Grille cleaner with hydraulic opening and closing rake mechanism

Abstract

The utility model provides a bar screen machine with a hydraulic opening and closing rake mechanism. The bar screen machine comprises a main body bracket, a scraper bucket, a scraper bucket lifting mechanism and the opening and closing rake mechanism, the scraper bucket lifting mechanism retracts and releases a first steel wire rope and a second steel wire rope through a winding drum to achieve lifting of the scraper bucket. The rake opening and closing mechanism comprises a hydraulic rod, an adjusting pulley, a guide pulley, a second steel wire rope and a hydraulic controller. And the hydraulic rod is vertically mounted on the main body bracket. The adjusting pulley is rotationally connected with the hydraulic rod. The guide pulley is installed at the front end of the body support and higher than the adjusting pulley. One end of the second steel wire rope is wound on a reel of the bar screen machine, and the other end is connected to the middle of the free end of the scraper bucket after sequentially bypassing the adjusting pulley and the guide pulley. A hydraulic driving structure is adopted to achieve the rake opening and closing function of the rake teeth, the requirement for long-term stable operation of the steel wire rope grille cleaner is met, and the service life and the working efficiency of equipment are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment mechanical equipment technical field, concretely is a kind of grating cleaner with hydraulic tensioning rake mechanism. BACKGROUND

[0002] Steel wire rope grating cleaner as a kind of efficient, reliable solid suspended matter intercepting and removing device, plays an important role in many water treatment fields. Its main working principle is to use steel wire rope to pull a group of rake teeth to move up and down in waterway or channel, and to capture and remove the sundries in water, such as branches, plastic products and other large volume floaters or suspended matters, to protect the subsequent water pump and pipeline system from being blocked. The traditional steel wire rope grating cleaner usually adopts differential mechanism, and realizes the opening and closing function of rake teeth by motor driving. Although the motor driving structure can basically meet the use demand, it has complex structure and a large number of moving parts, and is prone to failure in long-term operation, which reduces the service life and working efficiency of the equipment. SUMMARY

[0003] In view of the poor stability of the equipment caused by the motor driving rake teeth opening and closing at present, the utility model provides a grating cleaner with hydraulic tensioning rake mechanism, which discards the traditional motor driving structure, adopts a hydraulic driving structure to realize the tensioning rake function of rake teeth, meets the long-term stable operation demand of steel wire rope grating cleaner, and guarantees the service life and working efficiency of the equipment.

[0004] The utility model is realized the above technical purpose through the following technical scheme.

[0005] A grating cleaner with hydraulic tensioning rake mechanism, comprising a main body support, a rake bucket, a rake bucket lifting mechanism and a tensioning rake mechanism.

[0006] The rake bucket lifting mechanism comprises a motor, a winding drum, a pulley block and a first steel wire rope. The winding drum is installed on the top of the main body support and connected with the output shaft of the motor. One end of the first steel wire rope is wound on the winding drum, and the other end is connected with the fixed end of the rake bucket after passing through the pulley block installed on the main body support. The rake bucket is installed on the rake bucket track of the main body support.

[0007] The tensioning rake mechanism comprises a hydraulic rod, an adjusting pulley, a guide pulley, a second steel wire rope and a hydraulic controller. The hydraulic rod is installed vertically on the main body support. The adjusting pulley is installed on the top of the hydraulic rod, and moves up and down with the extension and contraction of the hydraulic rod. The guide pulley is installed on the front end of the main body support. One end of the second steel wire rope is wound on the winding drum of the grating cleaner, and the other end is connected to the middle part of the free end of the rake bucket after passing through the adjusting pulley and the guide pulley in sequence.

[0008] Further, the main support is vertically provided with limiting seats on both sides of the adjusting pulley, and a pulley track matched with the adjusting pulley is arranged on the surface of one limiting seat at the joint with the adjusting pulley, and a limiting block matched with the adjusting pulley is arranged on the surface of the other limiting seat at the joint with the adjusting pulley.

