A crane drum

Abstract

The application provides a crane winding drum, relates to the technical field of crane winding drums, and comprises a crane winding drum main body, a reciprocating guide assembly and a rope guide assembly, the reciprocating guide assembly comprises a reciprocating lead screw, and the rope guide assembly comprises two guide arms, a trapezoidal block, two pulleys, a supporting arm, two first sliding blocks, a seat plate, a driving arm and a multistage electric push rod; annular grooves are arranged on the surfaces of the two pulleys; in the process of controlling the reciprocating movement of the rope guide assembly along the reciprocating lead screw axis, the multistage electric push rod is used to retract a first-stage control driving arm to move between the two guide arms, the slope of the right-angled trapezoid at one end of the driving arm is matched with the slope at the bottom of the trapezoidal block, the two guide arms are pulled to slide inside one end of the supporting arm, so that the guide arms carry the two pulleys away, the winding drum main body is facilitated to guide the winding of the rope to the next layer, the rope is facilitated to be orderly wound layer by layer, and different lengths of the rope can be adapted to.

Description

TECHNICAL FIELD

[0001] The present application relates to the crane drum technical field, specifically a crane drum. BACKGROUND

[0002] The crane is a multi-action machine for vertically lifting and horizontally transporting heavy objects within a certain range. Some cranes have the characteristics of intermittent motion, that is, the corresponding mechanisms for taking, moving, and unloading in a work cycle work alternately. Cranes are increasingly used and developed in the market. Some accidents often occur when the crane lifts and moves without supporting legs, and the speed is faster than that of a crawler crane (crawler crane). The operation is stable, the lifting capacity is large, the crane can walk with the load within a certain range, but the road must be flat and solid, the tire pressure must meet the requirements, and the lifting distance from the ground must not exceed 50 cm. Long-distance walking with load is prohibited. To ensure safety, domestic cranes basically prohibit lifting without supporting legs. The types of steel wire ropes used with cranes include phosphating coated steel wire ropes, galvanized steel wire ropes, and smooth steel wire ropes.

[0003] In bridge construction projects, the hoisting machinery used can be divided into four categories according to its structure and performance: light and small hoisting equipment, bridge type hoisting machinery, arm type hoisting machine, and cable type hoisting machine. Light and small hoisting equipment such as jacks, pneumatic hoists, electric hoists, balance hoists (also known as balance cranes), winches, etc. Bridge type hoisting machinery such as beam cranes, etc. Arm type hoisting machine such as fixed rotary crane, tower crane, truck crane, tire crane, crawler crane, etc. Cable type hoisting machine such as elevator, etc. According to the structure, the crane is mainly divided into light and small hoisting equipment, bridge type (bridge crane, gantry crane), arm type (self-propelled crane, tower crane, gantry crane, railway crane, floating crane, mast crane), and cable type.

[0004] The structure of the crane usually consists of three parts: one is the frame; two is the mechanism (including lifting mechanism, running mechanism, rotating mechanism, amplitude changing mechanism, etc.); three is the control system. The lifting mechanism is usually composed of a main transmission device connected by a belt clutch or a gear, which makes the lifting drum rotate forward and backward to wind and unwind the drum wire rope, and makes the hook rise and fall.

[0005] The rope guide device of the rope winding drum in the crane in the patent document CN107074512B has an open modular body structure, and can easily and advantageously achieve the guiding work of ropes of different sizes, and in the case that the diameter of the rope winding drum has a small range, the change of the same rope guide device is very small, and even more chain links do not need to be added, and the openness of the body not only allows the positioning of the basic elements of the rope guide device inside it, but also allows the installation of limit switches, sensors and elements for keeping the rope groove clean in the open space of the body, and in addition, the open arrangement can also easily perform the cleaning work of the rope guide device, and the relevant components and cleaning conditions can be directly observed.

