Grab bucket steel wire rope limiting device and vinasse grab bucket

Abstract

The utility model discloses a grab bucket steel wire rope limiting device and a vinasse grab bucket. The device comprises a protection switch for cutting off a closed circuit and a triggering part arranged in the protection switch; the protection switch is provided with a first induction end and a second induction end which correspond up and down; the trigger part comprises an elastic piece which moves downwards and deforms along with stress of the steel wire rope. A trigger piece is arranged on the elastic piece, and the trigger piece moves up and down under the action of the elastic piece to trigger the protection switch; when the trigger piece moves downwards to be in contact with the second induction end, the protection switch is triggered to cut off the closed circuit, the grab bucket motor stops working, and the opening operation of the grab bucket body reaches a stop end point; when the trigger piece moves upwards to make contact with the first induction end, the protection switch is triggered to cut off the closed circuit, the grab bucket motor stops working, and the closing operation of the grab bucket body reaches the stopping end point. The problems of jumping and overlapping of the steel wire ropes can be solved, mutual friction of the steel wire ropes due to overlapping is avoided, loss is reduced, input cost is reduced, and the service life of the steel wire ropes is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of hoisting equipment, and in particular to a grab bucket wire rope limiting device and a wine lees grab bucket. Background Art

[0002] Grab bucket refers to a special tool used by cranes to grab goods or bulk materials. The wire rope in the pulley of the grab bucket currently used has a very high rate of jumping out of the groove. It is mainly used with two sets of lifting devices. One set of lifting grab bucket itself is called lifting, and the other set of opening and closing grab bucket through the upper and lower pulleys is called opening and closing. It is mainly used for loading and unloading bulk materials such as sand or wine tanks. If the lifting and opening and closing are not coordinated well during use, the opening and closing wire rope will be loose and cause the wire rope to jump out of the groove.

[0003] It is understood that the current crane grab wire rope limitless device used in the sauce-flavor liquor brewing industry requires the driver to rely on hearing and vision to judge the opening and closing of the grab bucket. When judging visually, the driver has a blind spot, which can easily lead to misjudgment. When judging auditorily, when the required sound signal is heard, the wire rope and motor have already been damaged to a certain extent. As a result, the following problems may occur:

[0004] First, when the grab bucket is opened, the driver's misjudgment of the grab bucket may cause the wire rope to be too loose. When tightening it again, it will cause the wire rope to jump and overlap. The wire ropes will rub against each other due to overlap, which will easily cause wear and tear. As a result, the frequency of wire rope replacement is high, which increases the company's investment costs.

[0005] Second, it increases the workload of maintenance personnel.

[0006] Therefore, it is urgent to provide a grab bucket wire rope limiting device and a wine lees grab bucket to solve the above-mentioned technical problems. Utility Model Content

[0007] The present application provides a grab bucket wire rope limit device and a wine lees grab bucket, which can solve the problems of wire rope jumping and overlapping, avoid mutual friction of wire ropes due to overlapping, reduce loss, reduce investment cost, and increase the service life of wire ropes.

[0008] According to some embodiments, the present application provides a grab bucket wire rope limiting device, comprising: a protection switch for cutting off a closed circuit and a trigger part arranged in the protection switch; the protection switch has a first sensing end and a second sensing end corresponding to upper and lower positions; the trigger part comprises an elastic member, and the elastic member is deformed as the wire rope is subjected to force and moves downward; a trigger member is arranged on the elastic member, and the trigger member is used to move up and down under the deformation of the elastic member to trigger the protection switch; when the trigger member moves downward to contact the second sensing end, the protection switch is triggered to cut off the closed circuit, the grab bucket motor stops working, and the grab bucket body opening operation reaches the stop end; when the trigger member moves upward to contact the first sensing end, the protection switch is triggered to cut off the closed circuit, the grab bucket motor stops working, and the grab bucket body closing operation reaches the stop end.

[0009] Optionally, the limiting device further comprises a tension member, which moves downward as the force applied to the steel wire rope causes the elastic member to deform.

[0010] Optionally, the protection switch is arranged on the side of the wire rope drum; a limit shaft is arranged below the wire rope drum, and the limit shaft rotates synchronously with the wire rope drum under the action of the wire rope; the lower end of the tension member is connected to the limit shaft, and the upper end of the tension member is connected to the elastic member.

[0011] Optionally, spiral limit grooves are respectively provided on the limit shaft and the wire rope drum along their axial directions, and the spiral limit grooves of the two correspond to each other and have consistent spacing; the upper end of the wire rope is wound on the spiral limit groove of the wire rope drum, and the lower end of the wire rope passes through the spiral limit groove on the limit shaft and is connected to the fixed pulley on the grab body.

