Mud scraper shutdown protection device and mud scraper

Abstract

The utility model relates to the technical field of mud scraping equipment, and provides a mud scraper shutdown protection device and a mud scraper, the mud scraper shutdown protection device is applied to the mud scraper and comprises a rotating assembly and an emergency stop trigger, and the rotating assembly is rotatably arranged on a moving device of the mud scraper. The rotating assembly is pressed on a load-bearing rope of the mud scraper so as to tension the load-bearing rope. The scram trigger is arranged on the rotating assembly and is configured to be connected with a moving device. The emergency stop trigger is used for detecting the rotating angle of the rotating assembly and triggering an emergency stop switch of the moving device according to the rotating angle of the rotating assembly. According to the scraper shutdown protection device, the scram trigger is arranged on the rotating assembly and can detect the rotating angle of the rotating assembly relative to the moving device, and when the scraper makes contact with the bottom of a pool due to the fact that the load bearing rope is excessively loosened, the scram switch of the moving device is triggered according to the rotating angle of the rotating assembly; and the moving device is suddenly stopped.

Description

Technical Field

[0001] This utility model relates to the field of sludge scraping equipment technology, and in particular to a sludge scraper stop protection device and a sludge scraper. Background Technology

[0002] In related technologies, sludge easily accumulates at the bottom of secondary sedimentation tanks in wastewater treatment plants, requiring the use of sludge scrapers to remove it. Typically, wastewater treatment plants use traveling sludge scrapers. The traveling trolley drives scrapers at the bottom to push the sludge to one side of the sedimentation tank, then returns the scrapers to the other side, repeating this process. While pushing sludge to one side, the scrapers need to remain on the ground; when returning to the other side, the traveling trolley needs to use a load-bearing rope (usually a steel wire rope) to pull the scrapers, keeping them completely suspended in the air. If the load-bearing rope slackens or breaks during the return trip, the scrapers may come into contact with the ground. In this situation, continued movement of the traveling trolley could lead to derailment, tilting, or even tipping over, causing serious malfunctions. Utility Model Content

[0003] This utility model provides a scraper stop protection device and a scraper to solve the problem in the prior art where, during the return stroke of the scraper, the load rope becomes loose or breaks, causing the scraper to contact the bottom of the pool. In this case, if the trolley continues to move, it may cause the entire scraper to derail or even tilt, overturn, or suffer other serious malfunctions.

[0004] In a first aspect, this utility model provides a scraper shutdown protection device, applied to a scraper, comprising:

[0005] A rotating assembly is rotatably mounted on the moving device of the sludge scraper; the rotating assembly is pressed onto the load-bearing rope of the sludge scraper to tension the load-bearing rope;

[0006] An emergency stop trigger is disposed on the rotating assembly and configured to be connected to the moving device; it is used to trigger the emergency stop switch of the moving device according to the relative angle between the rotating assembly and the moving device.

[0007] According to the scraper stop protection device of this utility model, the rotating assembly includes a rotating component and a contact component;

[0008] The end of the rotating component is configured to be rotatably connected to the moving device, the contact and the emergency stop trigger are respectively disposed on the rotating component, and the contact is pressed against the load rope.

[0009] According to the scraper stop protection device of this utility model, the contact element is a roller, and the roller is rotatably disposed on the rotating element.

[0010] According to the scraper stop protection device of this utility model, a limiting groove extending circumferentially along the outer circumference of the roller is provided on the outer circumferential surface of the roller.

[0011] According to the scraper stop protection device of this utility model, there are two rotating parts, which are arranged opposite to each other, and a first space is formed between the two rotating parts for the load-bearing rope to pass through; the contact member is disposed between the two rotating parts.

[0012] According to the scraper stop protection device of this utility model, the rotating component further includes a counterweight; the counterweight is installed on the rotating component.

[0013] According to the scraper stop protection device of this utility model, there are multiple counterweights, and the multiple counterweights have different masses; the rotating component and one of the multiple counterweights are detachably connected.

[0014] According to the scraper stop protection device of this utility model, the emergency stop trigger includes: an angle sensor and a trigger element;

[0015] The angle sensor is used to detect the rotation angle of the rotating component. The trigger is configured to be connected to the angle sensor and the emergency stop switch respectively. The trigger is used to trigger the emergency stop switch according to the angle information fed back by the angle sensor.