[0006] However, in the process of implementing the above technical solutions, it is found that the above technical solutions have the following technical problems:

[0007] The rope guide device of the rope winding drum in the crane has an open modular body structure, and can achieve the winding and releasing structure of the telescopic guide of different sizes, and has visibility and easy cleaning, but in the actual application process, the rope guide device is annularly active outside the crane winding drum and remains open, and the inside of the rope guide device is provided for the rope to pass through, which is difficult to provide the rope with multiple layers outside the winding drum, and is not conducive to meeting the demand of different lifting heights of a single crane. SUMMARY

[0008] In order to overcome the deficiency that the rope guide device of the existing rope winding drum in the crane is difficult to provide the rope with multiple layers outside the winding drum in the actual application process, and is not conducive to meeting the demand of different lifting heights of a single crane, the present application provides a crane winding drum, which is driven by the reciprocating screw rod to drive the screw sleeve along the reciprocating screw rod axis direction reciprocating motion, so that the support arm fixed with the two first sliding blocks moves along the direction of the two guide long rods, and can support the two pulleys between the two guide arms to drive the crane winding drum main body passing between them to wind outside the crane winding drum main body;

[0009] At the same time, when the reciprocating screw rod controls the screw sleeve to drive the support arm to move to one end, the one-level control driving arm is retracted between the two guide arms to the side of the reciprocating guide assembly by the multi-stage electric push rod, and the driving arm one end right trapezoidal slope and trapezoidal block bottom slope cooperate to pull the two guide arms to slide inside the support arm one end, so that the guide arm carries the two pulleys away, which is convenient for guiding the crane winding drum main body to wind the rope to the next layer, and is conducive to orderly winding the rope layer by layer, and is convenient for adapting to different lengths of the rope.

[0010] The technical solution adopted by the embodiment of the present application to solve the technical problems is:

[0011] A crane drum comprises a crane drum body, a reciprocating guide assembly and a rope guide assembly, the reciprocating guide assembly is arranged at the top of the crane drum body;

[0012] The rope guide assembly is arranged on one side of the crane drum body;

[0013] The two ends of the crane drum body are respectively provided with a reducer assembly and a support seat, and the bottom of one end of the reducer assembly is provided with a motor parallel to the axis of the crane drum body;

[0014] The reciprocating guide assembly comprises a reciprocating screw rod, the two ends of the reciprocating screw rod are integrally formed with support shaft rods, the outside of the reciprocating screw rod is sleeved with a screw rod sleeve, the inside of the screw rod sleeve is assembledly connected with a limiting head extending into the inside of the reciprocating screw rod channel, the bottom of the screw rod sleeve is assembledly connected with a second sliding block, and the inside of the two ends of the second sliding block is provided with a guide long rod parallel to the reciprocating screw rod;

[0015] The rope guide assembly comprises two guide arms, one end of the two guide arms is integrally formed with a same trapezoidal block, two pulleys are arranged between the ends of the two guide arms away from the trapezoidal block, annular grooves are formed in the surfaces of the two pulleys, a same support arm is arranged on the outside of the two guide arms, two first sliding blocks are assembledly connected to the end of the support arm away from the trapezoidal block, a seat plate is integrally formed on the outer surface of the support arm, a driving arm is slidably connected between the tops of the two guide arms, one end of the driving arm is a right trapezoid and is adaptively connected between the bottom surfaces of the trapezoidal blocks, and a plurality of electric push rods are assembledly connected between the end of the driving arm away from the trapezoidal block and the surface of the seat plate;

[0016] Among them, the two first sliding blocks are respectively located on the two sides of the second sliding block, the interiors of the two second sliding blocks and the first sliding block are jointly penetrated through the two assembled short rods, and the two ends of the assembled short rods are connected with nuts to fix the second sliding blocks and the first sliding block, in the rotating state of the reciprocating screw rod, the cooperation of the limiting head and the surface channel and the sliding of the second sliding block on the outside of the two guide long rods make the screw rod sleeve drive the second sliding block and the first sliding block to reciprocate along the direction of the axis of the reciprocating screw rod, the support arm drives the two pulleys between the two guide arms at the bottom of the trapezoidal block to move, the position of the rope around the surface of the crane drum body is changed when the rope passes between the two pulleys.

