A device for grinding the flatness of the surface of a tower crane foundation

Abstract

The present invention discloses a grinding device for the surface flatness of a tower crane foundation, belonging to the technical field of construction engineering. It includes a machine base, a zero-block and a rack, and further includes: a dust-proof cover under the machine base, with a diamond wheel arranged inside; an L-shaped support plate fixedly installed on the machine base, and an adjusting block is slidably connected between the L-shaped support plate and the machine base through a sliding component; two symmetrically arranged first mounting seats, a first sleeve is rotatably installed in the first mounting seat, a gear meshed with the rack is installed at the lower end of the first sleeve, and the other end is connected to the sliding component through a belt. When the gear at the lower end of the first sleeve contacts and meshes with the rack, the gear rotates, causing the adjusting block on the screw rod to press down, pressing the dust-proof cover to rotate a certain angle to grind the periphery of the zero-block. Every time the device travels one week, the gear rotates once, driving the adjusting block to press down a certain distance to change the rotation angle of the dust-proof cover again, and gradually grinding the periphery of the zero-block without repeated calibration.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a tower crane foundation surface flatness grinding device. Background Art

[0002] Tower crane is an important tool for vertical transportation of materials in engineering construction. The foundation of the tower crane needs to be constructed before the installation of the tower crane. At present, the foundation of the tower crane is generally made by directly using the natural foundation or the reinforced foundation to arrange the reinforced concrete foundation. The foundation of the tower crane is an important part of the tower crane, which bears the functions of the working load, anti-overturning, and self-weight of the tower crane.

[0003] According to the requirements of tower crane foundation construction, after the concrete reaches the required strength, the load-bearing plate needs to be installed first, and then the No. 0 block is installed. Before installation, the levelness of the tower crane foundation should reach 1 / 1000, and there is a need for drainage during use. The slope of the water dispersion around the load-bearing block should be 1 / 100. The traditional construction method is to try to level the casting surface after pouring, and to use manual grinding after the concrete solidifies. This method has relatively poor accuracy and a long construction process, requiring long-term grinding and repeated measurement and calibration. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the traditional construction method in the prior art is to try to level the casting surface after casting, and to use manual grinding after the concrete solidifies; this method has relatively poor accuracy, a long construction process, and requires long-term grinding and repeated measurement and calibration work, and a tower crane foundation surface flatness grinding device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tower crane foundation surface flatness grinding device comprises a machine base, a No. 0 block fixedly mounted on concrete after reaching the required strength, a rack fixedly mounted on the concrete on one side of the No. 0 block, and further comprising: a dust cover rotatably mounted below the machine base, a diamond wheel rotatably mounted in the dust cover; a motor fixedly mounted on the machine base, the output end of the motor being transmission-connected to the diamond wheel via a universal shaft; an L-shaped support plate fixedly mounted on the machine base, an adjustment block being slidably connected to the L-shaped support plate and the machine base via a sliding assembly, the adjustment block being against the dust cover; two symmetrically arranged first mounting seats, rotatably mounted on the sides of the machine base, a first sleeve rotatably mounted in the first mounting seat, the lower end of the first sleeve passing through the first mounting seat and fixedly mounted with a gear meshing with the rack, the upper end of the first sleeve passing through the first mounting seat and being connected to the sliding assembly via a belt.

[0007] In order to make the dust cover slide down and rotate under the adjusting block, preferably, the sliding assembly includes a screw rod rotatably installed between the L-shaped support plate and the machine base, the adjusting block is threadedly connected to the screw rod, and guide rods are slidably connected on both sides of the adjusting block, and the two ends of the guide rods are respectively fixedly connected to the L-shaped support plate and the machine base.

[0008] In order to restrain the dust cover and reduce the random shaking of the dust cover, preferably, connecting seats are symmetrically installed under the machine base, and support shafts are symmetrically fixedly connected between the connecting seats. A connecting tube fixedly connected to the dust cover is sleeved on the support shaft, and a torsion spring is sleeved on the support shaft, and two ends of the torsion spring are fixedly connected to the connecting tube and the connecting seat.

