Polishing device for cable-stayed bridge construction

Abstract

The utility model discloses a polishing device for construction of a cable-stayed bridge, which belongs to the technical field of construction equipment and comprises an angle grinder body internally provided with a driving motor, a polishing sheet for polishing a workpiece and a control mechanism for controlling the driving motor to start and stop, and the control mechanism is arranged on the angle grinder body. The grinding sheet is detachably arranged at the end part of the output shaft on the angle grinder body; the control mechanism comprises a compression spring, a movable shell and a control switch capable of controlling the driving motor to start and stop; a groove is formed in the angle grinder body; according to the angle grinder, by arranging the movable shell, when the angle grinder body is held by a hand, the movable shell can be extruded by the hand, then the movable shell can move into the groove and extrude the control switch, then the driving motor is started to drive the grinding piece to grind, and after the angle grinder body is released from the hand, the compression spring can elastically reset to push the movable shell to be separated from the control switch; and the power-off effect can be achieved, the abrasive disc is prevented from rotating continuously, and safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction equipment, and in particular relates to a grinding device for the construction of a cable-stayed bridge. Background Art

[0002] Angle grinder is a kind of grinding tool used for cutting and grinding fiberglass. Angle grinder is a portable electric tool that uses fiberglass to cut and grind. It is mainly used for cutting, grinding and brushing metal and stone. When constructing a cable-stayed bridge, an angle grinder is needed to grind the edges or welding parts of the workpiece to ensure that the workpiece can meet the construction requirements.

[0003] When in use, it is generally necessary to hold the angle grinder body, control the contact between the grinding disc and the workpiece, and use the high-speed rotation of the grinding disc to achieve the grinding effect. At present, the control switch on the existing angle grinders is mostly located on the side of the angle grinder body away from the grinding disc. When in use, it is necessary to turn on the control switch in advance, and then hold the angle grinder body for grinding. For example, in the prior art represented by the comparative document angle grinder (publication number CN 219131846 U), the control switch is located on the top of the angle grinder body and close to one end of the grinding disc. In actual use, after holding the angle grinder body, the hand will be away from the control switch. Therefore, it is necessary to ensure that the control switch is always in the power-on state before grinding can be performed. However, when the high-speed rotating grinding disc is blocked by friction, the angle grinder body is easy to deflect, causing the angle grinder to easily fall out of the hand, so that the existing angle grinder cannot be stopped in time after it falls out of the hand, which is easy to cause harm to the construction personnel;

[0004] In summary, the utility model solves the existing problems by designing a grinding device for the construction of a cable-stayed bridge. Utility Model Content

[0005] In order to solve the problem that the existing angle grinder cannot be stopped in time after being separated from the hand, which is easy to cause harm to the construction workers, the purpose of the utility model is to provide a grinding device for cable-stayed bridge construction to solve the above-mentioned problem.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grinding device for cable-stayed bridge construction, comprising an angle grinder body with a driving motor arranged inside, a grinding disc for grinding a workpiece, and a control mechanism for controlling the opening and closing of the driving motor, wherein the control mechanism is arranged on the angle grinder body, and the grinding disc is detachably arranged on the end of an output shaft on the angle grinder body;

[0007] The control mechanism includes a compression spring, a movable shell and a control switch capable of controlling the opening and closing of a driving motor. A groove is provided on the angle grinder body. The control switch and the compression spring are both fixedly arranged in the groove, and the control switch is electrically connected to the driving motor in the angle grinder body. The movable shell is slidably arranged in the groove, and one end of the compression spring away from the angle grinder body is fixedly connected to the movable shell, so that when the compression spring is contracted under force, an inner wall of the movable shell connected to the compression spring forms an extrusion against the control switch.

[0008] As a preferred solution of the utility model, a power switch is also fixedly provided on the angle grinder body, and the power switch is electrically connected to the drive motor in the angle grinder body, so that the power switch can control the start and stop of the drive motor.

[0009] As a preferred solution of the utility model, a fixing pin is fixedly provided on the angle grinder body, and a paddle is rotatably sleeved on the fixing pin. When the movable shell is completely moved into the groove, the paddle can rotate with the fixing pin as the axis until it contacts the side of the movable shell away from the compression spring.