[0017] In a possible implementation, one end of the motor rotating shaft is connected with a gear inside the speed reducer assembly, and the motor rotating shaft passes through the inside of the speed reducer assembly, and a first belt pulley is assembled and connected to the part of the motor rotating shaft passing through the inside of the speed reducer assembly; one end of each of the support shafts is integrally formed with an extension shaft, and a second belt pulley is pivotally connected to the outside of the extension shaft, and the first belt pulley and the second belt pulley are connected with a transmission belt outside.

[0018] In a possible implementation, the outer part of one end of each of the support shafts is provided with a stand, and the bottom of one of the stands is assembled and connected with a seat; two guide long rods are symmetrically arranged on the two sides of the bottom of the reciprocating screw rod, and the two ends are respectively assembled and fixed with the two stands; the other stand is assembled to the top of the speed reducer assembly, and the seat is assembled to the top of the support seat, so that the reciprocating screw rod driven by the support to rotate drives the rope guide assembly connected with the second sliding block to move along the direction of the axis of the crane drum body.

[0019] In a possible implementation, the guide arms and the support arm maintain a vertical state, and the included angle between each of the guide arms and a horizontal plane is forty-five degrees, and the distance between the inner side surface of the support arm and the side surface of the guide arm close to the crane drum body and the axis of the crane drum body is the same.

[0020] In a possible implementation, the rope passes through between two pulleys in a vertical state, and the intersection point between the annular grooves of the two pulleys is circular when projected vertically onto a plane.

[0021] In a possible implementation, a gap filler is assembled and connected between the middle parts of the two guide arms, a spring is arranged between the top of the gap filler and the bottom of one end of the support arm, and the top and the bottom of the spring are respectively welded and connected with screws; one of the screws is threadedly connected to the inside of the support arm, and the other screw is threadedly connected to the inside of the gap filler.

[0022] In a possible implementation, the inner angle of the support arm is one hundred and thirty-five degrees, the support arm is divided into a horizontal section and an inclined section, a strip-shaped groove is arranged at the bottom of the drive arm, and a limiting strip rod is integrally formed at the outer inclined surface of the support arm; the drive arm is slidably connected to the outside of the limiting strip rod through the strip-shaped groove, and the bottom of each end of the first sliding block is buckled to the top of the corresponding guide long rod through an arc-shaped strip-shaped groove.

[0023] In a possible implementation, the outside of the second belt pulley and the first belt pulley is processed into a gear type, and the inside of the transmission belt is processed with a rack engaged with the second belt pulley and the first belt pulley.

[0024] In a possible implementation, the outer part of the extension shaft and the outer part of the motor upper rotating shaft from the reducer assembly are equipped with mutually meshed gears.

[0025] In a possible implementation, the bottom of each of the two support shafts is provided with a mounting block, and a proximity switch is fixedly connected inside the mounting block; the two proximity switches are arranged to face each other, and the second sliding block carries the two first sliding blocks to move between the two proximity switches, and the processor monitors the position of the second sliding block by means of the two proximity switches to control the extension state of the multi-stage electric push rod.

[0026] The beneficial effects of the present application are:

[0027] Firstly, in the present scheme, when the reciprocating screw rod rotates, it drives the screw sleeve to reciprocate along the axis direction of the reciprocating screw rod, so that the support arm fixedly assembled with the two first sliding blocks moves along the direction of the two guide long rods, and the two pulleys between the two guide arms drive the crane drum body passing through them to be wound to the outside of the crane drum body turn by turn;

[0028] Meanwhile, when the reciprocating screw rod controls the screw sleeve to drive the support arm to move to one end thereof, the multi-stage electric push rod retracts one stage to drive the arm to move to one side of the reciprocating guide assembly between the two guide arms, and the slant surface of the right-angled trapezoidal end of the driving arm cooperates with the slant surface at the bottom of the trapezoidal block to pull the two guide arms to slide inside the end of the support arm, so that the guide arm carries the two pulleys away, which is convenient for guiding the crane drum body to wind the rope to the next layer, and is conducive to orderly winding the rope turn by turn and layer by layer, and is convenient for adapting to ropes of different lengths.