[0009] In order to support the device, preferably, it also includes: a sliding rod slidably installed in the first sleeve, the lower end of the sliding rod passes through the first sleeve and is fixedly installed with a horizontal plate, connecting pins are slidably installed in both ends of the horizontal plate, the lower end of the connecting pin passes through the horizontal plate and is installed with an auxiliary wheel; a spring is sleeved on the connecting pin, and the two ends of the spring are respectively fixedly connected to the connecting pin and the horizontal plate.

[0010] In order to adapt to the multi-angle support device, further, an arc plate is fixedly installed on the machine base, and a first arc groove and a first sliding pin slidably fitted in the first arc groove are arranged in the arc plate, and the first sliding pin is fixedly connected to the first mounting seat.

[0011] In order to collect dust and improve the working environment, preferably, it also includes: a dust box fixedly installed on the machine base, a negative pressure fan fixedly installed above the dust box, and a dust collection pipe connected between the dust box and the dust cover.

[0012] In order to improve the dust collection efficiency, further, a hollow tube connected with the dust collection pipe is fixedly installed along the inner wall shape of the dust shield, and a plurality of nozzles are welded on the hollow tube at equal intervals.

[0013] In order to grind the diamond wheel and improve the grinding efficiency, further, a connecting plate is symmetrically installed in the dust cover, a second arc groove and a second sliding pin sliding in the second arc groove are provided in the connecting plate, a pushing part is connected between the second sliding pin and the connecting plate, a second mounting seat is fixedly installed between the second sliding pins on both sides, and a grinding wheel is fixedly installed in the second mounting seat.

[0014] In order to reduce the obstruction to the diamond wheel during operation, the pushing part further includes a second sleeve rotatably mounted on the connecting plate, a connecting rod is slidably connected inside the second sleeve, and the connecting rod is rotatably connected to the second sliding pin; one end of the second sleeve away from the connecting rod is sealingly connected to the adjacent nozzle.

[0015] In order to reduce the blockage of the nozzle, further, it further includes: an airbag with a nozzle is fixedly installed on the dust shield, and the nozzle penetrates through the dust shield and extends into the hollow tube.

[0016] Compared with the prior art, the present invention provides a grinding device for the surface flatness of a tower crane foundation, which has the following beneficial effects:

[0017] 1. For this grinding device for the surface flatness of the tower crane foundation, when grinding the apron with a slope of 1 / 100 around the zero block, the construction workers push the device to move along the zero block. When the gear at the lower end of the first sleeve contacts and meshes with the rack, the gear rotates. The rotating gear transmits the rotating force to the lead screw through the belt. Under the constraint of the two side guide rods, the adjusting block on the lead screw presses down, pressing the dust shield to rotate by a certain angle to grind around the zero block. Whenever the device travels one week, the gear rotates once, driving the adjusting block to press down a certain distance and change the rotation angle of the dust shield again, gradually grinding around the zero block without repeated calibration.

[0018] 2. For this grinding device for the surface flatness of the tower crane foundation, when grinding the apron, the device will tilt. Due to the rotation of the first mounting seat, the sliding rod is always perpendicular to the concrete surface, and the auxiliary wheels on both sides are pressed against the concrete surface by the action of the spring, improving the supporting ability of the device.