[0009] Further, the pulley track is mounted on a backing plate, and the backing plate is connected with the limiting seat through a pin shaft.

[0010] Further, the top end of the limiting seat is provided with a first limiting sensing switch connected with the hydraulic controller.

[0011] Further, the second limiting sensing switch and the third limiting sensing switch connected with the hydraulic controller are further included, and the second limiting sensing switch and the third limiting sensing switch are respectively mounted at the highest position and the lowest position of the rake bucket on the main support.

[0012] Further, a connecting shaft is arranged between the hydraulic rod and the adjusting pulley, one end of the connecting shaft is fixedly connected with the hydraulic rod, and the other end is rotationally connected with the adjusting pulley through a bearing.

[0013] Further, the number of the first steel wire rope is 2, and the first steel wire rope is connected with both sides of the fixed end of the rake bucket.

[0014] Further, the first steel wire rope, the hydraulic rod and the guide pulley are in the same vertical plane, and the guide pulley is always located above the rake bucket.

[0015] Further, a slag discharging push plate is hingedly connected to the upper part of the rake bucket track.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. The utility model discloses a hydraulic drive is used instead of traditional motor drive to open and close the rake, and the hydraulic drive system is more stable and reliable than the motor drive system under long-time continuous work, solves the problem that the equipment stability is poor in the process that the rake tooth opens and closes, and prolongs the service life of the equipment.

[0018] 2. The utility model discloses that the first limiting sensing switch is used to capture the position information of the adjusting pulley, avoids that the adjusting pulley excessively rises under the drive of the hydraulic rod, thereby effectively prevents the excessive collision between the rake bucket and the main support, and reduces the risk of equipment damage.

[0019] 3. The adjusting pulley in the utility model is limited through the pulley track and the limiting block on both sides of the limiting seat, and the design can ensure that the adjusting pulley does not shift during the working process, and guarantees the accuracy and reliability of the rake bucket opening and closing action.

[0020] 3. The opening and closing rake mechanism has better durability and lower failure rate, which reduces the workload and cost of maintenance. At the same time, the opening and closing degree of the rake is more accurate, which helps to improve the opening and closing efficiency of the rake. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a structure diagram of the grid cleaner.

[0022] Figure 2 The utility model discloses a structure diagram of the hydraulic push rod and the adjusting pulley.

[0023] Figure 3 The utility model discloses the assembly drawing of the adjusting pulley.

[0024] The signs are as follows:

[0025] 1-main body support, 2-rake, 3-motor, 4-reel, 5-pulley set, 6-first steel wire rope, 7-rake track, 8-hydraulic rod, 9-adjusting pulley, 10-guide pulley, 11-second steel wire rope, 12-limiting seat, 13-pulley track, 14-limiting sliding block, 15-sleeper, 16-pivot, 17-first limiting inductive switch, 18-connecting shaft, 19-removal push plate. DETAILED DESCRIPTION

[0026] The utility model will be further explained in connection with the drawings and specific embodiment, but the protection scope of the utility model is not limited to this.

[0027] The grid cleaner with hydraulic opening and closing rake mechanism of the embodiment includes main body support 1, rake 2, rake lifting mechanism and opening and closing rake mechanism. Figure 1 The structure diagram of the grid cleaner of the embodiment.

[0028] The rake lifting mechanism includes motor 3, reel 4, pulley set 5 and first steel wire rope 6. The reel 4 is installed at the top of the main body support 1 and is connected with the output shaft of the motor 3. The number of the first steel wire rope 6 is 2, and the two sides of the fixed end of the rake 2 are connected respectively, one end of the first steel wire rope 6 is wound on the reel 4, and the other end is wound over the pulley set 5 installed on the main body support 1 and is connected with the two sides of the fixed end of the rake 2 respectively, for lifting and releasing the rake 2. The rake 2 is installed on the rake track 7 of the main body support 1, and the removal push plate 19 is rotatably connected on the upper part of the rake track 7.

