Building wall surface grooving device

Abstract

The utility model discloses a building wall surface grooving device, which relates to the technical field of building grooving tool equipment, and comprises a first T-shaped frame, a first mounting plate, a second mounting plate, a second T-shaped frame, a frame body, a circular saw, an arc-shaped dustproof plate, a main shaft, a driving mechanism, a width adjusting mechanism and a rotating mechanism, the two circular saws are driven by the width adjusting mechanism to move, the arc-shaped dustproof plate is driven by the rotating mechanism to turn over, the width adjusting mechanism of the equipment can adjust the distance between the two circular saws, so that grooves with different widths can be cut, the rotating mechanism of the equipment can drive the arc-shaped dustproof plate to rotate, and the arc-shaped dustproof plate is driven by the rotating mechanism to rotate. When the arc-shaped dustproof plate rotates to the position above the two circular saws, it can be guaranteed that dust generated in the wall cutting process of the circular saws is blocked by the arc-shaped dustproof plate, when the arc-shaped dustproof plate rotates to the front sides of the two circular saws, the two circular saws can be prevented from being exposed outside, and safety is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building grooving tool equipment technical field, specifically related to a building wall grooving device. BACKGROUND

[0002] In the process of building construction, recesses can be made on the wall to meet the needs of embedding pipelines and various embedded furniture in the wall, and the recesses are usually reserved in advance in consideration of the later decoration of the wall.

[0003] In the prior art, a circular saw is usually used to make grooves in the wall, the edge lines of the reserved recesses are drawn in advance using a marker, and then the circular saw is used to cut along the lines drawn by the marker, and the wall structure in the middle of the lines is knocked out after cutting. The traditional circular saw has many drawbacks in use. Since at least two edge lines are needed for grooving, it is necessary to saw at least twice along the edge lines, which is relatively troublesome. In addition, since the width of the groove is different, the traditional single circular saw cannot adjust the cutting width and can only rely on the edge lines drawn in advance. If cutting is failed, the wall will be damaged.

[0004] To solve the above problems, a device capable of adjusting the cutting width and only needing to cut once to make grooves is proposed. UTILITY MODEL CONTENTS

[0005] The utility model provides a building wall grooving device for the above problems, solves the problems in the prior art that a circular saw is usually used to make grooves in the wall, the edge lines of the reserved recesses are drawn in advance using a marker, and then the circular saw is used to cut along the lines drawn by the marker, and the wall structure in the middle of the lines is knocked out after cutting. The traditional circular saw has many drawbacks in use. Since at least two edge lines are needed for grooving, it is necessary to saw at least twice along the edge lines, which is relatively troublesome. In addition, since the width of the groove is different, the traditional single circular saw cannot adjust the cutting width and can only rely on the edge lines drawn in advance. If cutting is failed, the wall will be damaged.

[0006] The utility model adopts the technical scheme of: containing first T type frame, first installation board, second installation board, second T type frame, frame body, pull handle, auxiliary handle, circular saw, arc dust plate, main shaft, drive mechanism, width adjusting mechanism, rotating mechanism;

[0007] The horizontal rod of the first T type frame is fixed with a second T type frame at the lower end of each end, and the vertical rod end of each second T type frame is fixed to the lower end of the horizontal rod of the first T type frame.

[0008] The two crossbars of the second T-shaped frame are rotatably connected by the same main shaft, and two circular saws are slidably sleeved on the main shaft respectively;

[0009] The spindle is driven to rotate by a drive mechanism;

[0010] The two circular saws are each driven to move by a width adjustment mechanism;

[0011] The outer sides of the two circular saws are movably provided with the same arc-shaped dustproof plate, which is driven to flip by a rotating mechanism;

[0012] The lower ends of the vertical rods of the first T-shaped frame are respectively fixed with a first mounting plate and a second mounting plate;

[0013] The width adjustment mechanism is located between the first mounting plate and the second mounting plate;

[0014] A frame is fixedly provided at the lower left end of the crossbar of the second T-shaped frame located on the rear side, and the drive mechanism is movably disposed within the frame.

[0015] A lifting handle is fixedly provided on the upper left end of the vertical rod of the first T-shaped frame, and an auxiliary handle is fixedly provided on the outer wall of the vertical rod of the second T-shaped frame located on the front side.

[0016] Furthermore, the drive mechanism includes a drive motor, a first sprocket, and a second sprocket;

[0017] A drive motor is movably mounted on the bottom wall of the frame, and the drive motor is driven to slide through a sliding mechanism;

[0018] A first sprocket is fixedly sleeved on the output shaft of the drive motor;

[0019] The second sprocket is fixedly sleeved at the middle end of the main shaft, and the first sprocket and the second sprocket are meshed with the same chain.