[0019] 3. For this grinding device for the surface flatness of the tower crane foundation, when the dust shield rotates, the originally compressed airbag intakes air. When the dust shield resets under the action of the torsion spring, the impact generated during reset presses the airbag, causing the air in the airbag to be quickly blown into the hollow tube to backflush the nozzle, reducing the blockage of the nozzle. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a concrete block of a grinding device for the surface flatness of a tower crane foundation proposed by the present invention;

[0021] Figure 2 It is a schematic structural diagram of a grinding device for the surface flatness of a tower crane foundation proposed by the present invention;

[0022] Figure 3 It is a schematic structural diagram of a second perspective of a grinding device for the surface flatness of a tower crane foundation proposed by the present invention;

[0023] Figure 4 It is for a grinding device for the surface flatness of a tower crane foundation proposed by the present invention Figure 2 Schematic structural diagram at position A;

[0024] Figure 5 It is for a grinding device for the surface flatness of a tower crane foundation proposed by the present invention Figure 2 Schematic structural diagram at position B;

[0025] Figure 6 Schematic diagram of the grinding wheel structure of a grinding device for the surface flatness of a tower crane foundation proposed by the present invention;

[0026] Figure 7 Schematic diagram of the air nozzle structure of a grinding device for the surface flatness of a tower crane foundation proposed by the present invention.

[0027] In the figure: 1, machine base; 2, zero block; 3, rack; 4, dust shield; 5, diamond wheel; 6, motor; 7, L-shaped support plate; 8, adjusting block; 9, first mounting seat; 10, first sleeve; 11, gear; 12, lead screw; 13, guide rod; 14, connecting seat; 15, support shaft; 16, connecting tube; 17, torsion spring; 18, sliding rod; 19, horizontal plate; 20, connecting pin; 21, auxiliary wheel; 22, spring; 23, arc plate; 2301, first arc groove; 24, first sliding pin; 25, dust collection box; 26, negative pressure fan; 27, dust suction pipe; 28, connecting plate; 29, second arc groove; 30, second sliding pin; 31, second mounting seat; 32, grinding wheel; 33, second sleeve; 34, connecting rod; 35, airbag; 3501, air nozzle; 36, hollow tube; 37, nozzle. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] Embodiment 1:

[0031] Refer to Figure 1 - Figure 7 , a grinding device for the surface flatness of a tower crane foundation, including a machine base 1 and a zero block 2. The zero block 2 is fixedly installed on the concrete after reaching the strength, and a rack 3 is fixedly installed on the concrete on one side of the zero block 2.

[0032] Before installing the tower crane, the tower crane foundation needs to be constructed. At present, the tower crane foundation generally uses a reinforced concrete foundation directly on a natural foundation or a reinforced foundation. After the concrete reaches the strength, the concrete surface needs to be polished and leveled first, and the load-bearing plate is installed before the installation of the zero block 2. At this time, the horizontality of the zero block 2 after installation reaches 1 / 1000. Therefore, based on the zero block 2, a rack 3 is fixedly installed on the concrete on one side of the zero block 2 as the basis for the water dispersion polishing.

[0033] It also includes: a dust cover 4 rotatably mounted below the machine base 1, a diamond wheel 5 rotatably mounted inside the dust cover 4; a motor 6 is fixedly mounted on the machine base 1, and an output end of the motor 6 is transmission-connected to the diamond wheel 5 via a universal shaft.

[0034] During the operation of the motor 6, the output end of the motor 6 drives the diamond wheel 5 to rotate through the universal shaft. At least one diamond wheel 5 is provided to grind the bottom surface of the concrete.

[0035] It should be added that the universal joint includes a first connecting shaft fixedly connected to the output end of the motor 6 and a second connecting shaft fixedly connected to the diamond wheel 5. A ball cover is fixedly installed on the first connecting shaft, and a ball rotating in the ball cover is fixedly installed on the second connecting shaft. The motor 6 transmits the rotational force to the diamond wheel 5 through the first connecting shaft and the second connecting shaft, but the ball rotates as the angle between the dust cover 4 and the machine base 1 changes, which does not affect the transmission of the motor 6.

