Concrete pipe machining and grinding device

Abstract

The utility model relates to the technical field of concrete pipe machining, in particular to a concrete pipe machining and polishing device. The device comprises a motor, a driving grinding wheel, a driven grinding wheel and a grinding belt, the output end of the motor is detachably connected with the driving grinding wheel through a threaded shaft, and the tail end of the threaded shaft is provided with a limiting block matched with a limiting groove of the driving grinding wheel to achieve axial positioning. The driving grinding wheel is fixed through a first nut, and a limiting plate with a limiting pin is arranged to be matched with the grinding wheel pin hole to ensure circumferential transmission. Anti-skid lines are arranged on the outer edges of the driving grinding wheel and the driven grinding wheel respectively and form a double-face meshing structure with the annular grinding belt, and transmission stability is improved. A connecting frame in the supporting assembly keeps accurate alignment of the double grinding wheels, so that the grinding belt forms a stable annular movement track. A modularized connecting structure is adopted, the grinding wheel and the grinding belt are rapidly disassembled, assembled and replaced, the problem that traditional equipment is difficult to maintain is solved, meanwhile, the grinding precision and the working efficiency are guaranteed, the maintainability of the equipment is remarkably improved, and the service life of the equipment is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of concrete pipe processing technology, and in particular to a concrete pipe processing and grinding device. Background Technology

[0002] ① Traditional concrete pipe surface treatment technology relies on fixed grinding wheels. These wheels are connected to the motor output shaft via flange bolts, and their rigid bodies form a localized point or line contact grinding pattern with the curved surface of the concrete pipe. Because the curvature of the grinding wheel's working surface is not adjustable and its rotation trajectory is a single circular motion, the grinding coverage of the pipe surface is severely insufficient, especially in the area where the curvature abruptly changes at the junction of the pipe body and the flange end, creating a continuous grinding blind zone. Operators must repeatedly adjust the equipment position and angle for supplementary grinding, and the equipment repositioning process consumes a significant amount of effective working time, significantly limiting overall efficiency. Simultaneously, the vibration from the motor operation is directly transmitted to the grinding wheel body through the rigid flange structure, inducing periodic, uneven grinding marks on the concrete pipe surface, making it difficult to guarantee consistent surface roughness.

[0003] ② The improved technology adopts a dual-grinding wheel structure in conjunction with a ring-shaped grinding belt working mode. The active grinding wheel and the driven grinding wheel form a span structure through the support components, so that the middle section of the grinding belt forms an extended plane. The active grinding wheel surface is provided with a first anti-slip texture that deeply engages the inner side of the belt body, and the driven grinding wheel surface has a second anti-slip texture that simultaneously engages the outer side of the belt body. The dual-engagement structure expands the grinding contact area while maintaining the stability of the belt body operation, achieving large-area coverage grinding of the pipe surface.

[0004] ③ However, such improved dual-wheel grinding structures are typically difficult to disassemble, as the driving wheel and drive shaft, and the driven wheel and support frame are solidified into inseparable rigid bodies: the flange of the driving wheel and the motor output shaft are integrally fastened with fasteners that are difficult to remove, and the driven wheel bearing housing and support frame are fused together by continuous welds. This design results in a loss of ease of replacement for individual components. When the working surface of the grinding wheel wears or the grinding belt ages, the operator needs to spend a lot of time separating the components, which can easily cause damage to related structures and significantly increase equipment downtime. Utility Model Content

[0005] The purpose of this invention is to provide a concrete pipe processing and grinding device to solve the problem of non-disassembly caused by the integrated rigid connection of the double grinding wheel structure.

[0006] To achieve the above objectives, this utility model provides a concrete pipe processing and grinding device. The device includes a motor, an output end of which is provided with a threaded shaft. The threaded shaft passes through a support assembly and is then fixedly mounted with a limiting block. The threaded shaft passes through a connecting hole and is connected to a first nut via an external thread, thereby connecting the limiting block to a limiting groove. The connecting hole is located in the middle of the active grinding wheel, and the limiting groove is located on the side of the active grinding wheel adjacent to the connecting hole. A limiting plate is clamped between the first nut and the active grinding wheel. A limiting pin is provided on one side of the limiting plate, and the limiting pin is connected to a pin hole located on the side of the active grinding wheel opposite to the limiting groove. A first anti-slip texture is provided on the outer side of the active grinding wheel.

[0007] The support assembly includes a driven grinding wheel and a connecting frame. The driven grinding wheel has a second anti-slip texture on its radially outer side, and a grinding belt is movably installed on the outer side of the driven grinding wheel and the driving grinding wheel.

[0008] The driven grinding wheel is equipped with a limit rod through a bearing in the middle. One end of the limit rod passes through a limit hole, and after passing through the limit hole, the limit rod is connected to the second nut through an external thread.