[0016] The scraper stop protection device according to this utility model also includes a pressure sensor;

[0017] The pressure sensor is configured to be located on the mobile device and is used for communication connection with an external terminal.

[0018] In the event of a broken load rope, the rotating assembly comes into contact with the detection end of the pressure sensor, which is used to transmit a corresponding pressure signal to the external terminal.

[0019] Secondly, this utility model also provides a sludge scraper, comprising:

[0020] A mobile device, wherein a mounting bracket is provided at the bottom of the mobile device;

[0021] A connecting rod is rotatably mounted on the moving device;

[0022] A scraper blade is mounted on the connecting rod;

[0023] The load-bearing rope is connected at one end to the moving device and at the other end to the connecting rod;

[0024] As described in any of the preceding claims, the rotating component is rotatably mounted on the mounting bracket.

[0025] This utility model discloses a scraper stop protection device. A rotatable rotating component is installed on the moving device of the scraper. This component is pressed onto a load-bearing rope to tension the rope and rotates with its swing. The rotating component is equipped with an emergency stop trigger. This trigger detects the rotation angle of the rotating component relative to the moving device. When the load-bearing rope becomes excessively slack, causing the scraper to contact the bottom of the tank, the emergency stop switch of the moving device is triggered based on the measured rotation angle, causing the moving device to stop abruptly. This effectively solves the problem in existing technologies where, during the scraper's return stroke, a slack or broken load-bearing rope can cause the scraper to contact the bottom of the tank, potentially leading to derailment, tilting, or even overturning of the entire scraper if the tractor continues to move under these circumstances. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram showing the cooperation between the scraper stop protection device and the moving device when the load-bearing rope is working normally, as provided in this embodiment of the utility model.

[0028] Figure 2 This is a schematic diagram showing the cooperation between the scraper stop protection device and the moving device when the load-bearing rope breaks, as provided in this embodiment of the utility model.

[0029] Figure label:

[0030] 1. Scraper blade shutdown protection device;

[0031] 11. Rotating assembly; 111. Rotating component; 112. Contact component;

[0032] 12. Emergency stop trigger; 13. Pressure sensor;

[0033] 2. Moving device; 21. Mounting bracket; 3. Load-bearing rope; 4. Scraper; 5. Connecting rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] The following is combined Figures 1-2 This invention describes a scraper stop protection device.

[0036] In some embodiments, such as Figure 1 and Figure 2 As shown, this utility model provides a scraper stop protection device 1, applied to a scraper, including: a rotating assembly 11 and an emergency stop trigger 12. The rotating assembly 11 is rotatably mounted on the moving device 2 of the scraper. The rotating assembly 11 presses against the load rope 3 of the scraper to tension the load rope 3. The emergency stop trigger 12 is mounted on the rotating assembly 11 and configured to connect with the moving device 2. The emergency stop trigger 12 is used to trigger the emergency stop switch of the moving device 2 according to the relative angle between the rotating assembly 11 and the moving device 2.

[0037] In this embodiment, the scraper blade stop protection device 1 is installed on the scraper to cause the moving device 2 to stop abruptly if the load rope 3 becomes excessively slack or breaks during the return stroke of the scraper blade 4, causing the scraper blade 4 to contact the bottom of the pool, thus protecting the entire scraper. Specifically, by rotatably mounting the rotating assembly 11 on the moving device 2 and pressing a portion of the rotating assembly 11 onto the load rope 3, the rotating assembly 11 can tension the load rope 3 under gravity and rotate relative to the moving device 2 when the state of the load rope 3 changes.

[0038] Understandably, the weight-bearing rope 3 is used to directly or indirectly pull the scraper blade 4 during its return stroke, keeping it suspended. Under normal operating conditions, the relative position and angle of the weight-bearing rope 3 and the moving device 2 vary within a certain range. Correspondingly, the rotation angle of the rotating component 11 relative to the moving device 2 also varies within a certain range. However, if the weight-bearing rope 3 becomes excessively slack or breaks, causing the scraper blade 4 to contact the bottom of the pool, the rotating component 11 is no longer supported by the weight-bearing rope 3 and moves downwards under gravity. The rotation angle of the rotating component 11 relative to the moving device 2 will then exceed the range of angle variation that occurs when the weight-bearing rope 3 is operating normally.