[0029] Secondly, in the present scheme, two proximity switches are arranged at the bottom of the two support shafts to face each other, and when the reciprocating screw rod drives the screw sleeve to drive the second sliding block and the first sliding block to reciprocate outside the two guide long rods, the positions are monitored by the two proximity switches, so that the multi-stage movable ends of the multi-stage electric push rod are gradually retracted into the inside of the fixed end by means of the starting state of the two proximity switches, which is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a whole structure schematic view of a crane drum of the present application;

[0031] Figure 2 It is a whole structure schematic view of a crane drum of the present application;

[0032] Figure 3 It is a whole structure schematic view of a crane drum of the present application; Figure 2 It is an enlarged schematic view of part A of the present application;

[0033] Figure 4 Figure 1 is a schematic view of a connection structure of a crane drum rope guide assembly and a reciprocating guide assembly according to the present application;

[0034] Figure 5 Figure 2 is a schematic view of a structure of a crane drum reciprocating guide assembly according to the present application;

[0035] Figure 6 Figure 3 is a schematic view of a structure of a crane drum support arm and a first sliding block in a disengaged connection state according to the present application;

[0036] Figure 7 Figure 4 is a sectional view of a crane drum support arm according to the present application;

[0037] Figure 8 Figure 5 is a top view of a rope guide assembly in a crane drum and a crane drum main body in a connected state according to the present application;

[0038] Figure 9 Figure 6 is a left view of a rope guide assembly in a crane drum and a crane drum main body in a connected state according to the present application;

[0039] Figure 10 Figure 7 is a rear view of a rope guide assembly in a crane drum and a crane drum main body in a connected state according to the present application.

[0040] Reference signs:

[0041] 1, motor; 2, first pulley; 3, reducer assembly; 4, transmission belt; 5, mounting block;

[0042] 6, rope guide assembly; 601, guide arm; 602, driving arm; 603, trapezoidal block; 604, support arm; 605, first sliding block; 606, multi-stage electric push rod; 607, pulley; 608, gap block; 609, spring; 610, screw; 611, seat plate; 612, limit bar rod;

[0043] 7, reciprocating guide assembly; 701, stand; 702, second sliding block; 703, guide long rod; 704, reciprocating screw rod; 705, screw rod sleeve; 706, support shaft rod; 707, limit head; 708, assembly short rod;

[0044] 8, second pulley; 9, support seat; 10, seat frame; 11, crane drum main body; 12, proximity switch; 13, arc-shaped slot; 14, annular slot; 15, strip-shaped slot. DETAILED DESCRIPTION

[0045] The technical solution in the embodiments of the present application is to solve the problems in the above background art, and the general idea is as follows: EMBODIMENT

[0046] The embodiment introduces a specific structure of a crane winding drum, and specifically refers to the specific structure shown in Figure 1 、 Figure 2 、 Figures 4 to 9 , which comprises a crane winding drum body 11, a reciprocating guide assembly 7 arranged on the top of the crane winding drum body 11, and a rope guide assembly 6 arranged on one side of the crane winding drum body 11. The two ends of the crane winding drum body 11 are respectively provided with a reducer assembly 3 and a support seat 9. The bottom of one end of the reducer assembly 3 is provided with a motor 1 parallel to the axis of the crane winding drum body 11.