[0012] Optionally, the depth of the spiral limiting groove on the limiting shaft is greater than the depth of the spiral limiting groove on the wire rope drum.

[0013] Optionally, a roller is provided on the limiting shaft; the tension member is configured as a thin steel wire rope, the lower end of the thin steel wire rope is wound around the roller, and the upper end of the thin steel wire rope is connected to the lower end of the elastic member.

[0014] Optionally, the elastic member is configured as a pressure spring, the upper end of the pressure spring is connected to the inner top of the protection switch, and the lower end of the pressure spring is connected to the upper end of the thin steel wire rope.

[0015] Optionally, the trigger member is configured as a paddle, and the paddle is configured at the lower end of the pressure spring and is configured to have a first paddle end and a second paddle end corresponding to upper and lower positions; when the second paddle end moves downward to contact the second sensing end, the protection switch is triggered to cut off the closed circuit, the grab motor stops working, and the grab body opening operation reaches the stop end; when the first paddle end moves upward to contact the first sensing end, the protection switch is triggered to cut off the closed circuit, the grab motor stops working, and the grab body closing operation reaches the stop end.

[0016] According to some embodiments, the present application also provides a wine lees grab, comprising: a wire rope, a grab motor, a grab body, a wire rope drum, a fixed pulley, a grab arm, an upper supporting beam, a lower supporting beam and the grab wire rope limiting device; the grab motor is arranged on the bottom surface of the upper supporting beam, the wire rope drum, the fixed pulley and the wire rope connecting the upper supporting beam and the lower supporting beam are between the upper supporting beam and the lower supporting beam, and the grab motor is connected to the shaft of the wire rope drum; the grab arm is arranged at the corners of the bottom surface of the upper supporting beam, the grab body is arranged below the lower supporting beam, and the outer corners of the grab body are connected to the corresponding lower ends of the grab arm; the protection switch of the grab wire rope limiting device is installed on the side of the wire rope drum.

[0017] The embodiments of the present disclosure have at least the following advantages:

[0018] By using a combination of a protection switch and a trigger unit, the stop end point of the grab body during opening or closing operations can be controlled to ensure that the wire rope will not be too loose and jump out of the groove during opening, and that the motor will not do useless work during closing. This solves the problems of wire rope jumping out of the groove and overlapping, avoids friction between wire ropes due to overlapping, reduces losses, reduces investment costs, and at the same time increases the service life of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a side view schematic diagram of a wine lees grab bucket in an embodiment of the present application;

[0021] Figure 2 A front view of the wine lees grab bucket in the embodiment of the present application;

[0022] Figure 3 yes Figure 1 Enlarged view of part A in .

[0023] Figure numerals: 1. protection switch; 11. first sensing end; 12. second sensing end; 2. trigger part; 21. elastic member; 22. trigger member; 221. first paddle end; 222. second paddle end; 3. tension member; 4. limit shaft; 5. roller; 6. mounting rod; 71. wire rope; 72. grab bucket motor; 73. grab bucket body; 74. wire rope drum; 75. fixed pulley; 76. grab bucket arm rod; 77. upper supporting beam; 78. lower supporting beam. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not be construed as any limitation, and the various embodiments can be combined with each other and quoted from each other without contradiction.

[0025] The following is a detailed description of a grab bucket wire rope limiting device provided in this embodiment in conjunction with the accompanying drawings. Figure 1-Figure 3 As shown, it includes: a protection switch 1 for cutting off a closed circuit and a trigger part 2 arranged in the protection switch 1; wherein the protection switch 1 has a first sensing end 11 and a second sensing end 12 corresponding to the upper and lower positions; the trigger part 2 includes an elastic member 21, and the elastic member 21 is deformed by moving downward as the force of the wire rope 71 is applied; a trigger member 22 for triggering the protection switch 1 is arranged on the elastic member 21; when the trigger member 22 moves downward to contact the second sensing end 12, the protection switch 1 cuts off the closed circuit, the grab motor 72 stops working, and the opening operation of the grab body 73 reaches the stop end; when the trigger member 22 moves upward to contact the first sensing end 11, the protection switch 1 cuts off the closed circuit, the grab motor 72 stops working, and the closing operation of the grab body 73 reaches the stop end.

