An automatic hanging robot used in the coal feeder calibration process

Abstract

The utility model discloses an automatic weight hanging robot for the calibration process of a coal feeder, comprising a box body installed in the coal feeder, wherein a piston cylinder is fixedly installed on the inner top side of the box body. When the automatic weight hanging robot is in operation, when the test weight is retracted into the box body for storage, the test weight is synchronously driven to rotate, and the coal powder on the test weight is blown off by the high-speed airflow blowing on the test weight, thereby completing the cleaning of the coal powder attached to the test weight, the cleaning effect of the test weight is good, and the test weight will not have residual coal powder, and during the storage process of the test weight in the box body, the box body is always formed with a high-pressure cavity due to the continuous inflow of gas, thereby preventing the external coal powder from floating into the box body through the airflow at the opening of the box body, and the above-mentioned coal powder is directly carried by the airflow into the box body after being blown off by the test weight, thereby preventing the external coal powder from floating into the box body and adhering to the test weight to affect the use of the test weight.

Description

Technical Field

[0001] The utility model relates to the technical field of code-hanging robots, in particular to an automatic code-hanging robot used in a coal feeder calibration process. Background Art

[0002] Coal feeder is a kind of mechanical equipment widely used in the coal industry. Its main function is to continuously and evenly transport coal from coal storage bins or other coal sources to equipment or systems that need coal. Coal feeder plays a vital role in the process of coal mining, transportation, combustion, etc.

[0003] For example, an automatic hanging weight robot for the coal feeder calibration process with publication number CN220871889U comprises: a main body and an opening and closing mechanism, the main body comprises a box body, an electric cylinder, a hanging ring and a calibration weight, the box body opening is arranged downward, the electric cylinder is fixedly connected to the inner wall at the top of the box body, two groups of hanging rings are arranged, the two groups of hanging rings are respectively fixedly connected to the bottom end of the piston rod of the electric cylinder and the top of the calibration weight, the two groups of hanging rings are hooked to each other, a movable hole is opened in the vertical direction on one side of the box body, the opening and closing mechanism comprises an installation slat, a U-shaped rail, a shield, a driving slat and a connecting slat, and its beneficial effects are as follows: by arranging the opening and closing mechanism in conjunction with the box body, the calibration weight can be put into the box body and the box body can be covered by the shield, thereby avoiding the adhesion of a large amount of coal ash on the surface of the calibration weight, which is conducive to ensuring the calibration accuracy, and by arranging the bristles on the inner wall of the box body, the surface of the calibration weight can be cleaned by the bristles before and after use, thereby further ensuring the calibration accuracy.

[0004] In the above patent, the contact between the calibration weight and the coal is isolated by opening and closing the box, but during the opening and closing process of the box, a certain amount of coal ash may enter the box, which will cause the calibration weight to still be sticky with a small amount of coal ash during storage in the box, and the brush in the above patent may cause the coal ash to enter the gaps between the bristles of the brush when cleaning the coal ash on the valve, so that when the brush is cleaning the weight, a certain amount of coal ash may adhere to the weight, ultimately causing the weight of the weight to deviate and affecting the use of the weight. Utility Model Content

[0005] The utility model aims to provide an automatic code hanging robot used in the coal feeder calibration process, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic code hanging robot for the calibration process of a coal feeder, comprising a box body installed in the coal feeder, a piston cylinder is fixedly installed on the inner top side of the box body, a first piston plate is slidably installed in the piston cylinder, a round tube is rotatably installed in the first piston plate through a bearing, and the outer peripheral wall of the round tube is in contact with the inner wall of the bottom opening of the piston cylinder, a cleaning mechanism is provided on the piston cylinder, a calibration weight is provided on the bottom side of the piston cylinder, and the calibration weight is connected to the round tube by a connecting mechanism.