[0036] An L-shaped support plate 7 is fixedly mounted on the machine base 1, and an adjustment block 8 is slidably connected between the L-shaped support plate 7 and the machine base 1 through a sliding assembly, and the adjustment block 8 is against the dust cover 4; two symmetrically arranged first mounting seats 9 are rotatably mounted on the side of the machine base 1, and a first sleeve 10 is rotatably mounted in the first mounting seat 9, the lower end of the first sleeve 10 passes through the first mounting seat 9 and is fixedly mounted with a gear 11 meshing with the rack 3, and the upper end of the first sleeve 10 passes through the first mounting seat 9 and is connected to the sliding assembly through a belt.

[0037] See also Figure 2 and Figure 4 , the sliding component in this scheme is further optimized.

[0038] The sliding assembly includes a screw rod 12 rotatably installed between the L-shaped support plate 7 and the machine base 1, the adjustment block 8 is threadedly connected to the screw rod 12, and the two sides of the adjustment block 8 are slidably connected with guide rods 13, and the two ends of the guide rod 13 are fixedly connected to the L-shaped support plate 7 and the machine base 1 respectively.

[0039] When grinding the drainage slope with a slope of 1 / 100 around block 2, the construction workers push the device to move along block 2. When the gear 11 at the lower end of the first sleeve 10 contacts and meshes with the rack 3, the gear 11 rotates. The rotating gear 11 transmits the rotational force to the screw 12 through the belt. Under the constraint of the guide rods 13 on both sides, the adjustment block 8 on the screw 12 is pressed down, pressing the dust cover 4 to rotate a certain angle, and grinding is performed around block 2.

[0040] Every time the device travels one circle, the gear 11 rotates once, driving the adjusting block 8 to press down a certain distance to change the rotation angle of the dust cover 4 again, and gradually polishing the surroundings of the zero block 2.

[0041] It should be added that the belt connection is a kind of mechanical transmission. It is composed of one or more belts tightly sleeved on two pulleys. The two pulleys are respectively mounted on the first sleeve 10 and the screw rod 12. The friction between the belt and the two pulleys is used to transmit motion and power.

[0042] See also Figure 2 and Figure 3 A connecting seat 14 is symmetrically installed under the machine base 1, and a supporting shaft 15 is fixedly connected between the symmetrical connecting seats 14. The supporting shaft 15 is sleeved with a connecting tube 16 fixedly connected to the dust cover 4, and the supporting shaft 15 is sleeved with a torsion spring 17. The two ends of the torsion spring 17 are fixedly connected to the connecting tube 16 and the connecting seat 14.

[0043] The torsion spring 17 applies a pre-tightening force to the connecting tube 16 , which facilitates the subsequent resetting of the dust cover 4 without the pressure of the adjustment block 8 , and reduces the random shaking of the dust cover 4 .

[0044] Embodiment 2:

[0045] Reference Figure 1 - Figure 7 , which is basically the same as Example 1. On the basis of Example 1, the entire technical solution is further optimized, and an implementation plan for supporting the device is specifically disclosed.

[0046] See also Figure 2 and Figure 3 and Figure 5 The tower crane foundation surface flatness grinding device in this embodiment also includes: a sliding rod 18 slidably installed in the first sleeve 10. Specifically, a bolt that limits the sliding of the sliding rod 18 is threadedly connected to the first sleeve 10. The lower end of the sliding rod 18 passes through the first sleeve 10 and is fixedly installed with a horizontal plate 19. Connecting pins 20 are slidably installed in both ends of the horizontal plate 19. The lower end of the connecting pin 20 passes through the horizontal plate 19 and is installed with an auxiliary wheel 21; a spring 22 is sleeved on the connecting pin 20, and the two ends of the spring 22 are fixedly connected to the connecting pin 20 and the horizontal plate 19 respectively.

[0047] When installing the zero-block 2, first level and polish the concrete floor. A dial indicator is fixedly installed on the machine base 1, and the output end of the dial indicator penetrates through the machine base 1 and abuts against the connecting pin 20.