[0039] In this embodiment, the rotating component 11 is provided with an emergency stop trigger 12. The emergency stop trigger 12 is sensitive to the relative angle between the rotating component 11 and the moving device 2, and can trigger the emergency stop switch of the moving device 2 when the rotation angle exceeds the preset angle range (corresponding to the range of rotation angle change of the rotating component 11 relative to the moving device 2 when the load rope 3 is working normally), so as to stop the moving device 2 and avoid the sludge scraper from derailing or even tilting or overturning due to continued movement. Specifically, the emergency stop trigger 12 can be an angle detection device or a trigger switch device. For example, the emergency stop trigger 12 can detect the rotation angle of the rotating component 11 relative to the moving device 2 through a sensing device (encoder, Hall sensor, etc.). When the sensing device detects that the rotation angle exceeds the preset angle range, the emergency stop trigger 12 triggers the emergency stop switch of the moving device 2. Alternatively, the emergency stop trigger 12 can be equipped with a switching device (such as a photoelectric switch, proximity switch, etc.), and the rotating component 11 is also equipped with a trigger structure (such as a through hole, etc.) adapted to the switching device. When the rotation angle of the rotating component 11 relative to the moving device 2 does not exceed the preset angle range, the switching device is not triggered. When the rotation angle reaches the boundary of the angle range, the trigger structure triggers the corresponding switching device, thereby triggering the emergency stop trigger 12 to trigger the emergency stop switch of the moving device 2.

[0040] The scraper stop protection device 1 of this utility model has a rotatable rotating component 11 installed on the moving device 2 of the scraper. The rotating component 11 is pressed onto the load rope 3 to tension the load rope 3 and rotate with the swing of the load rope 3. The rotating component 11 is equipped with an emergency stop trigger 12, which can detect the rotation angle of the rotating component 11 relative to the moving device 2. When the load rope 3 is too slack and the scraper 4 contacts the bottom of the pool, the emergency stop switch of the moving device 2 is triggered according to the rotation angle of the rotating component 11, so that the moving device 2 stops abruptly. This effectively solves the problem in the prior art that when the load rope is slack or broken during the return stroke of the scraper, the scraper will contact the bottom of the pool. In this case, if the tractor continues to move, it may cause the entire scraper to derail or even tilt or overturn.

[0041] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the rotating assembly 11 includes a rotating member 111 and a contact member 112. The end of the rotating member 111 is configured to be rotatably connected to the moving device 2. The contact member 112 and the emergency stop trigger 12 are respectively disposed on the rotating member 111, and the contact member 112 is pressed against the load rope 3.

[0042] In this embodiment, the rotating component 111 can be a plate-shaped or rod-shaped structural component. One end of the rotating component 111 is rotatably connected to the moving device 2. The contact component 112 and the emergency stop trigger 12 are disposed on the rotating component 111. The contact component 112 is used to contact the load rope 3. The rotating component 111 can rotate relative to the moving device 2. The emergency stop trigger 12 is used to trigger the emergency stop switch of the moving device 2 when the rotation angle of the rotating component 111 exceeds the preset angle range.

[0043] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the contact element 112 is a roller, which is rotatably disposed on the rotating element 111.

[0044] In this embodiment, by setting the contact member 112 as a roller, the roller can roll along the load rope 3 when the rotating member 111 and the load rope 3 move relative to each other, so as to reduce the wear between the roller and the load rope 3.

[0045] In some embodiments, a limiting groove extending circumferentially along the outer circumferential surface of the roller is provided. In this embodiment, by providing a limiting groove on the outer circumferential surface of the roller, when the roller rolls along the load rope 3, a portion of the load rope 3 is located within the limiting groove, thereby preventing the load rope 3 and the roller from shifting left and right, and thus preventing the load rope 3 from detaching from one side of the roller.

[0046] In some embodiments, there are two rotating members 111, which are arranged opposite to each other, and a first space is formed between the two rotating members 111 for the load-bearing rope 3 to pass through. A contact member 112 is disposed between the two rotating members 111.

[0047] In this embodiment, by setting two opposing rotating members 111, part of the load-bearing rope 3 is located between the two rotating members 111, and the contact member 112 is also set between the two rotating members 111, so that the contact member 112 presses on the load-bearing rope 3. At the same time, the rotating members 111 located on both sides of the load-bearing rope 3 can limit the load-bearing rope 3, preventing the load-bearing rope 3 and the contact member 112 from shifting to the left or right and causing the load-bearing rope 3 and the contact member 112 to lose contact.