[0047] The reciprocating guide assembly 7 comprises a reciprocating screw rod 704, both ends of which are integrally formed with a support shaft 706. The outside of the reciprocating screw rod 704 is sleeved with a screw rod sleeve 705. The inside of the screw rod sleeve 705 is assembled and connected with a limiting head 707 extending into the channel of the reciprocating screw rod 704. The bottom of the screw rod sleeve 705 is assembled and connected with a second sliding block 702. The inside of both ends of the second sliding block 702 is provided with a guide long rod 703 parallel to the reciprocating screw rod 704.

[0048] The rope guide assembly 6 comprises two guide arms 601, one end of which is integrally formed with a same trapezoidal block 603. Two pulleys 607 are arranged between the ends of the two guide arms 601 away from the trapezoidal block 603. The surfaces of the two pulleys 607 are both provided with an annular groove 14. The outside of the two guide arms 601 is provided with a same support arm 604. The end of the support arm 604 away from the trapezoidal block 603 is assembled and connected with two first sliding blocks 605. The bottoms of both ends of the first sliding blocks 605 are buckled on the top of the corresponding guide long rod 703 through the arc-shaped slot 13. The outside surface of the support arm 604 is integrally formed with a seat plate 611. The top of the two guide arms 601 is slidingly connected with a driving arm 602. One end of the driving arm 602 is a right trapezoid, which is adaptively connected between the bottom surfaces of the trapezoidal block 603. The end of the driving arm 602 away from the trapezoidal block 603 is assembled and connected with a multi-stage electric push rod 606 between the surface of the seat plate 611.

[0049] Two first sliding blocks 605 are respectively located on both sides of the second sliding block 702, the interiors of the two second sliding blocks 702 and the first sliding block 605 pass through the two assembly short rods 708, and the two ends of the assembly short rod 708 are connected with the nuts to fix the second sliding block 702 and the first sliding block 605, the outer part of one end of the two support shafts 706 is provided with a vertical seat 701, the bottom of one vertical seat 701 is assembled and fixedly connected with the seat frame 10, the two guide long rods 703 are symmetrically arranged on both sides of the bottom of the reciprocating lead screw 704, and the two ends are respectively assembled and fixed with the two vertical seats 701, the other vertical seat 701 is assembled to the top of the speed reducer assembly 3, and the seat frame 10 is assembled to the top of the support seat 9, when the reciprocating lead screw 704 is controlled to rotate in the interiors of the two vertical seats 701 (in the rotating state of the reciprocating lead screw 704), the second sliding block 702 and the first sliding block 605 can be driven by the lead screw sleeve 705 to reciprocate along the axis direction of the reciprocating lead screw 704 by means of the cooperation of the limiting head 707 and the surface groove, and the sliding of the second sliding block 702 on the outer part of the two guide long rods 703;

[0050] Meanwhile, since one end of the support arm 604 is assembled and fixed with one end of the two first sliding blocks 605, when the rotating reciprocating lead screw 704 drives the lead screw sleeve 705 to move along the axis direction thereof, the rope guide assembly 6 connected with the second sliding block 702 can move along the axis direction of the crane drum body 11, so that the rope guide assembly 6 reciprocally guides the rope to wind to the outside of the crane drum body 11 on one side of the crane drum body 11, changes the position of the rope passing between the two pulleys 607 and winding on the surface of the crane drum body 11, and realizes the winding of the rope to the outside of the crane drum body 11 by turns;

[0051] In addition, the vertical projection of the joint points of the annular grooves 14 on the two pulleys 607 into the plane is circular, which is beneficial to the rope passing between the two pulleys 607 in a vertical state;