[0020] The main shaft has a keyway on its side wall, and the two circular saws each have a key that cooperates with the keyway. Both keys are slidably disposed in the keyway.

[0021] The two circular saws are respectively movably mounted on both sides of the second sprocket.

[0022] Furthermore, the sliding mechanism includes a U-shaped motor frame and a first knob;

[0023] The frame has a horizontal plate of a U-shaped motor frame that slides on the upper end of its bottom wall. The bottom wall of the drive motor housing is detachably mounted between the two vertical plates of the U-shaped motor frame by means of a fastener.

[0024] The U-shaped motor frame has a first threaded rod threaded through its internal thread on the horizontal plate. The first end of the first threaded rod is rotatably mounted on the right side wall of the frame, and the second end of the first threaded rod is rotatably mounted through the left side wall of the frame and fixed with a first knob.

[0025] Furthermore, the width adjustment mechanism includes a T-shaped movable rod, a T-shaped slider, a sliding sleeve, a first connecting rod, a second connecting rod, a cylindrical sleeve, a second knob, a connecting plate, and a first rectangular slider;

[0026] The first T-shaped frame has a first rectangular through groove on its vertical rod, and a vertical plate of a T-shaped slider is slidably disposed in the first rectangular through groove. The horizontal plate of the T-shaped slider is slidably disposed on the upper end of the vertical rod of the first T-shaped frame.

[0027] The lower end of the vertical rod of the T-shaped slider is fixed with a vertical rod of the T-shaped movable rod, and the two ends of the horizontal rod of the T-shaped movable rod are respectively movably arranged above the horizontal rod of the second T-shaped frame that is close to it;

[0028] Sliding sleeves are slidably fitted on the crossbars of the two second T-shaped frames, and the two sliding sleeves are slidably mounted on the left side of the vertical bar of the second T-shaped frame that is close to them;

[0029] The two ends of the crossbar of the T-shaped movable rod are respectively fixedly connected to the top wall of the sliding sleeve that is close to it;

[0030] The vertical rod of the T-shaped movable rod is threaded through by a second threaded rod. The first end of the second threaded rod is rotatably mounted on the inner wall of the first mounting plate, and the second end of the second threaded rod is rotatably mounted through the second mounting plate and fixed with a second knob.

[0031] The bottom walls of the two sliding sleeves are respectively fixed with a first connecting shaft, and the outer walls of the two first connecting shafts are respectively rotatably fitted with the first end of the first connecting rod;

[0032] Cylindrical sleeves are movably fitted on the outer wall of the main shaft, and the main shaft is rotatably connected to the cylindrical sleeves respectively;

[0033] The two circular saws are respectively rotatably mounted on the inner wall of the cylindrical sleeve that is close to them;

[0034] The first end of the second connecting rod is fixedly provided on the outer wall of the two cylindrical sleeves respectively, and the main shaft is rotatably connected between the first end of the two second connecting rods respectively;

[0035] The lower middle ends of the two second connecting rods are respectively fixed with second connecting shafts, and the second ends of the two first connecting rods are respectively rotatably sleeved on the outer wall of the second connecting shafts that are close to them;

[0036] A connecting plate is fixedly provided on the upper part of the second end of each of the two second connecting rods, and a first rectangular slider is fixedly provided on the upper end of each of the two connecting plates;

[0037] The first T-shaped frame has two second rectangular through slots on its crossbar, and the two first rectangular sliders are slidably disposed in the second rectangular through slots close to them.

[0038] Furthermore, a cylindrical rod is fixedly provided on the inner wall of the first mounting plate, and the cylindrical rod is slidably connected to the vertical rod of the T-shaped movable rod;

[0039] The cylindrical rod is located below the second threaded rod;

[0040] The outer wall of the cylindrical rod is provided with several scale lines for easy observation of the width.

[0041] Furthermore, the rotating mechanism includes a third link, a fourth link, a second rectangular slider, and a third knob;

[0042] The first ends of the third connecting rods are fixedly provided on the middle parts of both sides of the arc-shaped dustproof plate, and the two third connecting rods are respectively set perpendicular to the tangent at the connection point of the arc-shaped dustproof plate;

[0043] The second ends of the two third links are respectively rotatably mounted on the outer wall of the right end of the crossbar of the second T-shaped frame that is close to them;

[0044] The first end of the fourth link is rotatably provided on the outer wall of the first end of the third link located near the front side of the second T-shaped frame;

[0045] The crossbar of the second T-shaped frame located on the front side is provided with a third rectangular through groove, and a second rectangular slider is slidably provided in the third rectangular through groove. A third connecting shaft is fixed on the outer wall of the second rectangular slider.