[0009] The limiting hole is located at one end of the connecting frame, and the end of the connecting frame away from the limiting hole is fixedly installed at the output end of the motor and at a certain gap from the outside of the threaded shaft.

[0010] The connecting frame is fixedly installed with a support rod on the side away from the motor, and a handle is fixedly installed on the top side of the support rod. A rubber pad is provided on the radially outer side of the handle.

[0011] A handle is fixedly installed on the side of the motor away from the threaded shaft, and a switch is fixedly installed on the side of the handle away from the motor.

[0012] The grip has a power cord on the side away from the switch, and a battery is installed inside the grip. The battery is electrically connected to the motor and the power cord via flexible wires.

[0013] This utility model discloses a concrete pipe processing and grinding device, which solves the problem of difficult assembly and disassembly in traditional technologies through an innovative modular connection structure. The core of the device lies in the power transmission system formed by the motor output end and the active grinding wheel via a threaded shaft, allowing for quick assembly and disassembly. A limiting block located after the threaded shaft passes through the support assembly forms an axial positioning engagement with a limiting groove on the active grinding wheel, ensuring transmission accuracy while retaining the possibility of rapid disassembly. The active grinding wheel is sleeved on the threaded shaft through a connecting hole and axially fixed by a first nut. This threaded connection significantly improves the ease of assembly and disassembly compared to traditional flange bolt connections. The matching design of the limiting plate and its limiting pin with the pin hole on the active grinding wheel ensures reliable circumferential transmission while enabling rapid positioning and replacement of the grinding wheel. The first anti-slip groove on the outer edge of the active grinding wheel forms a deep engagement with the annular grinding belt, and together with the second anti-slip groove on the driven grinding wheel, forms a double-sided interlocking structure, ensuring the stability of the grinding belt operation and expanding the grinding contact area. The connecting frame in the support assembly keeps the active and driven grinding wheels precisely aligned, allowing the grinding belt to form a stable annular motion trajectory. This structural design enables rapid replacement of the main working components (driving grinding wheel, driven grinding wheel, and grinding belt) while ensuring grinding accuracy, significantly reducing equipment maintenance time. At the same time, the modular connection method avoids the structural damage risk caused by traditional welding or permanent fastening, significantly improving the maintainability and service life of the equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the electric motor according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the active grinding wheel in an embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram of the planar structure of the electric motor according to an embodiment of the present invention.

[0019] In the diagram: 101, motor; 102, threaded shaft; 103, limiting block; 104, connecting hole; 105, first nut; 106, driving grinding wheel; 107, limiting groove; 108, limiting plate; 109, limiting pin; 110, pin hole; 111, first anti-slip texture; 112, driven grinding wheel; 113, connecting frame; 114, second anti-slip texture; 115, grinding belt; 116, limiting rod; 117, limiting hole; 118, second nut; 119, support rod; 120, handle; 121, rubber pad; 122, grip; 123, switch; 124, power cord; 125, battery. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Please see Figures 1-4 .

[0022] This utility model provides a concrete pipe processing and grinding device, which includes a motor 101, a threaded shaft 102 installed at the output end of the motor 101, a limiting block 103 fixed after the threaded shaft 102 passes through a support assembly, and the threaded shaft 102 passes through the connecting hole 104 of the active grinding wheel 106 and is fastened by a first nut 105. The limiting block 103 is embedded in the limiting groove 107 of the active grinding wheel 106. A limiting plate 108 is sandwiched between the first nut 105 and the active grinding wheel 106, and the limiting pin 109 of the limiting plate 108 is inserted into the pin hole 110 of the active grinding wheel 106. The outer edge of the active grinding wheel 106 is provided with a first anti-slip texture 111. The support assembly includes a driven grinding wheel 112 and a connecting frame 113. The outer edge of the driven grinding wheel 112 is provided with a second anti-slip texture 114. A grinding belt 115 is sleeved on the outer side of the active grinding wheel 106 and the driven grinding wheel 112. A limiting rod 116 is mounted on the center of the driven grinding wheel 112 via a bearing. The limiting rod 116 passes through the limiting hole 117 of the connecting frame 113 and is fixed by a second nut 118. One end of the connecting frame 113 is fixed to the output end of the motor 101, and the other end is equipped with a support rod 119. A handle 120 with a rubber pad 121 is provided on the top of the support rod 119. A grip 122 is installed at the tail of the motor 101. The grip 122 is equipped with a switch 123 and a power cord 124, and an internal battery 125 supplies power to the motor 101. In use, the operator holds the grip 122 and the carrying handle 120, and turns on the switch 123 to make the motor 101 drive the threaded shaft 102 to rotate. The driving grinding wheel 106 drives the grinding belt 115 to circulate around the driven grinding wheel 112, and the grinding belt 115 is used to efficiently grind the surface of the concrete pipe.