[0048] Optionally, in some embodiments, the rotating component 11 further includes a counterweight. The counterweight is mounted on the rotating component 111. In this embodiment, by mounting a counterweight on the rotating component 111, the rotating component 11 has sufficient weight to better press against the load rope 3 and tension the load rope 3. The counterweight enables the rotating component 11 to better press against the load rope 3 and overcomes the influence of the deformation of the load rope 3 on the relative angle between the rotating component 111 and the moving device 2. Furthermore, if the load rope 3 breaks and does not completely detach from the rotating component 111, it may also affect the relative angle between the rotating component 111 and the moving device 2. An appropriate counterweight can overcome this. Even if the load rope 3 does not detach from the rotating component 111 when it breaks, the counterweight can still cause the rotating component 111 to rotate to a naturally drooping state.

[0049] Optionally, in some embodiments, there are multiple counterweights with different masses; the rotating component 111 and one of the multiple counterweights are detachably connected. In this embodiment, by setting multiple counterweights of different masses, the user can select a suitable counterweight according to the material and weight of the load-bearing rope 3, and install the suitable counterweight on the rotating component 111, so that the scraper stop protection device 1 of this application can be replaced with a counterweight that is compatible with the load-bearing rope 3, thus improving its applicability.

[0050] Specifically, in some embodiments, the emergency stop trigger 12 includes an angle sensor and a trigger element. The angle sensor is used to detect the rotation angle of the rotating assembly 11, and the trigger element is configured to be electrically connected to the angle sensor and the emergency stop switch respectively. The trigger element is used to trigger the emergency stop switch based on the angle information fed back by the angle sensor.

[0051] In this embodiment, the angle sensor is used to detect the relative angle between the rotating component 11 and the moving device 2, and sends the angle information to the trigger. The trigger is used to trigger the emergency stop switch when the rotation angle exceeds the preset angle range (corresponding to the range of rotation angle change of the rotating component 11 relative to the moving device 2 when the load rope 3 is working normally), so as to make the moving device 2 stop in an emergency to protect the entire sludge scraper.

[0052] Specifically, in some embodiments, an angle sensor is used to detect the angle between the rotating component 11 and the vertical direction. When the load rope 3 is normally pulling the scraper 4 to keep the scraper 4 suspended, the angle between the rotating component 11 and the vertical direction is greater than or equal to a preset angle. When the angle detected by the angle sensor is less than the preset angle, it indicates that the load rope 3 is too slack or broken, causing the scraper 4 to contact the bottom of the pool. The trigger then activates the emergency stop switch of the moving device 2.

[0053] Alternatively, in some embodiments, such as Figure 1 and Figure 2As shown, the scraper stop protection device 1 also includes a pressure sensor 13. The pressure sensor 13 is configured to be located on the moving device 2 and is used for communication with an external terminal. In the event of a breakage of the load-bearing rope 3, the rotating assembly 11 contacts the detection end of the pressure sensor 13, and the pressure sensor 13 transmits the corresponding pressure signal to the external terminal.

[0054] In this embodiment, a pressure sensor 13 can be installed on the moving device 2 according to the rotation trajectory of the rotating component 11. When the load-bearing rope 3 is intact, the rotating component 11 does not contact the pressure sensor 13, and the detection end of the pressure sensor 13 does not bear any pressure. After the load-bearing rope 3 breaks, it can no longer support the rotating component 11, and the rotating component 11 quickly rotates downwards and contacts the detection end of the pressure sensor 13. The pressure sensor 13 can then send the sudden pressure signal to an external terminal. For example, the external terminal can be the control host computer of the entire sludge scraper. The operator of the sludge scraper can determine whether the load-bearing rope 3 broke when the moving device 2 stopped suddenly by using the data recorded by the pressure sensor 13 in the host computer, so that relevant personnel can perform subsequent maintenance on the sludge scraper.

[0055] In one specific embodiment, such as Figure 1 and Figure 2 As shown, a pressing element is provided on the rotating part 111 at the position corresponding to the detection end of the pressure sensor 13. When the rotating part 111 rotates to an angle perpendicular to the horizontal direction, the pressing element abuts against the detection end of the pressure sensor 13.