[0046] The second end of the fourth link is rotatably sleeved on the outer wall of the third connecting shaft;

[0047] The fourth connecting rod is internally threaded through a third threaded rod, and the first end of the third threaded rod is rotatably disposed on the right wall of the third rectangular through groove.

[0048] The second end of the third threaded rod is rotatably inserted through the left side wall of the third rectangular through slot and is fixedly equipped with a third knob.

[0049] Advantages of this utility model:

[0050] The width adjustment mechanism of this invention can adjust the distance between the two circular saws, thereby satisfying the cutting of grooves of different widths. The rotating mechanism of this invention can drive the arc-shaped dustproof plate to rotate. When the arc-shaped dustproof plate rotates above the two circular saws, it can ensure that the dust generated by the circular saws during the cutting of the wall is blocked by the arc-shaped dustproof plate. When the arc-shaped dustproof plate rotates to the front of the two circular saws, it can prevent the two circular saws from being exposed, protecting the safety of the user. The width adjustment mechanism of this invention can also be observed from the scale lines on the cylindrical rod, which has strong precision.

[0051] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages, which will be further described in detail below with reference to the figures. Attached Figure Description

[0052] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0053] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0054] Figure 2 This is a schematic diagram of the installation of the first T-shaped frame and the second T-shaped frame of this utility model;

[0055] Figure 3 This is a schematic diagram showing the installation position of the drive mechanism of this utility model;

[0056] Figure 4 This is a schematic diagram illustrating the working principle of the rotating mechanism of this utility model;

[0057] Figure 5 This is a schematic diagram illustrating the working principle of the width adjustment mechanism of this utility model;

[0058] Figure 6 This is a schematic diagram of the overall structure of the width adjustment mechanism of this utility model;

[0059] Figure 7 This is a side view of the overall structure of this utility model.

[0060] Figure label:

[0061] 1 is the first T-shaped frame, 2 is the lifting handle, 3 is the auxiliary handle, 4 is the second T-shaped frame, 5 is the arc-shaped dustproof plate, 6 is the circular saw, 7 is the second sprocket, 8 is the main shaft, 9 is the cylindrical sleeve, 10 is the fourth connecting rod, 11 is the third connecting rod, 12 is the first mounting plate, 13 is the second mounting plate, 14 is the frame, 15 is the T-shaped movable rod, 16 is the second knob, 17 is the sliding sleeve, 18 is the U-shaped motor frame, 19 is the drive motor, 20 is the first knob, 21 is the third knob, 22 is the second rectangular slider, 23 is the second connecting rod, 24 is the first connecting rod, and 25 is the connecting plate;

[0062] 101 is the second rectangular through slot, and 102 is the first rectangular through slot;

[0063] 401 is the third rectangular through slot;

[0064] 701 is the first sprocket;

[0065] 1201 is a cylindrical rod;

[0066] 1501 is a T-shaped slider;

[0067] 2501 is the first rectangular slider. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0069] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0070] refer to Figures 1 to 7 A wall grooving device for building surfaces includes a first T-shaped frame 1, a first mounting plate 12, a second mounting plate 13, a second T-shaped frame 4, a frame 14, a lifting handle 2, an auxiliary handle 3, a circular saw 6, an arc-shaped dustproof plate 5, a main shaft 8, a drive mechanism, a width adjustment mechanism, and a rotation mechanism.

[0071] Second T-shaped frames 4 are fixedly installed at the lower ends of the horizontal bars of the first T-shaped frame 1, and the vertical ends of the two second T-shaped frames 4 are fixedly installed at the lower ends of the horizontal bars of the first T-shaped frame 1, respectively. (Refer to...) Figure 2The first T-shaped frame 1 and the two second T-shaped frames 4 form the overall frame of the equipment;

[0072] The same main shaft 8 is rotatably installed between the right ends of the crossbars of the two second T-shaped frames 4, and two circular saws 6 are slidably sleeved on the main shaft 8 respectively;

[0073] The main spindle 8 is driven to rotate by a drive mechanism, and the main spindle 8 will drive the two circular saws 6 to start rotating under the drive mechanism.

[0074] The two circular saws 6 are driven by width adjustment mechanisms;

[0075] The same arc-shaped dustproof plate 5 is movably installed on the outer side of the two circular saws 6. The arc-shaped dustproof plate 5 is driven to flip by a rotating mechanism. The two circular saws 6 can slide along the main shaft 8 under the drive of the width adjustment mechanism, thereby controlling the distance between the two circular saws 6 and cutting grooves of different widths. The arc-shaped dustproof plate 5 can move above and in front of the two circular saws 6 under the drive of the rotating mechanism. When the arc-shaped dustproof plate 5 is above the two circular saws 6, it can effectively prevent the dust generated by the circular saws 6 from shooting towards the construction personnel and obstructing their vision. When it is in front of the two circular saws 6, it can prevent the saw teeth of the circular saws 6 from being exposed and avoid accidental contact with personnel.

