Derusting abrasive belt assembly for derusting machine

Abstract

The utility model belongs to the field of bridge box derusting, and provides a derusting abrasive belt assembly for a derusting machine, the derusting abrasive belt assembly for the derusting machine comprises a pair of upper and lower derusting wheels and a middle beam, a matched abrasive belt is sleeved between the two derusting wheels, the middle beam is located in the abrasive belt, and the derusting wheels are connected with the middle beam. A left side plate and a right side plate are arranged at the two ends of the middle beam respectively, an adjusting rod is rotationally arranged in the lower rust removal wheel, and eccentric short rods are arranged at the eccentric positions of the two ends of the adjusting rod. When a driving shaft of the adjusting air cylinder is rotationally connected with the rotating block for rust removal, the lower rust removal wheel moves towards the bridge box till making contact with the abrasive belt, then the adjusting air cylinder drives the rotating block to rotate downwards, the rotating block drives the right eccentric short rod to rotate in a small range, and the left eccentric short rod also rotates synchronously; and the adjusting rod moves downwards and towards the bridge box by a small distance, so that the abrasive belt is always kept in a state of being tightly attached to the bridge box in the rust removal process.

Description

Technical Field

[0001] The utility model belongs to the field of bridge box rust removal, and particularly relates to a rust removal sand belt assembly for a rust remover. Background Art

[0002] With the rapid development of cities and the gradual improvement of the economic level, urban expressways and highways are constantly popularized and developed. During the construction of long-span bridges, precast bridge boxes are often used to be erected on bridge piers for construction.

[0003] Before the precast bridge box is erected on the bridge pier, it is usually necessary to spray a layer of anti-rust paint on the bridge box. To ensure the quality after painting, a rust removal device can be used to remove rust from the bridge box before painting. When using the existing rust removal device to remove rust from the bridge box, first, the rust removal sand belt assembly in the rust removal device is driven to contact the bridge box, and then the rust removal sand belt assembly is pushed to move, and the surface of the bridge box is polished by the rust removal sand belt assembly to complete the rust removal of the bridge box. Although the rust removal of the bridge box surface can also be completed in this way, the rust removal sand belt assembly cannot be ensured to be always in close contact with the bridge box during the rust removal process, so the quality of rust removal cannot be ensured. Summary of the Utility Model

[0004] In view of the above problems, the purpose of the utility model is to provide a rust removal sand belt assembly for a rust remover, aiming to solve the problem that the existing rust removal sand belt assembly for a rust remover cannot ensure the quality of rust removal.

[0005] The utility model adopts the following technical scheme:

[0006] The rust removal sand belt assembly for a rust remover includes a pair of upper and lower rust removal wheels and an intermediate beam. A matching sand belt is sleeved between the two rust removal wheels. The intermediate beam is located inside the sand belt. Left and right side plates are respectively arranged at both ends of the intermediate beam. An adjusting rod is rotatably arranged inside the lower rust removal wheel. Eccentric short rods are arranged at the eccentric positions at both ends of the adjusting rod. The left eccentric short rod is rotatably connected to the left side plate. The right eccentric short rod passes through the right side plate and is provided with a rotating block. An adjusting cylinder is arranged on the right side plate. The driving shaft of the adjusting cylinder is rotatably connected to the rotating block. A pulley is further arranged at the left end of the lower rust removal wheel.

[0007] Further, a lifting cylinder is arranged on the intermediate beam. A fixing frame is arranged on the driving shaft of the lifting cylinder. The upper rust removal wheel is rotatably installed on the fixing frame.

[0008] Further, inner notch openings are formed at both ends of the fixing frame. Fixing seats are arranged on the fixing frame outside the inner notch openings. A pair of fixing holes are formed in the fixing seats. Fixing rods are rotatably arranged at both ends of the upper rust removal wheel. After passing through the inner notch opening on the same side, the fixing rods are located inside the fixing seats. A pin is inserted into one fixing hole, passes through the fixing rod and exits from the other fixing hole.

[0009] Further, cross sections are formed on both sides of the fixing rod, and the cross section positions are located inside the fixing seat.

[0010] Further, a pair of vertical plates are arranged on the middle beam. Guide sleeves are arranged on the vertical plates. Guide rods are inserted into the guide sleeves. The top ends of the guide rods are fixed to the fixing frame.

[0011] Further, a circle of friction grooves is arranged on the lower rust removal wheel.