[0007] Preferably, the cleaning mechanism includes a pressure-limiting valve, a storage groove with a cross-shaped cross-section is opened at the top of the circular tube, the bottom end of the pressure-limiting valve is inserted into the top opening of the storage groove and is fixedly connected to the inner wall of the top opening of the storage groove, a plurality of air inlet holes are opened in a circular row on the outer peripheral wall of the top of the circular tube, and the interior of each air inlet hole is communicated with the interior of the storage groove, the air inlet holes are located below the first piston plate, an electric-controlled valve is provided on the outer peripheral side of the bottom of the piston cylinder, and the exhaust end of the electric-controlled valve is fixedly passed through the wall of the piston cylinder, the air inlet end of the electric-controlled valve is connected to an air inlet pipe, and the air inlet pipe is fixedly passed through the wall of the box body.

[0008] Preferably, a limiting ring is provided between the first piston plate and the electric control valve, and the outer peripheral wall of the limiting ring is fixedly connected to the inner wall of the piston cylinder, and the distance between the limiting ring and the inner bottom wall of the piston cylinder is greater than the distance between the air inlet and the first piston plate.

[0009] Preferably, a conduit is connected and installed on the outer peripheral wall of the top of the piston cylinder, and the top end of the conduit is located above the first piston plate, a guide shell is provided on the outer peripheral side of the calibration weight, and the bottom end of the conduit is fixedly passed through the shell wall of the guide shell, and the exhaust port of the guide shell is arranged in a flared shape.

[0010] Preferably, an impeller is provided above the circular tube at a position corresponding to the pressure-limiting valve, and the impeller is fixedly connected to the circular tube via a connecting rod.

[0011] Preferably, the connecting mechanism includes a second piston plate, which is slidably installed in the storage tank. A plurality of connecting holes are arranged in a circular pattern in the wall of the circular tube, and the interior of each connecting hole is communicated with the interior of the storage tank. The second piston plate is fixedly connected to the calibration weight through a connecting rope, and the connecting rope is slidably connected to the circular tube.

[0012] The utility model has the following beneficial effects:

[0013] During the operation of the automatic weight hanging robot, when the test weight is retracted into the box for storage, the test weight is synchronously driven to rotate, and the coal powder on the test weight is blown off by the high-speed airflow, thereby completing the cleaning of the coal powder attached to the test weight. The cleaning effect of the test weight is good, and no coal powder will remain on the test weight. Moreover, when the test weight is stored in the box, a high-pressure cavity is always formed in the box due to the continuous inflow of gas, thereby blocking the external coal powder from floating into the box through the airflow at the opening of the box, and the above-mentioned coal powder is directly carried by the airflow into the box after being blown off by the test weight, thereby preventing the external coal powder from floating into the box and adhering to the test weight to affect the use of the test weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the internal structure of the box of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the piston cylinder of the utility model;

[0017] Figure 3 This is a front view of the internal structure of the circular tube of the utility model;

[0018] Figure 4 For this utility model Figure 1 Schematic diagram of the overall structure when the middle part of the guide shell and part of the duct are inverted.

[0019] In the figure: 1. box body; 2. piston cylinder; 3. first piston plate; 4. round tube; 5. cleaning mechanism; 51. storage tank; 52. pressure limiting valve; 53. air inlet hole; 54. electric control valve; 55. air inlet pipe; 56. limit ring; 57. conduit; 58. guide shell; 59. impeller; 6. connecting mechanism; 61. second piston plate; 62. connecting hole; 63. connecting rope; 7. calibration weight. DETAILED DESCRIPTION

[0020] In order to make the technical solution and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The utility model provides a technical solution: Figure 1-4The utility model discloses an automatic hanging weight robot for the calibration process of a coal feeder, comprising a box body 1 installed in the coal feeder, a piston cylinder 2 is fixedly installed on the inner top side of the box body 1, a first piston plate 3 is slidably installed in the piston cylinder 2, a round tube 4 is rotatably installed in the first piston plate 3 through a bearing, and the outer peripheral wall of the round tube 4 is in contact with the inner wall of the bottom opening of the piston cylinder 2, a cleaning mechanism 5 is provided on the piston cylinder 2, a calibration weight 7 is provided on the bottom side of the piston cylinder 2, and the calibration weight 7 is connected to the round tube 4 through a connecting mechanism 6.