[0076] The lower ends of the vertical rods of the first T-shaped frame 1 are respectively fixedly installed with a first mounting plate 12 and a second mounting plate 13;

[0077] The width adjustment mechanism is installed between the first mounting plate 12 and the second mounting plate 13;

[0078] A frame 14 is fixedly installed on the lower left end of the crossbar of the second T-shaped frame 4 located on the rear side. The drive mechanism is movably installed inside the frame 14. The frame 14 is used to install the U-shaped motor frame 18 described later.

[0079] A lifting handle 2 is fixedly installed on the upper left end of the vertical pole of the first T-shaped frame 1, and an auxiliary handle 3 is fixedly installed on the outer wall of the vertical pole of the second T-shaped frame 4 located on the front side. The user can raise the equipment to cut the wall by holding the lifting handle 2 with one hand and grasping the auxiliary handle 3 with the other hand.

[0080] The drive mechanism includes a drive motor 19, a first sprocket 701, and a second sprocket 7;

[0081] A drive motor 19 is movably mounted on the bottom wall of the frame 14, and the drive motor 19 is driven to slide through a sliding mechanism;

[0082] The first sprocket 701 is fixedly mounted on the output shaft of the drive motor 19;

[0083] The second sprocket 7 is installed on the middle end fixed sleeve of the main shaft 8, and the same chain is installed between the first sprocket 701 and the second sprocket 7 in a meshing sleeve.

[0084] The main spindle 8 has a keyway on its side wall, and the two circular saws 6 are each equipped with a key that mates with the keyway. Both keys are slidably installed in the keyway.

[0085] Two circular saws 6 are movably mounted on both sides of the second sprocket 7. By starting the drive motor, the output shaft of the drive motor can drive the first sprocket 701 to start rotating. During the rotation of the first sprocket 701, the rotational driving force is transmitted to the second sprocket 7 through the chain, causing the second sprocket 7 to start rotating. The rotation of the second sprocket 7 can drive the main shaft 8, which is coaxial with it, to start rotating. The rotation of the main shaft 8 can drive the two circular saws 6 to start rotating respectively. The key and keyway between the two circular saws 6 and the main shaft 8 can not only ensure that the main shaft 8 drives the circular saws 6 to rotate, but also ensure that the two circular saws 6 can slide along the main shaft 8 under the drive of the width adjustment mechanism described later. The user can replace the first sprocket 701 according to the needs to meet the transmission ratio between the two sprockets, thereby controlling the speed of the two circular saws. Since replacing the sprocket requires removing the chain, in order to avoid the chain being unable to be tensioned or loose, the drive motor 19 can achieve this function under the drive of the sliding mechanism described later.

[0086] The sliding mechanism includes a U-shaped motor frame 18 and a first knob 20;

[0087] A horizontal plate of a U-shaped motor frame 18 is slidably mounted on the upper bottom wall of the frame 14, and the bottom wall of the drive motor 19 housing is detachably mounted between the two vertical plates of the U-shaped motor frame 18 via fasteners.

[0088] A first threaded rod is threaded through the horizontal plate of the U-shaped motor frame 18. The first end of the first threaded rod is rotatably mounted on the right side wall of the frame 14, and the second end of the first threaded rod is rotatably mounted through the left side wall of the frame 14. A first knob 20 is fixedly mounted thereon. By rotating the first knob 20, the first threaded rod, which is coaxially mounted thereon, begins to rotate. The rotation of the first threaded rod causes the U-shaped motor frame 18, which is threaded through it, to begin to slide. The lower housing of the drive motor 19 is mounted on the inner walls of the two vertical plates of the U-shaped mounting frame 18 by screws, thus ensuring that the U-shaped mounting frame 18 can drive the drive motor 19 to move by sliding. The drive motor 19 can change the distance between the first sprocket 701 and the second sprocket 7 by sliding. When replacing the sprocket and then mounting the chain, the position of the drive motor 19 can be changed by operating the first knob 20 to tension or loosen the chain.

[0089] The width adjustment mechanism includes a T-shaped movable rod 15, a T-shaped slider 1501, a sliding sleeve 17, a first connecting rod 24, a second connecting rod 23, a cylindrical sleeve 9, a second knob 16, a connecting plate 25, and a first rectangular slider 2501.