[0026] In this embodiment, when the grab body 73 is opened, the elastic member 21 moves downward with the force of the wire rope 71 and is deformed. During the deformation process, the trigger member 22 moves downward. When the trigger member 22 moves downward to contact the second sensing end 12, the opening operation of the grab body 73 reaches the maximum value. At this time, the protection switch 1 cuts off the closed circuit, the grab motor 72 stops working, and the opening operation stops. At this time, the wire rope 71 will not continue to loosen, so the wire rope 71 will not jump on the wire rope drum 74; when the grab body 73 is closed, the elastic member 21 recovers. It elastically returns to the initial position, and moves upward with the trigger member 22 during the recovery process. When the trigger member 22 moves upward to contact the first sensing end 11, the grab body 73 is just closed. At this time, the protection switch 1 cuts off the closed circuit, the grab motor 72 stops working, and the closing operation stops, so the grab motor 72 will not be damaged. In this way, by adding the limit device of the present application, the problem of wire rope 71 jumping and overlapping can be solved, the wire rope 71 can be prevented from rubbing against each other due to overlapping, the loss can be reduced, the investment cost can be reduced, and the service life of the wire rope 71 and the grab motor 72 can be improved.

[0027] The present application has a simple structure and does not require changing the original design. It only adds a corresponding protection structure on the basis of the original structure. When the grab body 73 opens to a certain position, the trigger member 22 triggers the protection switch 1 to cut off the power of the grab motor 72, preventing the wire rope drum 74 from continuing to work and causing the grab body 73 to continue to open, and preventing the wire rope 71 from being excessively loosened, causing the wire rope 71 to jump on the grab body 73; when the grab body 73 is closed to a certain position, the trigger member 22 can trigger the protection switch 1 again to cut off the power of the grab motor 72, and the closing operation stops, avoiding damage to the grab motor 72.

[0028] Please continue to refer to Figure 1-Figure 3 As shown, in this embodiment, it should be noted that the protection switch 1 is arranged on the side of the wire rope drum 74, and a limit shaft 4 is arranged below the wire rope drum 74, the limit shaft 4 and the wire rope drum 74 are arranged in parallel, and the limit shaft 4 and the wire rope drum 74 are respectively provided with spiral limit grooves along their axial directions, and the spiral limit grooves of the two correspond to each other and have the same spacing; the upper end of the wire rope 71 is wound on the spiral limit groove of the wire rope drum 74, and the lower end of the wire rope 71 passes through the spiral limit groove on the limit shaft 4 and is connected to the fixed pulley 75 on the grab bucket body 73. As a result, the limit shaft 4 can rotate synchronously with the wire rope drum 74 under the action of the wire rope 71. Since the spiral limit groove on the original wire rope drum 74 is too shallow, the wire rope is easy to overlap when the grab bucket body 73 is closed. Therefore, the depth of the spiral limit groove on the limit shaft 4 is set to be greater than the depth of the spiral limit groove on the wire rope drum 74, thereby controlling the wire rope 71 to jump or overlap.

[0029] Preferably, the mounting rod 6 is respectively connected between two adjacent grab arm rods 76, and the two ends of the mounting rod 6 are respectively configured to be stretchable to match the small swinging movement of the grab arm rod 76. The two ends of the limit shaft 4 are respectively rotatably mounted on the two relative mounting rods 6 through bearings, and the mounting rod 6 can play a supporting and mounting role for the limit shaft 4.

[0030] In some embodiments, the limiting device further includes a tension member 3, which moves downward as the force of the steel wire rope 71 is applied and pulls the elastic member 21 to deform, the lower end of the tension member 3 is connected to the limiting shaft 4, and the upper end of the tension member 3 is connected to the elastic member 21. Preferably, a roller 5 is installed on the limiting shaft 4, and the lower end of the tension member 3 is connected to the roller 5. When the grab body 73 is opened, the steel wire rope 71 rotates with the limiting shaft 4, and then the roller 5 rotates synchronously to reel the tension member 3, thereby stretching the elastic member 21.

[0031] The tension member 3 is configured as a thin steel wire rope, which is connected between the roller 5 and the elastic member 21. The lower end of the thin steel wire rope is wound around the roller 5, and the upper end of the thin steel wire rope is connected to the lower end of the elastic member 21. When the grab body 73 is opened, the thin steel wire rope is wound by the roller 5, and then the thin steel wire rope stretches the elastic member 21, thereby deforming the elastic member 21.

[0032] In some embodiments, the elastic member 21 is configured as a pressure spring, the stretching length of the pressure spring is positively correlated with the distance between the wire rope drum 74 and the fixed pulley 75 of the grab bucket body 73, the upper end of the pressure spring is connected to the inner top of the protection switch 1, the lower end of the pressure spring is provided with a trigger member 22, and is also connected to the upper end of the thin wire rope. The use of the pressure spring can ensure that the thin wire rope is always in a taut state.