[0048] Before polishing, first position the heights of four points on the concrete base and find the lowest point, so that the device starts polishing from the lowest place. Rotate the bolt to make the sliding rod 18 slide down by gravity, and the auxiliary wheel 21 abuts against the concrete surface. Adjust the output end of the dial indicator until it abuts against the connecting pin 20 on one side. When the auxiliary wheel 21 passes through the protruding concrete surface, read the dial indicator to remind the operator that multiple polishes can be carried out here.

[0049] Refer to Figure 5 , an arc-shaped plate 23 is fixedly installed on the machine base 1. A first arc-shaped groove 2301 is arranged inside the arc-shaped plate 23, and a first sliding pin 24 that is slidably fitted inside the first arc-shaped groove 2301 is fixedly connected with the first mounting seat 9.

[0050] When polishing the apron, the device will tilt. Due to the rotation of the first mounting seat 9, the sliding rod 18 is always perpendicular to the concrete surface, and the auxiliary wheels 21 on both sides are pressed against the concrete surface by the springs 22 to improve the supporting ability of the device.

[0051] Embodiment 3:

[0052] Refer to Figure 1 - Figure 7 , which is basically the same as Embodiment 2. On the basis of Embodiment 2, the whole technical solution is further optimized, and a specific implementation plan for reducing dust is specifically disclosed.

[0053] Refer to Figure 2 and Figure 3 , the tower crane foundation surface flatness polishing device in this embodiment further includes: a dust collection box 25 fixedly installed on the machine base 1, a negative pressure fan 26 fixedly installed above the dust collection box 25, and a dust suction pipe 27 connected between the dust collection box 25 and the dust baffle 4.

[0054] During the operation of the negative pressure fan 26, suction is generated inside the dust collection box 25, and the dust generated during polishing is sucked into the dust collection box 25 through the dust suction pipe 27.

[0055] It should be added that a partition is fixedly installed inside the dust collection box 25. Ventilation holes and filter bags adapted to the ventilation holes are arranged on the partition. After the dust-containing air enters the dust collection box 25 and is filtered by the filter bags, the clean air is discharged by the negative pressure fan 26.

[0056] A box door that can cooperate with the switch is rotatably installed on the dust collection box 25, which is convenient for the operator to clean the internal dust regularly.

[0057] Refer to Figure 3, in order to improve the dust suction efficiency, a hollow tube 36 communicating with the dust suction tube 27 is fixedly installed along the inner wall shape of the inner edge of the dust shield 4, and a plurality of nozzles 37 are welded equidistantly on the hollow tube 36.

[0058] Refer to Figure 3 and Figure 6 , connection plates 28 are symmetrically installed inside the dust shield 4. A second arc-shaped groove 29 and a second sliding pin 30 slidably engaged with the second arc-shaped groove 29 are provided inside the connection plate 28. A pushing part is connected between the second sliding pin 30 and the connection plate 28. A second mounting seat 31 is fixedly installed between the second sliding pins 30 on both sides, and a grinding wheel 32 is fixedly installed inside the second mounting seat 31.

[0059] Furthermore, the pushing part includes a second sleeve 33 rotatably installed on the connection plate 28. A connecting rod 34 is slidably connected inside the second sleeve 33. A tension spring is fixedly connected between the connecting rod 34 and the second sleeve 33. The connecting rod 34 is rotatably connected with the second sliding pin 30; one end of the second sleeve 33 away from the connecting rod 34 is hermetically connected with the adjacent nozzle 37.

[0060] During the operation of the negative pressure fan 26, the suction force adsorbs the connecting rod 34 to slide inside the second sleeve 33. The sliding connecting rod 34 pulls the second sliding pin 30 inside the second arc-shaped groove 29, so that the grinding wheel 32 is received inside the dust shield 4. After the grinding is finished, the connecting rod 34 resets under the action of the tension spring. At this time, the grinding wheel 32 abuts against the bottom surface of the diamond wheel 5. On the one hand, the diamond wheel 5 is ground to improve the grinding efficiency between the diamond wheel 5 and the concrete; on the other hand, the diamond wheel 5 is decelerated to reduce the excessive consumption of grinding the concrete surface.