[0090] The first T-shaped frame 1 has a first rectangular through groove 102 on its vertical rod. The vertical plate of the T-shaped slider 1501 is slidably installed in the first rectangular through groove 102. The horizontal plate of the T-shaped slider 1501 is slidably installed on the upper end of the vertical rod of the first T-shaped frame 1.

[0091] The vertical end of the vertical rod of the T-shaped slider 1501 is fixedly installed with the vertical rod of the T-shaped movable rod 15, and the two ends of the horizontal rod of the T-shaped movable rod 15 are respectively movably installed above the horizontal rod of the second T-shaped frame 4 that is close to it.

[0092] Sliding sleeves 17 are slidably installed on the crossbars of the two second T-shaped frames 4 respectively, and the two sliding sleeves 17 are slidably installed on the left side of the vertical bar of the second T-shaped frame 4 that is close to it;

[0093] The two ends of the crossbar of the T-shaped movable rod 15 are fixedly connected to the top wall of the sliding sleeve 17 that is close to it.

[0094] The vertical rod of the T-shaped movable rod 15 is threaded through and installed with a second threaded rod. The first end of the second threaded rod is rotatably installed on the inner wall of the first mounting plate 12, and the second end of the second threaded rod is rotatably installed through the second mounting plate 13 and fixedly installed with a second knob 16.

[0095] Two sliding sleeves 17 are respectively fixedly installed on the bottom wall of the first connecting shaft, and the first end of the first connecting rod 24 is respectively rotatably installed on the outer wall of the two first connecting shafts;

[0096] Cylindrical sleeves 9 are movably mounted on the outer wall of the main shaft 8, and the main shaft 8 is rotatably connected to the cylindrical sleeves 9.

[0097] Two circular saws 6 are respectively rotatably mounted on the inner wall of the cylindrical sleeve 9 that is close to them;

[0098] The first ends of the second connecting rods 23 are fixedly installed on the outer walls of the two cylindrical sleeves 9 respectively, and the main shaft 8 is rotatably connected between the first ends of the two second connecting rods 23 respectively.

[0099] The lower middle parts of the two second connecting rods 23 are respectively fixedly installed with second connecting shafts, and the second ends of the two first connecting rods 24 are respectively rotatably mounted on the outer wall of the second connecting shafts that are close to them;

[0100] Connecting plates 25 are fixedly installed on the upper part of the second ends of the two second connecting rods 23 respectively, and first rectangular sliders 2501 are fixedly installed on the upper ends of the two connecting plates 25 respectively;

[0101] The first T-shaped frame 1 has two second rectangular through slots 101 on its crossbar. Two first rectangular sliders 2501 are slidably installed in the adjacent second rectangular through slots 101. By rotating the second knob 16, the second threaded rod fixedly installed on the same axis can be rotated. The rotation of the second threaded rod can drive the T-shaped movable rod 15, which is threaded through it, to slide. The vertical plate of the T-shaped slider 1501 located at the upper end of the T-shaped movable rod 15 is engaged in the first rectangular through slot 102, so the movement trajectory of the T-shaped movable rod 15 is fixed. As the T-shaped movable rod 15 slides, it will drive the sliding sleeves 17 on both sides respectively. The sliding begins, and the two sliding sleeves 17 drive the first connecting rod 24 located close to them at their lower ends to deflect. During the deflection process, the two first connecting rods 24 drive the second connecting rod 23 located close to them to slide. The connecting plate 25, which is fixedly installed with the two second connecting rods 23, achieves a fixed trajectory sliding through the cooperation of the first rectangular slider 2501 and the second rectangular through groove 101 below. Therefore, the sliding trajectory of the two second connecting rods 23 is determined, and the cylindrical sleeve 9, which is fixedly installed with the two second connecting rods 23, can now slide along the main shaft 8. The circular saw 6, which is rotatably installed on the inner wall of the two fixed sleeves 9, can now be driven to slide.

[0102] A cylindrical rod 1201 is fixedly installed on the inner wall of the first mounting plate 12, and the cylindrical rod 1201 is slidably connected to the vertical rod of the T-shaped movable rod 15.