[0033] The trigger member 22 is configured as a paddle, which is configured at the lower end of the pressure spring and is configured to have a first paddle end 221 and a second paddle end 222 corresponding to upper and lower positions; when the pressure spring is stretched downward, the second paddle end 222 moves downward to contact the second sensing end 12 of the protection switch 1, the protection switch 1 cuts off the closed circuit, the grab motor 72 stops working, and the opening operation of the grab body 73 reaches the stop end, that is, the opening of the grab body 73 reaches the maximum value; when the pressure spring contracts upward, the first paddle end 221 moves upward to contact the first sensing end 11 of the protection switch 1, the protection switch 1 cuts off the closed circuit, the grab motor 72 stops working, and the closing operation of the grab body 73 reaches the stop end, that is, the grab body 73 is closed in place.

[0034] The protection switch 1 is electrically connected to the grab bucket motor 72. Activating the protection switch 1 can cut off the power supply to the grab bucket motor 72 to ensure the safety of use.

[0035] Please refer to Figure 1 , Figure 2 As shown, the embodiment of the present application provides a wine lees grab, including a wire rope 71, a grab motor 72, a grab body 73, a wire rope drum 74, a fixed pulley 75, a grab arm 76, an upper support beam 77, a lower support beam 78 and the above-mentioned grab wire rope limiting device; the grab motor 72 is arranged on the bottom surface of the upper support beam 77, and the wire rope drum 74, the fixed pulley 75 and the wire rope 71 connecting the upper support beam 77 and the lower support beam 78 are arranged between the upper support beam 77 and the lower support beam 78. The upper support beam 77 is provided with grab arm rods 76 at the bottom corners, and the grab body 73 is provided below the lower support beam 78. The outer corners of the grab body 73 are connected to the lower ends of the corresponding grab arm rods 76. The protection switch 1 of the grab wire rope limit device is installed on the side of the wire rope drum 74, and the mounting rod 6 is installed between two adjacent grab arm rods 76. The two ends of the limit shaft 4 of the grab wire rope limit device are respectively rotatably mounted on the two opposite mounting rods 6 through bearings. The above main structure of the wine lees grab is well known in the art and will not be described in detail here.

[0036] The implementation principle of this embodiment is as follows: when in use, the staff starts the grab motor 72, the grab motor 72 rotates forward and controls the wire rope drum 74 to work so that the wire rope 71 is lowered, and the grab body 73 performs an opening operation. When the grab body 73 is in the opening operation, the wire rope 71 synchronously drives the limit shaft 4 to rotate. While the limit shaft 4 rotates, the thin wire rope is wound through the roller 5, thereby stretching the pressure spring. The pressure spring stretches downward and moves the paddle downward until the second paddle end 222 of the paddle moves to the second sensing end 12 of the contact protection switch 1. At this time, the opening operation of the grab body 73 reaches the maximum value. At the same time, because the second paddle end 222 of the paddle contacts the second sensing end 12 of the protection switch 1, the protection switch 1 is started. Because the protection switch 1 is connected to the grab motor 72, the grab motor 72 is powered off after the protection switch 1 is started, and then the wire rope drum 74 no longer works, and the wire rope 71 will not continue to loosen, so the wire rope 71 will not cause jumping on the wire rope drum 74.

[0037] After the grab bucket body 73 grabs the wine lees, the staff starts the grab bucket motor 72 again. The grab bucket motor 72 rotates in the opposite direction and drives the wire rope drum 74 to work to reel in the wire rope 71. The grab bucket body 73 is closed. At this time, the thin wire rope on the roller 5 is unwound, and the pressure spring shrinks upward to the initial position while moving the paddle upward. The first paddle end 221 of the paddle moves to the first sensing end 11 of the contact protection switch 1. At this time, the grab bucket body 73 is just closed. At the same time, because the first paddle end 221 of the paddle contacts the first sensing end 11 of the protection switch 1, the protection switch 1 is started. Because the protection switch 1 is connected to the grab bucket motor 72, the grab bucket motor 72 is powered off after the protection switch 1 is started, the grab bucket motor 72 stops rotating, and the closing operation stops, so the grab bucket motor 72 will not be damaged.

