia, the cleaning teeth push the support inclined plate and the upper clamping part to move into the groove of the upper connecting plate, and push the hollow triangular plate to move into the groove of the lower connecting plate. Combined with the thrust received by the cleaning teeth when rotating, it can further push the support inclined plate and the hollow triangular plate to insert and fit together, so that the connection strength of the internal insertion part of the drill bit assembly is greater when it continues to rotate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure of the drill bit assembly of this utility model; Figure 3 This is a schematic diagram of the overall structure of the drill bit assembly of this utility model; Figure 4 This is an exploded view of the drill bit assembly of this utility model; Figure 5 This is a side view of the drill bit assembly of this utility model; Figure 6 This is a bottom view of the drill bit assembly of this utility model; Figure 7 This is a top view of the drill bit assembly of this utility model; Figure 8 This is a front view structural diagram of the drill bit assembly of this utility model.
[0018] In the diagram: 1. Machine body; 2. Support arm; 3. Hydraulic motor; 301. Fixed head; 4. Drill bit assembly; 401. Upper connecting plate; 402. Fixed cylinder; 403. Lower connecting plate; 404. Support inclined plate; 405. Cleaning teeth; 406. Through hole; 407. Upper locking connector; 408. Limiting locking connector; 409. Reinforcing rib. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Example: Please see Figure 1 - Figure 4 The drill bit of a dredging and sand pumping machine in this embodiment includes a body 1 and a support arm 2 disposed on the body 1. A hydraulic motor 3 is disposed at the end of the support arm 2, and a drill bit assembly 4 is disposed at the output end of the hydraulic motor 3. The output end of the hydraulic motor 3 is fixedly provided with a fixing head 301. The drill bit assembly 4 includes an upper connecting plate 401 for support and a fixing cylinder 402. The fixing cylinder 402 is fixedly inserted through the middle of the upper connecting plate 401 and is threadedly connected to the fixing head 301. Several support inclined plates 404 are snapped onto the outer periphery of the upper connecting plate 401. The support inclined plates 404 are arranged in a cylindrical array on the outer periphery of the upper connecting plate 401. A cleaning tooth 405 is provided on one side of the support inclined plate 404. Several through holes 406 are provided through the middle of the cleaning tooth 405. First, the drive and specific connection methods inside the body 1, as well as the corresponding sand-dredging structure, are well-known technologies in this field, and therefore are not described in detail in this embodiment. By connecting the fixed head 301, the drill bit assembly 4 is connected and fixed to the hydraulic motor 3, and the spiral fastening direction of the fixed head 301 and the fixed cylinder 402 is set to be opposite to the rotation direction of the drill bit assembly 4, so as to ensure that the connection state is reliable and accurate when the hydraulic motor 3 drives the drill bit assembly 4 to rotate. Furthermore, by setting the connection method between the support inclined plate 404 and the upper connecting plate 401 to a snap-fit, the combination of the upper snap-fit part 407 and the limiting snap-fit part 408 creates a mortise and tenon connection, ensuring the connection strength while reducing unnecessary fixing components, reducing the overall weight of the drill bit assembly 4, and ensuring its efficient rotation. By setting multiple through holes 406 on the cleaning tooth 405, water can flow out through the through holes 406 when it rotates, reducing the resistance on the cleaning tooth 405, further improving the overall rotation efficiency of the drill bit assembly 4, and reducing the cost of use. Furthermore, with the inclined combination of multiple support plates 404, the drill bit assembly 4 has an overall conical structure. This structure is narrow at the bottom and wide at the top, so that the lowest contact position is at a certain angle, which can improve the initial crushing effect of the drill bit assembly 4 during use. Under the overall conical structure of the drill bit assembly 4, the resistance generated during its rotation is minimized as much as possible, ensuring the high efficiency of the drill bit assembly 4.
[0021] Please see Figure 4 - Figure 8 The support inclined plate 404 and the cleaning tooth 405 are set at an angle. A hollow triangular plate is set at an angle on one side of the connection between the support inclined plate 404 and the cleaning tooth 405. An upper locking member 407 is fixedly set on the upper end of the support inclined plate 404. A limit locking member 408 is inserted into one side of the upper locking member 407. The cleaning teeth 405 are serrated, and the upper snap-fit part 407 snaps in the opposite direction to the cleaning teeth 405. The outer periphery of the upper connecting plate 401 is recessed and has an insertion groove. The upper locking member 407 is inserted into the upper connecting plate 401 through the groove, and the limiting locking member 408 is located on the upper surface of the upper connecting plate 401. The hollow triangular plates face the center axis of the upper connecting plate 401. Several hollow triangular plates are simultaneously inserted into the lower connecting plate 403. The lower connecting plate 403 has an insertion groove on its outer periphery. The lower half of the hollow triangular plates is inserted into the groove. The outer peripheral groove of the upper connecting plate 401 and the outer peripheral groove of the lower connecting plate 403 face the same direction, and the lower connecting plate 403 and the upper connecting plate 401 are located on the same axis. The supporting inclined plate 404, the cleaning teeth 405 and the inner angle of the hollow triangular plate form an acute angle, and a number of reinforcing ribs 409 are provided in the area of the acute angle. The reinforcing ribs 409 are fixedly connected to the supporting inclined plate 404, the cleaning teeth 405 and the hollow triangular plate. With the simultaneous support of the upper connecting plate 401 and the lower connecting plate 403, the installation positions of the inclined plate 404 and the cleaning teeth 405 are provided with a synchronous upper and lower limit effect, forming a double upper and lower limit effect. With the upper snap-fit 407 inserted into