[0010] As a preferred solution of the utility model, a limiting cylinder is fixedly arranged in the groove, the compression spring is located in the limiting cylinder, the length of the limiting cylinder is smaller than the length of the compression spring, and when the compression spring contracts and the movable shell is completely moved into the groove, the limiting cylinder contacts a side of the movable shell close to the compression spring.

[0011] As a preferred solution of the utility model, a connecting tube is fixedly provided on the angle grinder body, the output shaft on the angle grinder body rotates and passes through the connecting tube, a protective cover is sleeved on the connecting tube, and the protective cover is located between the angle grinder body and the grinding disc.

[0012] As a preferred solution of the utility model, the protective cover is rotatably sleeved on the connecting tube, an annular groove is provided on the connecting tube, a connecting ring is rotatably arranged in the annular groove, the protective cover is fixedly sleeved on the connecting ring, and a positioning mechanism is also provided on the protective cover, and the positioning mechanism is used to fix the protective cover after rotation.

[0013] As a preferred solution of the utility model, the positioning mechanism includes an outer shell, a positioning spring, a moving block and a positioning block. The outer shell is fixedly arranged on the protective cover. The positioning spring, the moving block and the positioning block are all slidably arranged in the outer shell. The moving block is located between the positioning spring and the positioning block. The positioning block is fixedly connected to the moving block. A plurality of positioning grooves are provided in the annular groove. The end of the positioning block away from the moving block slides through the protective cover and the connecting ring and is inserted into the positioning groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The grinding device for the construction of a cable-stayed bridge is provided with a movable shell. When holding the angle grinder body, the hand can squeeze the movable shell, so that the movable shell can move into the groove, and squeeze the control switch, so as to start the driving motor to drive the grinding disc to grind. After the angle grinder body is released from the hand, the compression spring can elastically reset and push the movable shell to separate from the control switch, so as to achieve the effect of power off, avoid the continuous rotation of the grinding disc, and improve safety.

[0016] The grinding device for the construction of a cable-stayed bridge is provided with a protective cover so that the protective cover can protect the grinding disc to prevent the grinding disc from breaking and accidentally injuring construction workers, and can also prevent residues after grinding from accidentally injuring construction workers. Rotating the protective cover can adjust the angle between the protective cover and the angle grinder body, making it easy to adjust the protective position of the protective cover, and is suitable for grinding when the angle grinder is at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the connecting tube in the utility model;

[0020] Figure 4 It is a cross-sectional structural schematic diagram of the connecting tube in the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of A enlarged in the utility model.

[0022] In the figure: 1. positioning mechanism; 101. housing; 102. positioning spring; 103. moving block; 104. positioning block; 105. positioning groove; 2. angle grinder body; 3. grinding disc; 4. control mechanism; 401. compression spring; 402. moving housing; 403. control switch; 404. groove; 5. fixing pin; 6. paddle; 7. limiting cylinder; 8. power switch; 9. connecting cylinder; 10. protective cover; 11. annular groove; 12. connecting ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Example: See Figure 1-5 The utility model provides a grinding device for the construction of a cable-stayed bridge, comprising an angle grinder body 2, a grinding disc 3 for grinding a workpiece, and a control mechanism 4 for controlling the opening and closing, wherein the control mechanism 4 is arranged on the angle grinder body 2, and the grinding disc 3 is detachably arranged on the end of the output shaft of the angle grinder body 2;

[0025] In this embodiment, reference Figure 1-2 The control mechanism 4 includes a compression spring 401, a movable shell 402 and a control switch 403 capable of controlling opening and closing. A groove 404 is provided on the angle grinder body 2. The control switch 403 and the compression spring 401 are both fixedly arranged in the groove 404, and the control switch 403 is electrically connected to the angle grinder body 2. The movable shell 402 is slidably arranged in the groove 404. One end of the compression spring 401 away from the angle grinder body 2 is fixedly connected to the movable shell 402, so that when the compression spring 401 is contracted by force, an inner wall of the movable shell 402 connected to the compression spring 401 faces the control switch 403 to form a When the angle grinder body 2 is held in the hand, the hand can squeeze the movable shell 402, so that the movable shell 402 can move into the groove 404. At this time, the compression spring 401 accumulates force and contracts, so that the movable shell 402 can contact the control switch 403 and squeeze the control switch 403, so as to achieve the effect of starting, that is, the grinding disc 3 can be ground at the same time. After the movable shell 402 is separated from the hand, the compression spring 401 elastically resets, and can push the movable shell 402 to separate from the control switch 403, so as to achieve the effect of turning off the control motor, thereby preventing the grinding disc 3 from rotating continuously, thereby improving safety.