[0038] It should be understood that the above specific embodiments of the present application are only used to illustrate or explain the principles of the present application, and do not constitute a limitation to the present application. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present application should be included in the protection scope of the present application. In addition, the claims attached to the present application are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A grab bucket wire rope limiting device, characterized in that: include: A protection switch (1) for cutting off a closed circuit and a trigger unit (2) arranged in the protection switch (1); The protection switch (1) has a first sensing end (11) and a second sensing end (12) corresponding to upper and lower positions; The triggering part (2) comprises an elastic member (21), and the elastic member (21) moves downward as the force applied to the steel wire rope (71) causes the elastic member (21) to deform; A triggering member (22) is provided on the elastic member (21), and the triggering member (22) is used to move up and down under the deformation of the elastic member (21) to trigger the protection switch (1); When the trigger member (22) moves downward to contact the second sensing end (12), the protection switch (1) is triggered to cut off the closed circuit, the grab motor (72) stops working, and the opening operation of the grab body (73) reaches the stop end; When the trigger member (22) moves upward to contact the first sensing end (11), the protection switch (1) is triggered to cut off the closed circuit, the grab motor (72) stops working, and the closing operation of the grab body (73) reaches the stop end.

2. The grab bucket wire rope limiting device according to claim 1, characterized in that: The limiting device also includes a tension member (3), which moves downward as the force applied to the steel wire rope (71) causes the tension member (3) to pull the elastic member (21) to deform.

3. The grab bucket wire rope limiting device according to claim 2, characterized in that: The protection switch (1) is arranged on the side of the wire rope drum (74); A limit shaft (4) is arranged below the wire rope drum (74), and the limit shaft (4) rotates synchronously with the wire rope drum (74) under the action of the wire rope (71); The lower end of the tension member (3) is connected to the limiting shaft (4), and the upper end of the tension member (3) is connected to the elastic member (21).

4. The grab bucket wire rope limiting device according to claim 3 is characterized in that: The limiting shaft (4) and the wire rope drum (74) are respectively provided with spiral limiting grooves along their axial directions, and the spiral limiting grooves of the two correspond to each other and have the same spacing; The upper end of the steel wire rope (71) is wound on the spiral limiting groove of the steel wire rope drum (74), and the lower end of the steel wire rope (71) passes through the spiral limiting groove on the limiting shaft (4) and is connected to the fixed pulley (75) on the grab bucket body (73).

5. The grab bucket wire rope limiting device according to claim 4, characterized in that: The depth of the spiral limiting groove on the limiting shaft (4) is greater than the depth of the spiral limiting groove on the wire rope drum (74).

6. The grab bucket wire rope limiting device according to any one of claims 3 to 5, characterized in that: A roller (5) is arranged on the limiting shaft (4); The tension member (3) is configured as a thin steel wire rope, the lower end of the thin steel wire rope is wound around the roller (5), and the upper end of the thin steel wire rope is connected to the lower end of the elastic member (21).

7. The grab bucket wire rope limiting device according to claim 6, characterized in that: The elastic member (21) is configured as a pressure spring, the upper end of the pressure spring is connected to the inner top of the protection switch (1), and the lower end of the pressure spring is connected to the upper end of the thin steel wire rope.

8. The grab bucket wire rope limiting device according to claim 7, characterized in that: The trigger member (22) is configured as a paddle, the paddle is arranged at the lower end of the pressure spring, and is configured to have a first paddle end (221) and a second paddle end (222) corresponding to upper and lower positions; When the second paddle end (222) moves downward to contact the second sensing end (12), the protection switch (1) is triggered to cut off the closed circuit, the grab motor (72) stops working, and the grab body (73) opens and operates to the stop end; When the first paddle end (221) moves upward to contact the first sensing end (11), the protection switch (1) is triggered to cut off the closed circuit, the grab motor (72) stops working, and the closing operation of the grab body (73) reaches the stop end.

9. A lees grab bucket, characterized in that: include: A steel wire rope (71), a grab motor (72), a grab body (73), a steel wire rope drum (74), a fixed pulley (75), a grab arm (76), an upper bearing beam (77), a lower bearing beam (78), and a grab steel wire rope limiting device as claimed in any one of claims 1 to 8; The grab motor (72) is arranged on the bottom surface of the upper support beam (77), the wire rope drum (74), the fixed pulley (75) and the wire rope (71) connecting the upper support beam (77) and the lower support beam (78) are arranged between the upper support beam (77) and the lower support beam (78), and the grab motor (72) is connected to the shaft of the wire rope drum (74); The grab arm rod (76) is provided at the bottom corners of the upper support beam (77), the grab body (73) is provided below the lower support beam (78), and the outer corners of the grab body (73) are connected to the corresponding lower ends of the grab arm rods (76); The protection switch (1) of the grab bucket wire rope limit device is installed on the side of the wire rope drum (74).

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