[0061] Embodiment 4:

[0062] Refer to Figure 1 - Figure 7 , which is basically the same as Embodiment 3. On the basis of Embodiment 3, the entire technical solution is further optimized, and an implementation solution for reducing the blockage of the nozzle 37 is specifically disclosed.

[0063] Refer to Figure 3 and Figure 7 , the tower crane foundation surface flatness grinding device in this embodiment further includes: an airbag 35 with an air nozzle 3501 is fixedly installed on the dust shield 4, and the air nozzle 3501 penetrates through the dust shield 4 and extends into the hollow tube 36.

[0064] When the dust shield 4 rotates, the originally compressed airbag 35 intakes air. When the dust shield 4 resets under the action of the torsion spring 17, the impact generated during the reset presses the airbag 35, so that the air in the airbag 35 is quickly blown into the hollow tube 36 to backflush the nozzle 37, reducing the blockage of the nozzle 37.

[0065] Here, once again, a general description of the working process of the full text is given:

[0066] When installing the No. 0 block 2, first level and polish the concrete floor. A dial indicator is fixedly installed on the machine base 1, and the output end of the dial indicator penetrates through the machine base 1 and abuts against the connecting pin 20. Before polishing, first position the heights of four points on the concrete base and find the lowest point, and start polishing from the lowest point. Rotate the bolt to make the sliding rod 18 slide down under gravity, and the auxiliary wheel 21 abuts against the concrete surface. Adjust the output end of the dial indicator until it abuts against the connecting pin 20 on one side. When the auxiliary wheel 21 passes over the protruding concrete surface, the reading of the dial indicator reminds the operator to polish here multiple times;

[0067] When polishing the apron with a slope of 1 / 100 around the No. 0 block 2, the construction workers push the device to move along the No. 0 block 2. When the gear 11 at the lower end of the first sleeve 10 contacts and meshes with the rack 3, the gear 11 rotates. The rotating gear 11 transmits the rotating force to the lead screw 12 through the belt. Under the restraint of the two guide rods 13 on both sides, the adjusting block 8 on the lead screw 12 presses down, pressing the dust-proof cover 4 to rotate by a certain angle to polish around the No. 0 block 2. Whenever the device travels one week, the gear 11 rotates once, driving the adjusting block 8 to press down a certain distance and changing the rotation angle of the dust-proof cover 4 again to polish the periphery of the No. 0 block 2 step by step;

[0068] During the polishing process, suction is generated in the dust collection box 25, and the dust generated during polishing is sucked into the dust collection box 25 through the suction pipe 27. When the dust-proof cover 4 is reset under the action of the torsion spring 17, the impact generated during reset presses the airbag 35, so that the air in the airbag 35 is quickly blown into the hollow pipe 36 to backflush the nozzle 37, reducing the blockage of the nozzle 37.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A grinding device for the surface flatness of a tower crane foundation, comprising a machine base (1), a zero-block (2) is fixedly installed on the concrete after reaching the strength, a rack (3) is fixedly installed on the concrete on one side of the zero-block (2), and it is characterized in that, Further included are: A dust shield (4) rotatably installed below the machine base (1), and a diamond wheel (5) is rotatably installed inside the dust shield (4); A motor (6) is fixedly installed on the machine base (1), and the output end of the motor (6) is in transmission connection with the diamond wheel (5) through a universal shaft; An L-shaped support plate (7) fixedly installed on the machine base (1), an adjustment block (8) is slidably connected between the L-shaped support plate (7) and the machine base (1) through a sliding assembly, and the adjustment block (8) abuts against the dust shield (4); Two symmetrically arranged first mounting seats (9) are rotatably installed on the side of the machine base (1), a first sleeve (10) is rotatably installed inside the first mounting seat (9), the lower end of the first sleeve (10) penetrates out of the first mounting seat (9) and is fixedly installed with a gear (11) meshed with the rack (3), and the upper end of the first sleeve (10) penetrates out of the first mounting seat (9) and is connected with the sliding assembly through a belt; The sliding assembly includes a lead screw (12) rotatably installed between the L-shaped support plate (7) and the machine base (1), the adjustment block (8) is threadedly connected to the lead screw (12), guide rods (13) are slidably connected to both sides of the adjustment block (8), and both ends of the guide rods (13) are fixedly connected to the L-shaped support plate (7) and the machine base (1) respectively; Connecting seats (14) are symmetrically installed below the machine base (1), a support shaft (15) is fixedly connected between the symmetric connecting seats (14), a connecting cylinder (16) fixedly connected with the dust shield (4) is sleeved on the support shaft (15), a torsion spring (17) is sleeved on the support shaft (15), and both ends of the torsion spring (17) are fixedly connected to the connecting cylinder (16) and the connecting seat (14) respectively.