[0103] The cylindrical rod 1201 is installed below the second threaded rod;

[0104] Several scale lines are installed on the outer wall of the cylindrical rod 1201 to facilitate width observation. During the sliding process of the T-shaped movable rod 15, the cylindrical rod 1201 will slide through it. The distance between the two circular saws 6 can be observed through the scale lines on the exposed part of the cylindrical rod 1201. The distance between the two circular saws is converted into visual data and engraved on the cylindrical rod 1201, which is convenient for construction personnel to adjust in advance. It should be noted that since the first end of the cylindrical sleeve 9 and the second connecting rod 23 is rotatably connected to the main shaft 8, friction will be generated between the main shaft 8 and the first end of the cylindrical sleeve 9 and the second connecting rod 23 during rotation. Therefore, ball bearings need to be installed inside the cylindrical sleeve 9 and the second connecting rod 23. The rotor of the ball bearing is also installed on the main shaft 8 through the cooperation of key and keyway to ensure that it can slide. The stator is fixedly connected to the first end of the cylindrical sleeve 9 and the second connecting rod 23. This can avoid friction between the main shaft 8 and the first end of the cylindrical sleeve 9 and the second connecting rod 23 during rotation.

[0105] The rotating mechanism includes a third link 11, a fourth link 10, a second rectangular slider 22, and a third knob 21;

[0106] The first ends of the third connecting rods 11 are fixedly installed on the middle parts of both sides of the arc-shaped dustproof plate 5, and the two third connecting rods 11 are respectively set perpendicular to the tangent at the connection point of the arc-shaped dustproof plate 5;

[0107] The second ends of the two third links 11 are respectively rotatably installed on the outer wall of the right end of the crossbar of the second T-shaped frame 4 that is close to them;

[0108] The first end of the fourth link 10 is rotatably mounted on the outer wall of the first end of the third link 11, which is located near the front side of the second T-shaped frame 4.

[0109] The crossbar of the second T-shaped frame 4 located on the front side is provided with a third rectangular through groove 401. A second rectangular slider 22 is slidably installed in the third rectangular through groove 401. A third connecting shaft is fixedly installed on the outer wall of the second rectangular slider 22.

[0110] The second end rotating sleeve of the fourth connecting rod 10 is installed on the outer wall of the third connecting shaft;

[0111] The fourth connecting rod 10 is internally threaded and has a third threaded rod installed through it. The first end of the third threaded rod is rotatably installed on the right wall of the third rectangular through groove 401.

[0112] The second end of the third threaded rod is rotatably inserted through the left side wall of the third rectangular through slot 401 and fixedly mounted with a third knob 21. (See reference) Figure 4 By rotating the third knob 21, the third knob 21 begins to rotate, and the third threaded rod, which is coaxially fixed to the third knob, begins to rotate. The second rectangular slider 22, which is threaded through the third threaded rod, can then slide within the third rectangular through groove 401. The sliding of the third rectangular through groove 401 drives the fourth connecting rod 10 to begin to deflect up and down. The deflection of the fourth connecting rod 10 drives the adjacent third connecting rod 11 to begin to rotate up and down. Since the rotation center of the third connecting rod 11 is fixed, the third connecting rod 11 can only perform circular motion around its own rotation center. The arc-shaped dustproof plate 5, which is fixed between the first ends of the two third connecting rods 11, can then begin to rotate. The rotation center of the third link 11 begins to rotate. It is important to note that the radius of the arc of the arc-shaped dustproof plate 5 needs to be greater than the radius of the two circular saws 6, and the rotation center of the third link 11 and the rotation center of the circular saws 6 are on the same axis. This ensures that the arc-shaped dustproof plate 5 remains at the outer edge of the two circular saws 6 during rotation, preventing contact between the arc-shaped dustproof plate 5 and the two circular saws 6. When the arc-shaped dustproof plate 5 rotates above the two circular saws 6, the dust generated by the circular saws 6 contacting the wall will spray upwards along the outer edge of the circular saws 6. At this point, it will be blocked by the lower wall of the arc-shaped dustproof plate 5, preventing the dust from interfering with the construction workers' vision.

[0113] The implementation method of this utility model:

[0114] The user pre-adjusts the width adjustment mechanism according to the wall groove width in the construction plan. When the second knob 16 is turned, the T-shaped movable rod 15 starts to move. The T-shaped movable rod 15 will gradually expose the scale line on the cylindrical rod 1201 through the movement. The scale line on the cylindrical rod 1201 is the scale line converted from the distance between the two circular saws 6. The user can know the distance between the two circular saws 6 by observing the scale line on the cylindrical rod 1201. When the distance between the two circular saws is adjusted to the width of the preset groove, the user stops turning the second knob 16.

[0115] Before using the equipment, turn the third knob 21 to rotate the arc-shaped dustproof plate 5 upwards above the two circular saws 6, but ensure that the two circular saws 6 can contact the wall while avoiding contact between the arc-shaped dustproof plate 5 and the wall.