[0052] Secondly, the inner angle of the support arm 604 is one hundred and thirty-five degrees, the support arm 604 is divided into a horizontal section and an inclined section, one end of the horizontal section is assembled and fixed with one end of the two first sliding blocks 605, and the inclined section is connected with the two guide arms 601 at the bottom of the trapezoidal block 603, the guide arm 601 and the support arm 604 are kept in a vertical state, and the included angle between the two guide arms 601 and the horizontal plane is forty-five degrees, the distance between the inner side surface of the support arm 604 and the side surface of the crane drum body 11 close to the axis of the crane drum body 11 is the same as the distance between the guide arm 601 and the axis of the crane drum body 11, so that the maximum gap between the support arm 604 and the surface of the crane drum body 11 and between the guide arm 601 and the surface of the crane drum body 11 can be left on the basis of keeping the maximum number of layers wound on the outside of the crane drum body 11;

[0053] Further, the driving arm 602 is controlled by the multi-stage electric push rod 606 to move between the two guide arms 601 to one side of the reciprocating guide assembly 7. The driving arm 602 is provided with a trapezoidal slope at one end, and the trapezoidal block 603 is provided with a slope at the bottom. The trapezoidal block 603 is pushed to move away from the inclined section of the supporting arm 604, and the two guide arms 601 are pulled to slide inside the inclined section of the supporting arm 604, so that the guide arms 601 carry the two pulleys 607 away, facilitating the crane drum body 11 to wind the rope to the next layer (as shown in Figure 9

[0054] Further, in order to make the bottom surface of the driving arm 602 always fit the outer surface of the supporting arm 604, as shown in Figure 7 and Figure 9 a strip-shaped slot 15 is formed in the bottom of the driving arm 602, and a limiting strip 612 is integrally formed on the outer inclined surface of the supporting arm 604. The driving arm 602 is slidably connected outside the limiting strip 612 through the strip-shaped slot 15, so as to limit the surface of the driving arm 602 from being disconnected with the surface of the supporting arm 604;

[0055] In some examples, one end of the rotating shaft of the motor 1 is in gear transmission connection with the gear assembly inside the speed reducer assembly 3, and the rotating shaft of the motor 1 passes out from the inside of the speed reducer assembly 3. The first pulley 2 is assembled and connected at the part of the rotating shaft of the motor 1 passing out from the speed reducer assembly 3. One end of a supporting shaft 706 is integrally formed with an extension shaft, and the second pulley 8 is pivotally connected to the outside of the extension shaft. The first pulley 2 and the second pulley 8 are connected by the transmission belt 4 outside them.

[0056] When the motor 1 works to control the gear assembly inside the speed reducer assembly 3 through the rotating shaft to make the crane drum body 11 rotate between the supporting seat 9 and the speed reducer assembly 3, the rotating shaft of the motor 1 can be used to control the rotation of the first pulley 2. The first pulley 2 drives the extension shaft through the transmission belt 4 connected between the first pulley 2 and the second pulley 8, so that the supporting shaft 706 drives the reciprocating screw rod 704 to rotate. The same motor 1 can provide power for the rotation of the crane drum body 11 and the reciprocating screw rod 704 at the same time, which is beneficial to keep the crane drum body 11 and the reciprocating screw rod 704 in a synchronous rotating state.

[0057] Secondly, the outer sides of the second pulley 8 and the first pulley 2 are processed into gear type, and the inner side of the transmission belt 4 is processed with a rack that engages with the second pulley 8 and the first pulley 2, which is beneficial to prevent the transmission belt 4 from slipping when connected between the second pulley 8 and the first pulley 2.

[0058] ​Further, the exterior of the extension shaft and the exterior of the rotating shaft of the motor 1 from the part of the reducer assembly 3 inside the support seat 9 are equipped with mutually meshing gears, and the transmission efficiency can be ensured through the mutual meshing of the gears (but the distance between the two needs to be considered);

[0059] In some examples, a spacer block 608 is assembled and connected between the middle parts of the two guide arms 601, a spring 609 is arranged between the top of the spacer block 608 and the bottom of one end of the support arm 604, and the top and bottom of the spring 609 are welded and connected with screws 610;

[0060] Among them, one screw 610 is threadedly connected to the inside of the support arm 604, and the other screw 610 is threadedly connected to the inside of the spacer block 608, and the spring 609 is supported between the surfaces of the spacer block 608 and the support arm 604, so that the two guide arms 601 can be pulled by the spacer block 608 to make the trapezoidal block 603 close to the driving arm 602, preventing the rope from passing between the two pulleys 607 and driving the guide arm 601 to slide inside the inclined section of the support arm 604.