[0026] Among them, a power switch 8 is also fixedly arranged on the angle grinder body 2, and the power switch 8 is electrically connected to the angle grinder body 2, so that the power switch 8 can control the on and off, and the power switch 8 and the control switch 403 can achieve the effect of double switch control, that is, when the power switch 8 and the control switch 403 are pressed or released at the same time, it is turned off, and when only one of the power switch 8 and the control switch 403 is pressed, it is started;

[0027] The angle grinder body 2 is fixedly provided with a fixing pin 5, and a paddle 6 is rotatably sleeved on the fixing pin 5. When the movable shell 402 is completely moved into the groove 404, the paddle 6 can be rotated with the fixing pin 5 as the axis until it contacts the side of the movable shell 402 away from the compression spring 401. The paddle 6 is rotated so that it can rotate around the fixing pin 5, and then the paddle 6 can be moved above the movable shell 402, so that the movable shell 402 can always be pressed on the control switch 403, and then the opening and closing can be controlled only by the power switch 8, so as to achieve the effect of single switch control.

[0028] In this example, see Figure 2A limiting cylinder 7 is fixedly arranged in the groove 404, and the compression spring 401 is located in the limiting cylinder 7. The length of the limiting cylinder 7 is smaller than the length of the compression spring 401. When the compression spring 401 contracts and the moving shell 402 is completely moved into the groove 404, the limiting cylinder 7 contacts a side of the moving shell 402 close to the compression spring 401. When the moving shell 402 moves into the groove 404 to squeeze the compression spring 401, the compression spring 401 can be contracted into the limiting cylinder 7, which can prevent the compression spring 401 from being twisted and improve stability.

[0029] In this example, see Figure 3-5 A connecting tube 9 is fixedly arranged on the angle grinder body 2, and the output shaft on the angle grinder body 2 rotates and penetrates the connecting tube 9. A protective cover 10 is sleeved on the connecting tube 9. The protective cover 10 is located between the angle grinder body 2 and the grinding disc 3, so that the protective cover 10 can shield the grinding disc 3, thereby achieving a safety protection effect;

[0030] The protective cover 10 is rotatably sleeved on the connecting tube 9, and an annular groove 11 is provided on the connecting tube 9. A connecting ring 12 is rotatably provided in the annular groove 11. The protective cover 10 is fixedly sleeved on the connecting ring 12. A positioning mechanism 13 is also provided on the protective cover 10. The positioning mechanism 13 is used to fix the rotated protective cover 10. By rotating the protective cover 10, the angle of the protective cover 10 can be adjusted. When the angle grinder body 2 is at different grinding angles, the protective cover 10 is rotated to be located between the grinding disc 3 and the construction personnel, which can play the effect of adjusting the protective position, providing practicality and safety.

[0031] Among them, the positioning mechanism 13 includes a shell 101, a positioning spring 102, a moving block 103 and a positioning block 104. The shell 101 is fixedly arranged on the protective cover 10. The positioning spring 102, the moving block 103 and the positioning block 104 are all slidably arranged in the shell 101. The moving block 103 is located between the positioning spring 102 and the positioning. The positioning block 104 is fixedly connected to the moving block 103. A plurality of positioning grooves 105 are opened in the annular groove 11. The end of the positioning block 104 away from the moving block 103 slides through the protective cover 10 and the connecting ring 12 and is inserted into the positioning groove 105. When the protective cover 10 is rotated, the protective cover 10 can drive the positioning spring 102, the moving block 103 and the positioning block 104 to move through the shell 101, so that the positioning block 104 can rotate relative to the positioning groove 105. The positioning spring 102 can drive the positioning block 104 to be inserted into the positioning groove 105 through the moving block 103, which plays a fixed positioning effect, avoids the protective cover 10 from rotating at will, and improves stability.