[0022] In this embodiment, when the coal feeder is calibrated, the injection of gas into the piston cylinder 2 is stopped. At this time, due to the weight of the first piston plate 3, the round tube 4 and the calibration weight 7, the calibration weight 7 is automatically moved out of the box 1 and falls onto the conveyor belt of the coal feeder to perform the calibration operation of the coal feeder.

[0023] After the calibration operation of the coal feeder is completed, gas is continuously injected into the piston cylinder 2 through the cleaning mechanism 5. The gas injected into the piston cylinder 2 first drives the connecting mechanism 6 to retract into the circular tube 4, so that the calibration weight 7 and the circular tube 4 conflict with each other, and a certain amount of friction is generated between the calibration weight 7 and the circular tube 4. At the same time, when the airflow is discharged from the circular tube 4, the circular tube 4 is driven to rotate slowly through the cleaning mechanism 5, and the cleaning mechanism 5 guides the excess gas in the piston cylinder 2 out of the piston cylinder 2, and forms a high-speed airflow to blow on the calibration weight 7, so that the coal powder attached to the calibration weight 7 is blown off, and the coal powder is brought out of the box body 1 through the airflow;

[0024] After the cleaning of the above-mentioned verification weight 7 is completed, the amount of gas injected into the piston cylinder 2 is slowed down. While maintaining the verification weight 7 stably retracted into the box body 1, a high-pressure chamber is continuously formed in the box body 1, so that the gas at the opening at the bottom end of the box body 1 is discharged. Due to the obstruction of the airflow, the external coal powder will not float into the box body 1.

[0025] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the cleaning mechanism 5 includes a pressure-limiting valve 52, a storage groove 51 with a cross-shaped cross section is opened at the top of the circular tube 4, the bottom end of the pressure-limiting valve 52 is inserted into the top opening of the storage groove 51 and is fixedly connected to the inner wall of the top opening of the storage groove 51, a plurality of air inlet holes 53 are arranged in a circle on the outer peripheral wall of the top of the circular tube 4, and the interior of each air inlet hole 53 is communicated with the interior of the storage groove 51, the air inlet hole 53 is located below the first piston plate 3, an electric control valve 54 is provided on the outer peripheral side of the bottom of the piston cylinder 2, and the exhaust end of the electric control valve 54 is fixedly penetrated through the cylinder wall of the piston cylinder 2, and the air inlet end of the electric control valve 54 is connected to an air inlet pipe 55, and the air inlet pipe 55 is fixedly penetrated through the box wall of the box body 1;

[0026] In this embodiment, after the verification operation of the above-mentioned coal feeder is completed, the control host of the coal feeder controls the electric control valve 54 to open, and the airflow in the air inlet pipe 55 quickly flows into the piston cylinder 2. At this time, due to the blocking of the pressure limiting valve 52, the air pressure in the storage tank 51 and the gas at the bottom of the piston cylinder 2 gradually increase, thereby pushing the first piston plate 3 upward, and finally through the upward movement of the first piston plate 3, the round tube 4 is pulled back into the piston cylinder 2. The device has a high degree of automation and does not require the operator to perform other operations;

[0027] It should be noted that the air inlet pipe 55 is connected to the exhaust end of an external air pump or the exhaust end of an external gas supply device.