[0061] The above design first drives the gear assembly inside the reducer assembly 3 by the motor 1 on one hand to make the crane drum body 11 rotate between the support seat 9 and the reducer assembly 3, and the rope on the crane drum body 11 can be retracted by the rotating crane drum body 11, on the other hand, the rotating shaft of the motor 1 controls the rotation of the first pulley 2, and the extension shaft is driven by the transmission belt 4 connected between the first pulley 2 and the second pulley 8, so that the support shaft 706 drives the reciprocating screw rod 704 to rotate, which is convenient for providing power for the rotation of the crane drum body 11 and the reciprocating screw rod 704 at the same time by the same motor 1, and is beneficial to keep the crane drum body 11 and the reciprocating screw rod 704 in a synchronous rotating state;

[0062] Then, when the reciprocating screw rod 704 is in a rotating state inside the two stands 701, the cooperation of the limiting head 707 with the surface groove, and the sliding of the second sliding block 702 outside the two guide rods 703, can make the screw rod sleeve 705 drive the second sliding block 702 and the first sliding block 605 to reciprocate along the axis direction of the reciprocating screw rod 704;

[0063] At the same time, because one end of the support arm 604 is fixedly assembled with one end of the two first sliding blocks 605, in the process of the rotating reciprocating screw rod 704 driving the screw rod sleeve 705 to move along its axis direction, the support arm 604 fixedly assembled with the second sliding block 702 drives the trapezoidal block 603 and the guide arm 601 at one end to move along the axis direction of the crane drum body 11, so that the two pulleys 607 between the two guide arms 601 drive the crane drum body 11 passing between them to wind around the outside of the crane drum body 11 turn by turn;

[0064] In addition, when the reciprocating screw 704 rotates to cause the screw assembly 705 to move from one end to the other and back, the multi-stage electric push rod 606 retracts one level (based on the step-by-step contraction and extension of the multi-stage electric push rod 606) to control the driving arm 602 to move toward one side of the reciprocating guide assembly 7 between the two guide arms 601. With the help of the inclined surface of the right-angled trapezoid at one end of the driving arm 602 and the inclined surface at the bottom of the trapezoidal block 603, the trapezoidal block 603 is pushed to move in the direction away from the inclined section of the support arm 604, pulling the two guide arms 601 to slide inside one end of the support arm 604, so that the guide arm 601 carries the two pulleys 607 away, making it easier to guide the crane drum body 11 to reel in the rope to the next layer and keep it wound around the outside of the crane drum body 11 in circles. Example

[0065] Based on Example 1, this example introduces the related structures of the reciprocating guide assembly 7 and the rope guide assembly 6. Figures 1 to 3 、 Figure 10 As shown, one end of the driving arm 602 is in a right-angled trapezoidal shape and is adapted to be connected between the bottom surfaces of the trapezoidal block 603. A multi-stage electric push rod 606 is assembled and connected between the end of the driving arm 602 away from the trapezoidal block 603 and the surface of the base plate 611.

[0066] The bottom of the two supporting shafts 706 is provided with a mounting block 5, and the interior of the mounting block 5 is assembled and connected with a proximity switch 12;

[0067] The multi-stage electric push rod 606 is typically composed of multiple telescopic guide rods or sliders of varying lengths. The motor drives the reducer, which then transmits power step by step through a screw or gear set. For example, in a three-stage structure, the first fixed stage contains core components such as the motor and controller, while the second and third stages extend in stages via ropes or threaded connections. When the push rod reaches the set travel distance, a limit switch cuts off the power supply and stops the movement.