[0032] Based on the above conditions, the workflow designed using this solution is as follows:

[0033] When in use, first hold the angle grinder body 2 with the hand so that the hand can press the movable shell 402, and then the movable block 103 moves into the groove 404 to squeeze the control switch 403 to achieve the starting effect, and the grinding disc 3 can be controlled by the angle grinder body 2 to grind. The protective cover 10 can be rotated to rotate on the connecting tube 9 through the connecting ring 12 to achieve the effect of adjusting the protection angle of the protective cover 10. The positioning spring 102 can push the positioning block 104 through the movable block 103 to be inserted into the positioning groove 105, so that the protective cover 10 can be fixed. If the angle grinder body 2 is separated from the hand, the compression spring 401 can be reset by the spring to push the movable shell 402 to separate from the control switch 403, so that it can be closed.

[0034] 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 grinding device for cable-stayed bridge construction, characterized in that: The invention comprises an angle grinder body (2) arranged inside, a grinding disc (3) for grinding a workpiece, and a control mechanism (4) for controlling opening and closing, wherein the control mechanism (4) is arranged on the angle grinder body (2), and the grinding disc (3) is detachably arranged on the end of an output shaft of the angle grinder body (2); The control mechanism (4) comprises a compression spring (401), a movable shell (402) and a control switch (403) capable of controlling opening and closing. A groove (404) is provided on the angle grinder body (2). The control switch (403) and the compression spring (401) are both fixedly arranged in the groove (404), and the control switch (403) is electrically connected to the angle grinder body (2). The movable shell (402) is slidably arranged in the groove (404). One end of the compression spring (401) away from the angle grinder body (2) is fixedly connected to the movable shell (402), so that when the compression spring (401) is contracted under force, an inner wall of the movable shell (402) connected to the compression spring (401) squeezes the control switch (403).

2. A grinding device for cable-stayed bridge construction according to claim 1, characterized in that: A power switch (8) is also fixedly arranged on the angle grinder body (2), and the power switch (8) is electrically connected to the angle grinder body (2), so that the power switch (8) can be controlled to be turned on and off.

3. A grinding device for cable-stayed bridge construction according to claim 2, characterized in that: A fixing pin (5) is fixedly provided on the angle grinder body (2), and a paddle (6) is rotatably sleeved on the fixing pin (5); when the movable shell (402) is completely moved into the groove (404), the paddle (6) can be rotated with the fixing pin (5) as the axis until it contacts a side of the movable shell (402) away from the compression spring (401).

4. The grinding device for cable-stayed bridge construction according to claim 1, characterized in that: A limiting cylinder (7) is fixedly arranged in the groove (404), and the compression spring (401) is located in the limiting cylinder (7). The length of the limiting cylinder (7) is smaller than the length of the compression spring (401). When the compression spring (401) contracts and the movable shell (402) completely moves into the groove (404), the limiting cylinder (7) contacts a side surface of the movable shell (402) close to the compression spring (401).

5. The grinding device for cable-stayed bridge construction according to claim 1, characterized in that: A connecting tube (9) is fixedly arranged on the angle grinder body (2); an output shaft on the angle grinder body (2) rotatably penetrates the connecting tube (9); a protective cover (10) is sleeved on the connecting tube (9); and the protective cover (10) is located between the angle grinder body (2) and the grinding disc (3).

6. A grinding device for cable-stayed bridge construction according to claim 5, characterized in that: The protective cover (10) is rotatably sleeved on the connecting tube (9); an annular groove (11) is provided on the connecting tube (9); a connecting ring (12) is rotatably arranged in the annular groove (11); the protective cover (10) is fixedly sleeved on the connecting ring (12); a positioning mechanism (1) is also provided on the protective cover (10); the positioning mechanism (1) is used to fix the protective cover (10) after rotation.

7. A grinding device for cable-stayed bridge construction according to claim 6, characterized in that: The positioning mechanism (1) comprises a housing (101), a positioning spring (102), a moving block (103) and a positioning block (104); the housing (101) is fixedly arranged on the protective cover (10); the positioning spring (102), the moving block (103) and the positioning block (104) are all slidably arranged in the housing (101); the moving block (103) is located between the positioning spring (102) and the positioning spring; the positioning block (104) is fixedly connected to the moving block (103); a plurality of positioning grooves (105) are formed in the annular groove (11); an end of the positioning block (104) away from the moving block (103) slides through the protective cover (10) and the connecting ring (12) and is inserted into the positioning groove (105).

Images