[0028] In a further preferred embodiment of the present invention, Figure 2 As shown, a limiting ring 56 is provided between the first piston plate 3 and the electric control valve 54, and the outer peripheral wall of the limiting ring 56 is fixedly connected to the inner wall of the piston cylinder 2, and the distance between the limiting ring 56 and the inner bottom wall of the piston cylinder 2 is greater than the distance between the air inlet hole 53 and the first piston plate 3;

[0029] In this embodiment, during the downward movement of the above-mentioned first piston plate 3, when the piston plate contacts the limiting ring 56, due to the mutual interference between the limiting ring 56 and the first piston plate 3, the downward movement of the first piston plate 3 and the circular tube 4 stops, so that the air inlet hole 53 is always located in the piston cylinder 2, preventing the air inlet hole 53 from slipping out of the piston cylinder 2 and affecting the use of the device.

[0030] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, a conduit 57 is connected and installed on the outer peripheral wall of the top of the piston cylinder 2, and the top end of the conduit 57 is located above the first piston plate 3. A guide shell 58 is provided on the outer peripheral side of the test weight 7, and the bottom end of the conduit 57 is fixedly passed through the shell wall of the guide shell 58, and the exhaust port of the guide shell 58 is set in a flared shape;

[0031] In the present embodiment, as the air pressure in the storage tank 51 rises, the pressure difference at both ends of the pressure limiting valve 52 gradually increases. After the pressure difference at both ends of the pressure limiting valve 52 reaches the threshold, the gas in the top opening of the storage tank 51 is continuously and rapidly discharged from the pressure limiting valve 52, and flows into the guide shell 58 through the conduit 57. Since the amount of gas discharged from the exhaust port of the guide shell 58 is limited, the gas injected into the guide shell 58 by the conduit 57 quickly fills the guide shell 58, and is finally quickly discharged from the exhaust port of the guide shell 58. The discharged high-speed airflow blows on the outer wall of the calibration weight 7. The device has a high degree of automation and does not require the operator to perform other operations.

[0032] In a further preferred embodiment of the present invention, Figure 2 and Figure 3As shown, an impeller 59 is provided above the circular tube 4 at a position corresponding to the pressure limiting valve 52, and the impeller 59 is fixedly connected to the circular tube 4 via a connecting rod;

[0033] In this embodiment, the airflow discharged from the pressure limiting valve 52 directly blows on the impeller 59, continuously applying a torque to the circular tube 4, thereby driving the circular tube 4 and the calibration weight 7 to rotate slowly. The calibration weight 7 can be automatically cleaned by coordinating the airflow to blow on the calibration weight 7. The device has a high degree of automation and does not require the operator to perform other operations.

[0034] In a further preferred embodiment of the present invention, Figure 3 As shown, the connecting mechanism 6 includes a second piston plate 61, which is slidably mounted in the storage tank 51. A plurality of connecting holes 62 are arranged in a circular pattern in the wall of the round tube 4, and the interior of each connecting hole 62 is communicated with the interior of the storage tank 51. The second piston plate 61 is fixedly connected to the test weight 7 through a connecting rope 63, and the connecting rope 63 is slidably connected to the round tube 4.

[0035] In this embodiment, when the airflow flows into the storage cylinder from the air inlet hole 53, it first pushes the second piston plate 61 upward until the piston plate moves between the two openings of the connecting hole 62, and then the gas passes through the connecting hole 62 and over the second piston plate 61 to flow into the top opening of the storage tank 51. At this time, due to the obstruction of the pressure limiting valve 52, the air pressure in the storage tank 51 and the gas at the bottom of the piston cylinder 2 gradually increase;

[0036] During the upward movement of the second piston plate 61, the calibration weight 7 will be pulled toward the circular tube 4 through the connecting rope 63 until the calibration weight 7 and the bottom end of the circular tube 4 collide with each other to generate a large friction force, thereby automatically completing the fixing operation between the calibration weight 7 and the circular tube 4, so that the rotating circular tube 4 can drive the calibration weight 7 to rotate synchronously, and at the same time the calibration weight 7 moves to the position of the guide shell 58.