2. The surface flatness grinding device for the tower crane foundation according to claim 1, characterized in that, Further included are: A slide bar (18) slidably installed inside the first sleeve (10), the lower end of the slide bar (18) penetrates out of the first sleeve (10) and is fixedly installed with a horizontal plate (19), connecting pins (20) are slidably installed inside both ends of the horizontal plate (19), and the lower ends of the connecting pins (20) penetrate out of the horizontal plate (19) and are installed with auxiliary wheels (21); A spring (22) is sleeved on the connecting pin (20), and both ends of the spring (22) are fixedly connected to the connecting pin (20) and the horizontal plate (19) respectively.

3. A surface flatness grinding device for a tower crane foundation according to claim 2, characterized in that, An arc-shaped plate (23) is fixedly installed on the machine base (1), a first arc-shaped groove (2301) is arranged inside the arc-shaped plate (23) and a first slide pin (24) slidably fitted inside the first arc-shaped groove (2301), and the first slide pin (24) is fixedly connected to the first mounting seat (9).

4. A surface flatness grinding device for a tower crane foundation according to claim 1, characterized in that Further included are: A dust collection box (25) fixedly installed on the machine base (1), a negative pressure fan (26) is fixedly installed above the dust collection box (25), and a dust suction pipe (27) is connected between the dust collection box (25) and the dust shield (4).

5. A surface flatness grinding device for a tower crane foundation according to claim 4, characterized in that, A hollow pipe (36) communicated with the dust suction pipe (27) is fixedly installed inside the dust shield (4) along the inner wall shape, and a plurality of nozzles (37) are welded on the hollow pipe (36) at equal intervals.

6. The surface flatness grinding device for the tower crane foundation according to claim 5, characterized in that, A dust shield (4) is symmetrically installed with connecting plates (28). A second arc-shaped groove (29) and a second sliding pin (30) slidably fitted in the second arc-shaped groove (29) are provided in the connecting plate (28). A pushing part is connected between the second sliding pin (30) and the connecting plate (28). A second mounting seat (31) is fixedly installed between the two second sliding pins (30). A grinding wheel (32) is fixedly installed in the second mounting seat (31).

7. A surface flatness grinding device for a tower crane foundation according to claim 6, characterized in that, The pushing part includes a second sleeve (33) rotatably installed on the connecting plate (28). A connecting rod (34) is slidably connected in the second sleeve (33). The connecting rod (34) is rotatably connected to the second sliding pin (30). One end of the second sleeve (33) away from the connecting rod (34) is sealingly connected to the adjacent nozzle (37).

8. A grinding device for the surface flatness of a tower crane foundation according to claim 6, characterized in that, It further includes: An airbag (35) with an air nozzle (3501) is fixedly installed on the dust shield (4). The air nozzle (3501) penetrates through the dust shield (4) and extends into the hollow tube (36).

Images