[0029] The opening and closing rake mechanism includes hydraulic rod 8, adjusting pulley 9, guide pulley 10, second steel wire rope 11 and hydraulic controller. Figure 2This is a schematic diagram of the structure of the hydraulic push rod and the adjustment pulley of this embodiment. The hydraulic rod 8 is vertically mounted on the main frame 1 and is connected to the hydraulic controller. A connecting shaft 18 is provided between the hydraulic rod 8 and the adjustment pulley 9. One end of the connecting shaft 18 is fixedly connected to the hydraulic rod 8, and the other end is rotatably connected to the adjustment pulley 9 through a bearing. The adjustment pulley 9 moves up and down as the hydraulic rod 8 extends and contracts. Figure 3 This is an assembly diagram of the adjustment pulley described in this embodiment. The main frame 1 is vertically mounted with stoppers 12 on either side of the adjustment pulley 9. On one side, the stopper 12 is located at the interface with the adjustment pulley 9, with a pulley track 13 compatible with the adjustment pulley 9. The pulley track 13 is mounted on a backing plate 15, which is connected to the stopper 12 via a pin 16. On the other side, the stopper 12 is located at the interface with the adjustment pulley 9, with a stopper slider 14 compatible with the adjustment pulley 9 to prevent the adjustment pulley 9 from moving. The guide pulley 10 is mounted at the front end of the main frame 1. As the adjustment pulley 9 moves up and down, it pulls the free end of the bucket 2. Assuming the fixed end of the bucket 2 remains stationary, the bucket 2 can tilt with the fixed end as a fulcrum, thereby enabling the bucket 2 to begin raking. One end of the second steel wire rope 11 is wound around the reel 4 of the screen cleaner. The other end of the second steel wire rope passes through the adjustment pulley 9 and guide pulley 10, then connects to the middle of the free end of the bucket 2. The first steel wire rope 6 , the hydraulic rod 8 and the guide pulley 10 are in the same vertical plane, and the guide pulley 10 is always located above the bucket 2 .

[0030] Furthermore, the system includes a first limit sensor switch 17 connected to the hydraulic controller, as well as second and third limit sensors (not shown) connected to the hydraulic controller (and the controller of the motor 3). The first limit sensor switch 17 is mounted on the top of the limit seat 12. The second and third limit sensors are mounted on the main frame 1 at the highest and lowest positions that the bucket 2 can reach, respectively.

[0031] The working principle of the steel wire rope traction type grid cleaner is as follows: after the grid cleaner starts to work, the motor 3 drives the winding drum 4 to rotate, the rake 2 carrying the slag is lifted along the rake track 7 under the synchronous traction of the first steel wire rope 6 and the second steel wire rope 11, after being lifted to a certain height, the rake 2 is in contact with the slag discharging push plate 19, the slag in the rake 2 falls into the collecting hopper below under the pushing of the slag discharging push plate 19, and the rake 2 keeps the lifting trend in the process. After the slag is completely removed, the rake 2 is located at the highest position that can be reached on the rake track 7, the second limit sensing switch detects the position information of the rake 2, the motor 3 is turned off, the first steel wire rope 6 and the second steel wire rope 11 stop the traction work on the rake 2, and the hydraulic push rod is retracted, so that the adjusting pulley 9 is pulled back from the highest point to the lowest point, in the process, the rake 2 is turned over with the fixed end as the fulcrum, so that the rake is opened. Then the motor 3 is restarted, the rake 2 in the open state is returned to the lowest position that can be reached on the rake track 7 under the synchronous traction of the first steel wire rope 6 and the second steel wire rope 11, the third limit sensing switch detects the position information of the rake 2, the motor 3 is turned off, the first steel wire rope 6 and the second steel wire rope 11 stop the traction work on the rake 2, and the hydraulic push rod is pushed through the hydraulic controller, so that the adjusting pulley 9 is lifted from the lowest point to the highest point, the first limit sensing switch 17 detects the position information of the adjusting pulley 9, and the hydraulic push rod is turned off through the hydraulic controller when the adjusting pulley 9 runs to the highest point. In the process, the rake 2 is turned over with the fixed end as the fulcrum, so that the rake is closed. Then the motor 3 is restarted, and the rake 2 is lifted along the rake track 7 under the synchronous traction of the first steel wire rope 6 and the second steel wire rope 11.