[0023] Working principle: The motor 101 drives the threaded shaft 102 to rotate, which in turn drives the active grinding wheel 106 to rotate. The active grinding wheel 106 is fixed to the threaded shaft 102 through the connecting hole 104 and is axially positioned by the cooperation of the limiting block 103 and the limiting groove 107, preventing the active grinding wheel 106 from shifting during high-speed rotation. The first nut 105 is tightened on the threaded shaft 102, pressing the limiting plate 108 against one side of the active grinding wheel 106. The limiting pin 109 on the limiting plate 108 is inserted into the pin hole 110 of the active grinding wheel 106, further restricting the circumferential rotation of the active grinding wheel 106 and ensuring the stability of power transmission. The first anti-slip groove 111 on the outer edge of the active grinding wheel 106 is in close contact with the inner surface of the grinding belt 115, driving the grinding belt 115 to move through friction. The driven grinding wheel 112 is mounted on the limiting rod 116 via a bearing. The limiting rod 116 passes through the limiting hole 117 of the connecting frame 113 and is fixed by the second nut 118, allowing the driven grinding wheel 112 to rotate freely and maintain parallel alignment with the driving grinding wheel 106. The grinding belt 115 wraps around the outside of the driving grinding wheel 106 and the driven grinding wheel 112, using the second anti-slip texture 114 on both to increase contact friction and prevent slippage. The connecting frame 113 is fixed to the output end of the motor 101. The support rod 119 and the handle 120 provide gripping points during operation, and the rubber pad 121 enhances gripping comfort. After the motor 101 is started, the driving grinding wheel 106 drives the grinding belt 115 to rotate at high speed, uniformly grinding the surface of the concrete pipe. The switch 123 on the handle 122 controls the start and stop of the motor 101, and the power cord 124 or the internal battery 125 supplies power to the motor 101. This design achieves efficient and stable grinding action through the collaboration of multiple components. The limiting structure and anti-slip texture ensure transmission accuracy, and the support components balance rigidity and portability. The overall structure is compact and easy to operate.

[0024] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A concrete pipe processing and grinding device, characterized in that: The system includes an electric motor (101), the output end of which is provided with a threaded shaft (102). The threaded shaft (102) passes through the support assembly and is fixedly mounted with a limiting block (103). The threaded shaft (102) passes through a connecting hole (104) and is connected to a first nut (105) via an external thread, thereby connecting the limiting block (103) with a limiting groove (107). The connecting hole (104) is located in the middle of the active grinding wheel (106), and the limiting groove (107) is located in the middle of the active grinding wheel (106). A limiting plate (108) is clamped between the first nut (105) and the active grinding wheel (106) on the side adjacent to the connecting hole (104). A limiting pin (109) is provided on one side of the limiting plate (108), and the limiting pin (109) is connected to the pin hole (110). The pin hole (110) is opened on the side of the active grinding wheel (106) opposite to the limiting groove (107). A first anti-slip texture (111) is provided on the outer side of the active grinding wheel (106). The support assembly includes a driven grinding wheel (112) and a connecting frame (113). The driven grinding wheel (112) has a second anti-slip texture (114) on its radially outer side. A grinding belt (115) is movably installed on the outer side of the driven grinding wheel (112) and the driving grinding wheel (106).

2. The concrete pipe processing and grinding device as described in claim 1, characterized in that: A limiting rod (116) is installed in the middle of the driven grinding wheel (112) through a bearing. One end of the limiting rod (116) passes through the limiting hole (117). After passing through the limiting hole (117), the limiting rod (116) is connected to the second nut (118) through an external thread.

3. The concrete pipe processing and grinding device as described in claim 2, characterized in that: The limiting hole (117) is opened at one end of the connecting frame (113), and the end of the connecting frame (113) away from the limiting hole (117) is fixedly installed at the output end of the motor (101) and a certain gap away from the outside of the threaded shaft (102).

4. The concrete pipe processing and grinding device as described in claim 3, characterized in that: A support rod (119) is fixedly installed on the side of the connecting frame (113) away from the motor (101). A handle (120) is fixedly installed on the top side of the support rod (119). A rubber pad (121) is provided on the radially outer side of the handle (120).

5. The concrete pipe processing and grinding device as described in claim 4, characterized in that: A handle (122) is fixedly installed on the side of the motor (101) away from the threaded shaft (102), and a switch (123) is fixedly installed on the side of the handle (122) away from the motor (101).

6. The concrete pipe processing and grinding device as described in claim 5, characterized in that: The grip (122) has a power cord (124) on the side away from the switch (123). The grip (122) has a battery (125) inside. The battery (125) is electrically connected to the motor (101) and the power cord (124) respectively through flexible wires.

Images