[0012] The beneficial effects of the present utility model are as follows: During rust removal, the lower rust removal wheel moves towards the bridge box until it contacts the sand belt. Immediately afterwards, the adjusting cylinder drives the rotating block to rotate downward. The rotating block drives the right eccentric short rod to rotate slightly. The left eccentric short rod also rotates synchronously and drives the adjusting rod to move downward and towards the bridge box for a short distance, ensuring that the sand belt always remains in close contact with the bridge box under the action of the lower rust removal wheel during the rust removal process. Description of the Drawings

[0013] Figure 1 is the front view of a rust removal sand belt assembly for a rust removal machine provided by the present utility model.

[0014] Figure 2 is the partial view of a rust removal sand belt assembly for a rust removal machine provided by the present utility model.

[0015] Figure 3 is the schematic structural view of the lower rust removal wheel provided by the present utility model.

[0016] Figure 4 is Figure 2 the enlarged view of part A in Detailed Embodiment

[0017] In order to make the patent purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] In order to illustrate the technical solution described in the present utility model, the following will be described through specific embodiments.

[0019] For the convenience of description, only parts related to the embodiments of the present utility model are shown.

[0020] Combined Figures 1-4 As shown, the rust removal sand belt assembly for the rust removal machine includes a pair of upper and lower rust removal wheels and an intermediate beam 10. As Figure 1 , the upper rust removal wheel is marked as 101, and the lower rust removal wheel is marked as 102. A matching sand belt 3 is sleeved between the two rust removal wheels. The intermediate beam 10 is located inside the sand belt 3. Two left and right side plates 2 are respectively provided at both ends of the intermediate beam 10. An adjusting rod 4 is rotatably provided inside the lower rust removal wheel 102. Eccentric short rods 5 are provided at the eccentric positions at both ends of the adjusting rod 4. The left eccentric short rod is rotatably connected to the left side plate, and the right eccentric short rod passes through the right side plate and is provided with a rotating block 6. An adjusting cylinder 7 is provided on the right side plate. The driving shaft of the adjusting cylinder 7 is rotatably connected to the rotating block 6. A pulley 9 is further provided at the left end of the lower rust removal wheel 102.

[0021] In this structure, as Figure 1 , a lifting cylinder 8 is provided on the intermediate beam 10. A fixing frame 12 is provided on the driving shaft of the lifting cylinder 8. The upper rust removal wheel 101 is rotatably installed on the fixing frame 12.

[0022] In this embodiment, the rust removal sand belt assembly is installed on the rust removal machine through the intermediate beam. A driving motor for driving the pulley to rotate is provided on the rust removal machine.

[0023] When using this rust removal sand belt assembly to remove rust from the bridge box, first, the staff pushes the rust removal machine and then drives this rust removal sand belt assembly to move towards the rust removal end face of the bridge box until the sand belt contacts it. Immediately afterwards, the adjusting cylinder drives the rotating block to rotate downward. The rotating block drives the right eccentric short rod to rotate slightly. During the rotation of the right eccentric short rod, the left eccentric short rod also rotates synchronously and drives the adjusting rod to move downward and towards the bridge box for a short distance. The sand belt is pressed tightly against the bridge box under the action of the lower rust removal wheel. Finally, the staff pushes the rust removal machine to move, and at the same time, the driving motor drives the lower rust removal wheel to rotate to complete the rust removal work on the bridge box.

[0024] When using this rust removal sand belt assembly to remove rust from the bridge box, the sand belt is always pressed tightly against the rust removal surface of the bridge box, which can make the rust removal effect on the bridge box better. And the above-mentioned rust removal machine is not the key content of this device, so it will not be elaborated here.

[0025] In this structure, a pair of vertical plates 13 are provided on the intermediate beam 10. Guide sleeves 14 are provided on the vertical plates 13. Guide rods 15 are inserted into the guide sleeves 14. The top ends of the guide rods 15 are fixed to the fixing frame 12.

[0026] In actual situations, by finely adjusting the distance of the upper rust-removing wheel, it is possible to ensure that the abrasive belt always remains taut, which can further improve the rust-removing effect on the bridge box. When adjustment is required, the lifting cylinder drives the fixing frame to move upward a small distance, and the upper rust-removing wheel synchronously moves upward a small distance. Under the pushing of the upper rust-removing wheel, the abrasive belt is in a taut state.