the groove of the upper connecting plate 401, the insertion area is increased while ensuring the insertion strength. The limit snap-fit 408 limits from above, further ensuring the strength of the connection position above the inclined plate 404. Based on the inclined setting of the hollow triangular plate itself, it is matched with the groove of the lower connecting plate 403 for insertion. Based on the setting of the groove, the hollow triangular plate can make deep insertion contact with the lower connecting plate 403, thereby increasing the insertion strength at that point. Finally, with the combined support of the upper connecting plate 401 and the lower connecting plate 403, the drill bit assembly 4 is in a stable and strong mortise and tenon connection state. Based on the fact that the groove on the lower connecting plate 403 and the groove on the upper connecting plate 401 face the same direction and are opposite to the rotation direction of the cleaning teeth 405, the cleaning teeth 405 perform crushing work when the drill bit assembly 4 rotates. Under the action of inertia, the cleaning teeth 405 push the support inclined plate 404 and the upper snap-fit piece 407 to move into the groove of the upper connecting plate 401, and push the hollow triangular plate to move into the groove of the lower connecting plate 403. Combined with the thrust received by the cleaning teeth 405 when rotating, it can further push the support inclined plate 404 and the hollow triangular plate to insert and fit together, so that the connection strength of the internal insertion part of the drill bit assembly 4 is greater when it continues to rotate. Based on the fact that the support inclined plate 404, the cleaning teeth 405, and the hollow triangular plate are set at an angle, and can be manufactured by combination or integral construction, the support inclined plate 404 is inserted into the upper snap-fit part 407 at an angle, the hollow triangular plate is inserted into the part at an angle, and the cleaning teeth 405 is used at a breaking angle. With the support of multiple reinforcing ribs 409, the stability of the insertion state of the support inclined plate 404 and the cleaning teeth 405 during rotation and the compressive strength during rotation are ensured. With the cleaning teeth 405 in a rack-like configuration and the teeth facing the crushing direction, it is convenient to crush the sludge. Combined with the through holes 406 located near the cleaning teeth 405, water can flow out simultaneously when the cleaning teeth 405 rotates, ensuring the strength of the cleaning teeth 405 while reducing the resistance it receives. Furthermore, a certain gap is provided between two adjacent support inclined plates 404 and through holes 406 to ensure water flow while facilitating maintenance and cleaning by staff, and to prevent the accumulation of impurities such as mud and sand at the device connection points, which could cause corrosion and damage.
[0022] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A drill bit for a dredging and sand pumping machine, characterized in that: Includes a body (1) and a support arm (2) disposed on the body (1), wherein a hydraulic motor (3) is disposed at the end of the support arm (2), and a drill bit assembly (4) is disposed at the output end of the hydraulic motor (3); The output end of the hydraulic motor (3) is fixedly provided with a fixing head (301). The drill bit assembly (4) includes an upper connecting plate (401) for support and a fixing cylinder (402). The fixing cylinder (402) is fixedly inserted through the middle of the upper connecting plate (401). The fixing cylinder (402) is threadedly connected to the fixing head (301). The upper connecting plate (401) is provided with a plurality of supporting inclined plates (404) snapped on its outer periphery. The plurality of supporting inclined plates (404) are distributed in a cylindrical array on the outer periphery of the upper connecting plate (401). A cleaning tooth (405) is provided on one side of the supporting inclined plate (404), and a plurality of through holes (406) are provided through the middle of the cleaning tooth (405).
2. The drill bit of a dredging and sand pumping machine according to claim 1, characterized in that: The supporting inclined plate (404) is set at an angle to the cleaning tooth (405). A hollow triangular plate is set at an angle on one side of the connection between the supporting inclined plate (404) and the cleaning tooth (405). An upper snap fastener (407) is fixedly set on the upper end of the supporting inclined plate (404). A limit snap fastener (408) is inserted into one side of the upper snap fastener (407).
3. The drill bit of a dredging and sand pumping machine according to claim 2, characterized in that: The cleaning teeth (405) are serrated, and the upper snap-fitting part (407) snaps in the opposite direction to the cleaning teeth (405).
4. The drill bit of a dredging and sand pumping machine according to claim 2, characterized in that: The outer periphery of the upper connecting plate (401) is recessed and has an insertion groove. The upper snap-fit (407) is inserted into the upper connecting plate (401) through the groove. The limiting snap-fit (408) is located on the upper surface of the upper connecting plate (401).
5. The drill bit of a dredging and sand pumping machine according to claim 4, characterized in that: The hollow triangular plates face the axis of the center of the upper connecting plate (401), and several hollow triangular plates are simultaneously inserted into the lower connecting plate (403). The outer periphery of the lower connecting plate (403) is provided with an insertion groove, and the lower half of the hollow triangular plates is inserted into the groove.
6. The drill bit of a dredging and sand pumping machine according to claim 5, characterized in that: The outer peripheral groove of the upper connecting plate (401) and the outer peripheral groove of the lower connecting plate (403) face the same direction, and the lower connecting plate (403) and the upper connecting plate (401) are located on the same axis.
7. The drill bit of a dredging and sand pumping machine according to claim 2, characterized in that: The supporting inclined plate (404), the cleaning teeth (405) and the inner angle of the hollow triangular plate form an acute angle, and a number of reinforcing ribs (409) are provided in the area of the acute angle. The reinforcing ribs (409) are fixedly connected to the supporting inclined plate (404), the cleaning teeth (405) and the hollow triangular plate.