[0037] Working principle: When the coal feeder is calibrated, the control host of the coal feeder controls the electric control valve 54 to close. At this time, due to the pull of the first piston plate 3 by the weight of the calibration weight 7 and the round tube 4 itself, the round rod quickly slides out of the piston cylinder 2. At the same time, due to the pull of the second piston plate 61 by the calibration weight 7 through the pull rope, the second piston plate 61 located in the storage tank 51 moves downward, so that part of the stretch slides out of the round tube 4. At this time, the calibration weight 7 directly falls on the conveyor belt of the coal feeder to perform the calibration operation of the coal feeder, and due to the deformation of the pull rope, the calibration valve can be tilted at an adaptive angle according to the contact surface;

[0038] It should be noted that, during the downward movement of the first piston plate 3, when the piston plate contacts the stop ring 56, the downward movement of the first piston plate 3 and the round tube 4 stops due to the mutual interference between the stop ring 56 and the first piston plate 3.

[0039] After the above-mentioned verification operation of the coal feeder is completed, the control host of the coal feeder controls the electric control valve 54 to open, and the air flow in the air inlet pipe 55 quickly flows into the piston cylinder 2, and part of the gas flows into the piston cylinder 2 through the air inlet hole 53, pushing the second piston plate 61 upward until the piston plate moves between the two openings of the connecting hole 62, and then the gas passes through the second piston plate 61 through the connecting hole 62 and flows into the top opening of the storage tank 51. At this time, due to the obstruction of the pressure-limiting valve 52, the air pressure in the storage tank 51 and the gas at the bottom of the piston cylinder 2 gradually increase, thereby pushing the first piston plate 3 upward, and finally pulling the round tube 4 back into the piston cylinder 2 through the upward movement of the first piston plate 3;

[0040] It should be noted that, during the upward movement of the second piston plate 61, the calibration weight 7 is pulled toward the round tube 4 through the connecting rope 63 until the calibration weight 7 and the bottom end of the round tube 4 collide with each other to generate a large friction force, and then the calibration weight 7 moves to the position of the guide housing 58;

[0041] As the pressure in the storage tank 51 increases, the pressure difference at both ends of the pressure limiting valve 52 gradually increases. After the pressure difference at both ends of the pressure limiting valve 52 reaches the threshold, the gas in the top opening of the storage tank 51 is continuously and rapidly discharged from the pressure limiting valve 52. The gas discharged from the pressure limiting valve 52 directly blows on the impeller 59, continuously exerting a torque on the round tube 4, thereby driving the round tube 4 and the test weight 7 to rotate slowly.

[0042] The gas discharged into the piston cylinder 2 from the pressure limiting valve 52 flows into the guide shell 58 through the conduit 57. Since the amount of gas discharged from the exhaust port of the guide shell 58 is limited, the gas injected into the guide shell 58 from the conduit 57 quickly fills the guide shell 58 and is finally quickly discharged from the exhaust port of the guide shell 58. The discharged high-speed airflow blows on the outer wall of the calibration weight 7, and with the rotation of the calibration weight 7, the coal powder attached to the calibration weight 7 is blown off, thereby completing the cleaning of the calibration valve.

[0043] It should be noted that the gas discharged into the box body 1 from the guide shell 58 is discharged from the bottom opening of the box body 1 due to the closure of the top of the box body 1 and the outer wall, so that a top-to-bottom airflow is continuously formed in the bottom opening of the box body 1. After the coal powder attached to the test weight 7 is blown away, it is directly carried out of the box body 1 by the airflow in the bottom opening of the box body 1.