[0027] During the process when the lifting cylinder drives the fixing frame to move upward, the guide rod synchronously moves upward a small distance within the corresponding guide sleeve. The guide rod and the guide sleeve can play a guiding role, making the movement of the upper rust-removing wheel more stable.

[0028] Such as Figure 1 , a ring of friction grooves 16 is provided on the lower rust-removing wheel 102. This can prevent the abrasive belt from slipping during rotation, enabling the abrasive belt to rotate stably during rust removal, thereby improving the rust-removing effect. Moreover, the lower rust-removing wheel is a rubber wheel. When the lower rust-removing wheel moves downward slightly, the abrasive belt can better adhere to the bridge box.

[0029] As a preferred structure, such as Figure 2 , Figure 4 , inner notches 17 are opened at both ends of the fixing frame 12. Fixed seats 18 are provided on the fixing frame 12 outside the inner notches 17. A pair of fixing holes are opened on the fixed seats 18. Fixed rods 20 are rotatably provided at both ends of the upper rust-removing wheel. After the fixed rods 20 pass through the inner notches 17 on the same side and are located within the fixed seats 18, a pin 19 is inserted through one fixing hole, and the pin 19 passes through the fixed rod 20 and exits from the other fixing hole.

[0030] In this structure, the upper rust-removing wheel has a detachable structural design. When the upper rust-removing wheel needs to be disassembled, first, the lifting motor drives the upper rust-removing wheel to move downward a small distance. Then, the two pins are successively removed from the fixed seats on the left and right sides. Next, the upper rust-removing wheel is moved upward a small distance until the fixed rods are separated from the fixed seats. Finally, the upper rust-removing wheel can be taken out from the abrasive belt.

[0031] In addition, cross-sections 21 are opened on both sides of the fixed rod 20, and the cross-section positions 21 are located within the fixed seat 18. In this structure, outer notches 22 of the same size as the inner notches are opened on the fixed seat. When installing the upper rust-removing wheel, the fixed rods on both sides of the upper rust-removing wheel are inserted into the outer notches on the same side, which can prevent it from rotating and facilitate the insertion of the pins later.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rust-removing abrasive belt assembly for a rust-removing machine, characterized in that: The rust-removing sand belt assembly for the rust-removing machine includes a pair of upper and lower rust-removing wheels and an intermediate beam. A sand belt that matches is sleeved between the two rust-removing wheels. The intermediate beam is located inside the sand belt. Left and right side plates are respectively provided at both ends of the intermediate beam. An adjusting rod is rotatably provided inside the lower rust-removing wheel. Eccentric short rods are provided at the eccentric positions at both ends of the adjusting rod. The left eccentric short rod is rotatably connected to the left side plate. The right eccentric short rod passes through the right side plate and is provided with a rotating block. An adjusting cylinder is provided on the right side plate. The driving shaft of the adjusting cylinder is rotatably connected to the rotating block. A pulley is further provided at the left end of the lower rust-removing wheel.

2. The rust-removing abrasive belt assembly for a rust-removing machine according to claim 1, wherein: A lifting cylinder is provided on the intermediate beam. A fixing bracket is provided on the driving shaft of the lifting cylinder. The upper rust-removing wheel is rotatably installed on the fixing bracket.

3. The rust-removing abrasive belt assembly for a rust-removing machine according to claim 2, wherein: Inner notch openings are formed at both ends of the fixing bracket. Fixing seats are provided on the fixing bracket outside the inner notch openings. A pair of fixing holes are formed in the fixing seats. Fixing rods are rotatably provided at both ends of the upper rust-removing wheel. After the fixing rods pass through the inner notch openings on the same side, they are located inside the fixing seats. A pin is inserted into one fixing hole. The pin passes through the fixing rod and exits from the other fixing hole.

4. The rust-removing abrasive belt assembly for a rust-removing machine according to claim 3, characterized in that: Sections are formed on both sides of the fixing rod, and the section positions are located inside the fixing seats.

5. The rust-removing abrasive belt assembly for a rust-removing machine according to claim 4, characterized in that: A pair of vertical plates are provided on the intermediate beam. Guide sleeves are provided on the vertical plates. Guide rods are inserted into the guide sleeves. The top ends of the guide rods are fixed to the fixing bracket.

6. The rust-removing abrasive belt assembly for a rust-removing machine according to claim 5, characterized in that: A circle of friction grooves is provided on the lower rust-removing wheel.

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