[0032] The embodiment is a preferred embodiment of the utility model, but the utility model is not limited to the above-mentioned embodiment, any obvious improvement, replacement or modification made by the person skilled in the art without departing from the essential content of the utility model belongs to the protection scope of the utility model.

Claims

1. A grille cleaning machine with a hydraulic opening and closing rake mechanism, characterized in that: It comprises a main body support (1), a rake bucket (2), a rake bucket lifting mechanism and a rake opening and closing mechanism; The bucket lifting mechanism comprises a motor (3), a drum (4), a pulley block (5) and a first steel wire rope (6); the drum (4) is mounted on the top of the main frame (1) and is connected to the output shaft of the motor (3); one end of the first steel wire rope (6) is wound around the drum (4), and the other end is passed around the pulley block (5) mounted on the main frame (1) and is connected to the fixed end of the bucket (2); the bucket (2) is mounted on the bucket track (7) of the main frame (1); The opening and closing rake mechanism comprises a hydraulic rod (8), an adjusting pulley (9), a guide pulley (10), a second steel wire rope (11) and a hydraulic controller; the hydraulic rod (8) is vertically mounted on the main frame (1); the adjusting pulley (9) is mounted on the top of the hydraulic rod (8), and the adjusting pulley (9) moves up and down as the hydraulic rod (8) is extended or retracted; the guide pulley (10) is mounted on the front end of the main frame (1); one end of the second steel wire rope (11) is wound around the drum (4) of the grille dirt remover, and the other end is connected to the middle of the free end of the rake bucket (2) after passing through the adjusting pulley (9) and the guide pulley (10) in sequence.

2. The grille cleaning machine according to claim 1, characterized in that: The main frame (1) is vertically mounted with a limit seat (12) located on both sides of the adjusting pulley (9), wherein a pulley track (13) adapted to the adjusting pulley (9) is provided on the surface where the limit seat (12) on one side connects with the adjusting pulley (9), and a limit slider (14) adapted to the adjusting pulley (9) is provided on the surface where the limit seat (12) on the other side connects with the adjusting pulley (9).

3. The wire rope traction type grille cleaner according to claim 2, characterized in that: The pulley track (13) is installed on a pad (15), and the pad (15) is connected to the limiting seat (12) via a pin (16).

4. The wire rope traction type grille dirt remover according to claim 2, characterized in that: A first limit sensing switch (17) connected to a hydraulic controller is provided at the top of the limit seat (12).

5. The wire rope traction type grille dirt remover according to claim 1, characterized in that: It also includes a second limit sensing switch and a third limit sensing switch connected to the hydraulic controller, wherein the second limit sensing switch and the third limit sensing switch are respectively installed on the main frame (1) at the highest position and the lowest position that the bucket (2) can reach.

6. The wire rope traction type grille dirt remover according to claim 1, characterized in that: A connecting shaft (18) is provided between the hydraulic rod (8) and the adjusting pulley (9), one end of the connecting shaft (18) is fixedly connected to the hydraulic rod (8), and the other end is rotatably connected to the adjusting pulley (9) via a bearing.

7. The hydraulic drive mechanism for opening and closing rakes according to claim 1, characterized in that: The number of the first steel wire ropes (6) is two and they are respectively connected to both sides of the fixed end of the bucket (2).

8. The wire rope traction type grille dirt remover according to claim 1, characterized in that: The first steel wire rope (6), the hydraulic rod (8) and the guide pulley (10) are in the same vertical plane, and the guide pulley (10) is always located above the bucket (2).

9. The wire rope traction type grille dirt remover according to claim 1, characterized in that: The upper part of the rake bucket track (7) is hinged with a slag unloading push plate (19).

Images