[0044] After the cleaning of the test weight 7 is completed, the control host of the coal feeder controls the electric control valve 54 to reduce the air intake in the piston cylinder 2, so that while the above-mentioned round tube 4 is stably retracted into the piston cylinder 2, a certain amount of gas is always discharged from the guide shell 58, and then the gas at the bottom opening of the box body 1 is discharged. Due to the obstruction of the airflow, the external coal powder will not float into the box body 1;

[0045] It should be noted that when the air intake in the piston cylinder 2 decreases, the amount of gas discharged from the pressure limiting valve 52 decreases accordingly. At this time, the thrust of the airflow on the impeller 59 decreases, and at the same time, the torque applied to the circular tube 4 decreases accordingly. Since the friction between the circular tube 4 and the piston cylinder 2 offsets the torque applied to the circular tube 4, the circular tube 4 will not continue to rotate.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic code-hanging robot for use in a coal feeder calibration process, comprising a housing (1) installed in the coal feeder, characterized in that: A piston cylinder (2) is fixedly mounted on the inner top side of the box body (1), a first piston plate (3) is slidably mounted in the piston cylinder (2), a round tube (4) is rotatably mounted in the first piston plate (3) via a bearing, and the outer peripheral wall of the round tube (4) is in contact with the inner wall of the bottom opening of the piston cylinder (2), a cleaning mechanism (5) is provided on the piston cylinder (2), a calibration weight (7) is provided on the bottom side of the piston cylinder (2), and the calibration weight (7) is connected to the round tube (4) via a connecting mechanism (6).

2. The automatic code hanging robot used in the coal feeder calibration process according to claim 1 is characterized by: The cleaning mechanism (5) comprises a pressure limiting valve (52). The top of the circular tube (4) is provided with a storage groove (51) having a cross-shaped cross section. The bottom end of the pressure limiting valve (52) is inserted into the top opening of the storage groove (51) and is fixedly connected to the inner wall of the top opening of the storage groove (51). The outer peripheral wall of the top of the circular tube (4) is provided with a plurality of air inlet holes (53) arranged in a circular pattern, and the interior of each air inlet hole (53) is communicated with the interior of the storage groove (51). The air inlet holes (53) are located below the first piston plate (3). An electric control valve (54) is provided on the outer peripheral side of the bottom of the piston cylinder (2), and the exhaust end of the electric control valve (54) is fixedly penetrated through the cylinder wall of the piston cylinder (2). The air inlet end of the electric control valve (54) is connected to an air inlet pipe (55), and the air inlet pipe (55) is fixedly penetrated through the box wall of the box body (1).

3. The automatic code-hanging robot for the coal feeder calibration process according to claim 2 is characterized in that: A limiting ring (56) is provided between the first piston plate (3) and the electric control valve (54), and the outer peripheral wall of the limiting ring (56) is fixedly connected to the inner wall of the piston cylinder (2), and the distance between the limiting ring (56) and the inner bottom wall of the piston cylinder (2) is greater than the distance between the air inlet hole (53) and the first piston plate (3).

4. The automatic code-hanging robot for the coal feeder calibration process according to claim 3 is characterized in that: A conduit (57) is connected and installed on the outer peripheral wall of the top of the piston cylinder (2), and the top end of the conduit (57) is located above the first piston plate (3). A guide shell (58) is provided on the outer peripheral side of the calibration weight (7), and the bottom end of the conduit (57) is fixedly passed through the shell wall of the guide shell (58), and the exhaust port of the guide shell (58) is arranged in a flared shape.

5. The automatic code-hanging robot used in the coal feeder calibration process according to claim 4, characterized in that: An impeller (59) is provided above the circular tube (4) at a position corresponding to the pressure limiting valve (52), and the impeller (59) is fixedly connected to the circular tube (4) via a connecting rod.

6. The automatic code-hanging robot used in the coal feeder calibration process according to claim 5, characterized in that: The connecting mechanism (6) comprises a second piston plate (61) which is slidably mounted in the storage tank (51). A plurality of connecting holes (62) are arranged in a circular pattern in the wall of the circular tube (4), and the interior of each connecting hole (62) is communicated with the interior of the storage tank (51). The second piston plate (61) is fixedly connected to the test weight (7) via a connecting rope (63), and the connecting rope (63) is slidably connected to the circular tube (4).

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