[0116] After adjusting the distance between the two circular saws 6, hold the lifting handle 2 with one hand and the auxiliary handle 3 with the other hand to support the equipment. At this time, align the two circular saws with the edge of the preset groove and start the drive motor 19. The start and stop button of the drive motor 19 can be hidden on the auxiliary handle 3 for easy start and stop by the user. At this time, the drive motor 19 drives the main shaft 8 to start rotating through the cooperation of the sprocket and chain. The rotation of the main shaft 8 will drive the two circular saws 6 to start rotating and cutting along the edge of the preset groove.

[0117] When it is necessary to change the rotation speed of the two circular saws 6 to improve work efficiency, it is only necessary to change the transmission ratio between the two sprockets. Specifically, replace the first sprocket 701 with one of larger diameter. When replacing the first sprocket 701, turn the first knob 20 to make the U-shaped motor frame 18 drive the drive motor 19 to slide to the left. (Refer to...) Figure 3 At this point, the gap between the first sprocket 701 and the second sprocket 7 becomes smaller, and the chain can be detached. After replacing the first sprocket 701, put the chain back on the two sprockets and turn the first knob 20 in the opposite direction to make the newly replaced first sprocket 701 slide to the right until the chain is tensioned.

[0118] The width adjustment mechanism of this invention can adjust the distance between the two circular saws, thereby satisfying the cutting of grooves of different widths. The rotating mechanism of this invention can drive the arc-shaped dustproof plate to rotate. When the arc-shaped dustproof plate rotates above the two circular saws, it can ensure that the dust generated by the circular saws during the cutting of the wall is blocked by the arc-shaped dustproof plate. When the arc-shaped dustproof plate rotates to the front of the two circular saws, it can prevent the two circular saws from being exposed, protecting the safety of the user. The width adjustment mechanism of this invention can also be observed from the scale lines on the cylindrical rod, which has strong precision.

[0119] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A building wall grooving apparatus characterized by: The utility model provides a circular sawing machine, including first T type frame (1), first mounting plate (12), second mounting plate (13), second T type frame (4), frame (14), pull handle (2), auxiliary handle (3), circular saw (6), arc dustproof board (5), main shaft (8), drive mechanism, width adjusting mechanism, rotating mechanism, The lower part of the horizontal rod of the first T type frame (1) is fixedly provided with the second T type frame (4), and the vertical rod end of the second T type frame (4) is fixedly provided on the lower part of the horizontal rod of the first T type frame (1), The right end of the horizontal rod of the second T type frame (4) is rotatably provided with the same main shaft (8), and the main shaft (8) is slidably provided with two circular saws (6), The main shaft (8) is driven to rotate by the drive mechanism, The two circular saws (6) are driven to move by the width adjusting mechanism, The outer side of the two circular saws (6) is movably provided with the same arc dustproof board (5), and the arc dustproof board (5) is driven to flip by the rotating mechanism, The lower part of the vertical rod of the first T type frame (1) is fixedly provided with the first mounting plate (12) and the second mounting plate (13), The width adjusting mechanism is arranged between the first mounting plate (12) and the second mounting plate (13), The left end of the horizontal rod of the second T type frame (4) is fixedly provided with the frame (14), and the drive mechanism is movably arranged in the frame (14), The left end of the vertical rod of the first T type frame (1) is fixedly provided with the pull handle (2), and the outer wall of the vertical rod of the second T type frame (4) on the front side is fixedly provided with the auxiliary handle (3).

2. The building wall surfacing apparatus as defined in claim 1 wherein: The drive mechanism comprises a drive motor (19), a first sprocket (701), and a second sprocket (7); The bottom wall of the frame (14) is movably provided with the drive motor (19), and the drive motor (19) is driven to slide by the sliding mechanism; The output shaft of the drive motor (19) is fixedly provided with the first sprocket (701); The middle end of the main shaft (8) is fixedly provided with the second sprocket (7), and the first sprocket (701) and the second sprocket (7) are engaged with the same chain; The side wall of the main shaft (8) is provided with a key groove, and the two circular saws (6) are respectively provided with keys matched with the key groove, and the two keys are slidably arranged in the key groove; The two circular saws (6) are movably arranged on both sides of the second sprocket (7).

3. The building wall channelling apparatus of claim 2 wherein: The sliding mechanism comprises a u-shaped motor bracket (18) and a first knob (20); The bottom wall of the frame (14) is slidably provided with the horizontal plate of the u-shaped motor bracket (18), and the bottom wall of the shell of the drive motor (19) is detachably arranged between the two vertical plates of the u-shaped motor bracket (18) by the fixing piece; The horizontal plate of the u-shaped motor bracket (18) is threadedly penetrated by a first threaded rod, the first end of the first threaded rod is rotatably arranged on the right side wall of the frame (14), and the second end of the first threaded rod is rotatably penetrated through the left side wall of the frame (14) and fixedly provided with the first knob (20).