[0056] On the other hand, this utility model also provides a sludge scraper, including: a moving device 2, a connecting rod 5, a scraper blade 4, a load-bearing rope 3, and a scraper blade stop protection device 1 as provided in any of the above embodiments. By adopting the scraper blade stop protection device 1 in the above embodiments, the sludge scraper of this utility model also has the advantages of the above-mentioned scraper blade stop protection device 1, which will not be described in detail here. A mounting bracket 21 is provided at the bottom of the moving device 2. The connecting rod 5 is rotatably mounted on the moving device 2, the scraper blade 4 is mounted on the connecting rod 5, one end of the load-bearing rope 3 is connected to the moving device 2, and the other end is connected to the connecting rod 5. A rotating assembly 11 is rotatably mounted on the mounting bracket 21.

[0057] In this embodiment, the bottom of the moving device 2 is provided with a mounting bracket 21 for mounting the rotating assembly 11. The moving device 2 is connected to the scraper 4 via a connecting rod 5. The moving device 2 moves in the forward direction (i.e., Figure 1 When moving from center to left, scraper 4 contacts the bottom of the pool to push the sludge at the bottom of the pool to one side of the sedimentation tank; when moving device 2 moves in the return direction (i.e., Figure 1 When moving from the center to the right, the moving device 2 pulls the connecting rod 5 through the load-bearing rope 3, and drives the scraper 4 through the connecting rod 5, so that the scraper 4 is suspended relative to the bottom of the pool.

[0058] Specifically, a rolling roller can be installed at the bottom of the connecting rod 5 so that it can roll along the bottom of the pool.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A scraper stop protection device, applied to a scraper, characterized in that, include: A rotating component, rotatably mounted on the moving device of the scraper; The rotating component is pressed onto the load-bearing rope of the sludge scraper to tension the load-bearing rope; An emergency stop trigger is disposed on the rotating assembly and configured to be connected to the moving device; The emergency stop trigger is used to trigger the emergency stop switch of the mobile device based on the relative angle between the rotating component and the mobile device.

2. The scraper stop protection device according to claim 1, characterized in that, The rotating assembly includes a rotating component and a contact component; The end of the rotating component is configured to be rotatably connected to the moving device, the contact and the emergency stop trigger are respectively disposed on the rotating component, and the contact is pressed against the load rope.

3. The scraper stop protection device according to claim 2, characterized in that, The contact element is a roller, which is rotatably disposed on the rotating element.

4. The scraper stop protection device according to claim 3, characterized in that, A limiting groove extending circumferentially along the outer circumference of the roller is provided on its outer circumferential surface.

5. The scraper stop protection device according to claim 2, characterized in that, There are two rotating components, which are arranged opposite to each other, and a first space is formed between the two rotating components for the load-bearing rope to pass through; the contact component is disposed between the two rotating components.

6. The scraper stop protection device according to claim 2, characterized in that, The rotating assembly also includes a counterweight; the counterweight is mounted on the rotating component.

7. The scraper stop protection device according to claim 6, characterized in that, There are multiple counterweights, each with a different mass; the rotating component and one of the multiple counterweights are detachably connected.

8. The scraper stop protection device according to claim 1, characterized in that, The emergency stop trigger includes: an angle sensor and a trigger element; The angle sensor is used to detect the rotation angle of the rotating component. The trigger is configured to be connected to the angle sensor and the emergency stop switch respectively. The trigger is used to trigger the emergency stop switch according to the angle information fed back by the angle sensor.

9. The scraper stop protection device according to claim 1, characterized in that, It also includes pressure sensors; The pressure sensor is configured to be located on the mobile device and is used for communication connection with an external terminal. In the event of a broken load rope, the rotating assembly comes into contact with the detection end of the pressure sensor, which is used to transmit a corresponding pressure signal to the external terminal.

10. A sludge scraper, characterized in that, include: A mobile device, wherein a mounting bracket is provided at the bottom of the mobile device; A connecting rod is rotatably mounted on the moving device; A scraper blade is mounted on the connecting rod; The load-bearing rope is connected at one end to the moving device and at the other end to the connecting rod; The scraper stop protection device as described in any one of claims 1-9, wherein the rotating component is rotatably mounted on the mounting bracket.

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