4. The building wall channelling apparatus of claim 2 wherein: The width adjusting mechanism comprises a T-shaped movable rod (15), a T-shaped slider (1501), a sliding sleeve (17), a first connecting rod (24), a second connecting rod (23), a cylindrical sleeve (9), a second knob (16), a connecting plate (25), and a first rectangular slider (2501); A first rectangular through slot (102) is arranged on the vertical rod of the first T-shaped frame (1), and a vertical plate of a T-shaped slider (1501) is slidably arranged in the first rectangular through slot (102); a horizontal plate of the T-shaped slider (1501) is slidably arranged on the upper end of the vertical rod of the first T-shaped frame (1); A vertical rod of a T-shaped movable rod (15) is fixedly arranged on the lower end of the vertical rod of the T-shaped slider (1501); horizontal rods of the T-shaped movable rod (15) are movably arranged above the horizontal rods of the second T-shaped frames (4) which are close to the T-shaped movable rod (15); Sliding sleeves (17) are slidably arranged on the horizontal rods of the second T-shaped frames (4) which are close to the sliding sleeves (17); The horizontal rods of the T-shaped movable rod (15) are fixedly connected with the top walls of the sliding sleeves (17) which are close to the T-shaped movable rod (15); A second threaded rod is threadedly arranged in the vertical rod of the T-shaped movable rod (15); a first end of the second threaded rod is rotatably arranged on the inner wall of the first mounting plate (12); and a second knob (16) is fixedly arranged on the second end of the second threaded rod which penetrates through the second mounting plate (13); First connecting shafts are fixedly arranged on the bottom walls of the sliding sleeves (17); and first ends of first connecting rods (24) are rotatably arranged on the outer walls of the first connecting shafts; Cylindrical sleeves (9) are movably arranged on the outer walls of the main shafts (8); and the main shafts (8) are rotatably arranged in the cylindrical sleeves (9); Circular saws (6) are rotatably arranged on the inner walls of the cylindrical sleeves (9) which are close to the circular saws (6); First ends of second connecting rods (23) are fixedly arranged on the outer walls of the cylindrical sleeves (9); and the main shafts (8) are rotatably arranged in the first ends of the second connecting rods (23); Second connecting shafts are fixedly arranged on the lower parts of the middle ends of the second connecting rods (23); and second ends of the first connecting rods (24) are rotatably arranged on the outer walls of the second connecting shafts which are close to the first connecting rods (24); Connecting plates (25) are fixedly arranged on the upper parts of the second ends of the second connecting rods (23); and first rectangular sliders (2501) are fixedly arranged on the upper ends of the connecting plates (25); Second rectangular through slots (101) are arranged on the horizontal rods of the first T-shaped frame (1); and the first rectangular sliders (2501) are slidably arranged in the second rectangular through slots (101) which are close to the first rectangular sliders (2501).

5. The building wall channelling apparatus of claim 4 wherein: A cylindrical rod (1201) is fixedly arranged on the inner wall of the first mounting plate (12); and the cylindrical rod (1201) is slidably arranged in the vertical rod of the T-shaped movable rod (15); The cylindrical rod (1201) is arranged below the second threaded rod. The outer wall of the cylindrical rod (1201) is provided with a plurality of scale lines for conveniently observing the width.

6. The building wall channelling device defined in claim 1, wherein: The rotating mechanism comprises a third connecting rod (11), a fourth connecting rod (10), a second rectangular sliding block (22) and a third knob (21); The first ends of the third connecting rods (11) are fixedly arranged on the middle portions of the two sides of the arc-shaped dustproof plate (5); The second ends of the third connecting rods (11) are rotatably arranged on the outer walls of the right ends of the horizontal rods of the second T-shaped frames (4) close to the third connecting rods (11); The first ends of the fourth connecting rods (10) are rotatably arranged on the outer walls of the first ends of the third connecting rods (11) close to the front side of the second T-shaped frames (4); The horizontal rods of the second T-shaped frames (4) on the front side are provided with third rectangular through grooves (401) therein, the second rectangular sliding blocks (22) are slidably arranged in the third rectangular through grooves (401), and the outer walls of the second rectangular sliding blocks (22) are fixedly provided with third connecting shafts; The second ends of the fourth connecting rods (10) are rotatably arranged on the outer walls of the third connecting shafts; Third threaded rods are threadedly arranged in the fourth connecting rods (10), and the first ends of the third threaded rods are rotatably arranged on the right walls of the third rectangular through grooves (401); The second ends of the third threaded rods are rotatably arranged through the left walls of the third rectangular through grooves (401) and are fixedly provided with third knobs (21).

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