[0068] Secondly, the two proximity switches 12 are arranged facing each other. When the second sliding block 702 carries the two first sliding blocks 605 and moves between the two proximity switches 12, the processor monitors the position of the first sliding block 605 with the help of the two proximity switches 12 to control the multi-stage electric push rod 606 to extend in multiple sections. When any proximity switch 12 detects that the second sliding block 702 is approaching, the reciprocating screw 704 can be rotated inside the two stands 701. With the help of the cooperation between the limit head 707 and the surface groove, and the second sliding block 702 slides outside the two guide rods 703, the screw rod kit 705 drives the second sliding block 702 and the first sliding block 605 to move back and forth along the direction of the axis of the reciprocating screw 704. The position of the rope guide assembly 6 is judged according to the starting state of the proximity switch 12, which is convenient for controlling the state of the multiple movable ends in the multi-stage electric push rod 606 to extend step by step.

[0069] The above design is achieved by setting two proximity switches 12 in the facing state at the bottom of the two support shafts 706, when the rotating reciprocating screw rod 704 drives the screw sleeve 705 to drive the second sliding block 702 and the first sliding block 605 to reciprocate outside the two guide long rods 703, the position is monitored by the two proximity switches 12, and the multi-stage movable end of the multi-stage electric push rod 606 is gradually retracted into the inside of the fixed end by the starting state of the two proximity switches 12, so as to facilitate the driving arm 602 to pull the trapezoidal block 603, the two guide arms 601 slide inside the support arm 604, and the two pulleys 607 are away from the state of the crane drum body 11, thereby adapting the number of layers of the rope winding to the outside of the crane drum body 11.

[0070] It is worth noting that the linkage control between the multi-stage electric push rod 606 and the two proximity switches 12 can be controlled based on the same processor, or the circuit system can be independently set for the two proximity switches 12, and respectively connected in series with the power supply system on the multi-stage electric push rod 606, when the proximity switch 12 monitors that the first sliding block 605 reaches the target position, the power supply circuit of the multi-stage electric push rod 606 is turned on, so as to achieve the effect that the two proximity switches 12 jointly control the work of one multi-stage electric push rod 606. Here, only part of the control content is exemplified, and the specific control scheme between the two proximity switches 12 and the multi-stage electric push rod 606 is not limited, and any control scheme that can realize the related function can be used for reference and application.

[0071] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limitations of the embodiments. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A crane drum, characterized in that: include: Crane drum body (11); A reciprocating guide assembly (7) disposed on the top of the crane drum body (11); A rope guide assembly (6) is provided on one side of the crane drum body (11); The rope guide assembly (6) includes two guide arms (601), one end of the two guide arms (601) is integrally formed with a same trapezoidal block (603), two pulleys (607) are provided between the ends of the two guide arms (601) away from the trapezoidal block (603), and an annular groove (14) is provided on the surface of the two pulleys (607), the outside of the two guide arms (601) is provided with a same support arm (604), and a driving arm (602) is slidably connected between the tops of the two guide arms (601), and one end of the driving arm (602) is in a right-angled trapezoid shape and is adapted to be connected between the bottom surfaces of the trapezoidal block (603); The guide assembly (7) includes a reciprocating screw (704), the reciprocating screw (704) is sleeved with a screw assembly (705) on the outside, the screw assembly (705) is internally assembled and connected with a limit head (707) extending into the groove of the reciprocating screw (704), the bottom of the screw assembly (705) is assembled and connected with a second sliding block (702), and both ends of the second sliding block (702) are internally provided with a guide long rod (703) parallel to the reciprocating screw (704); A reducer assembly (3) and a support seat (9) are respectively provided at both ends of the crane drum body (11); a motor (1) parallel to the axis of the crane drum body (11) is provided at the bottom of one end of the reducer assembly (3); one end of the motor (1) shaft is connected to the gear transmission inside the reducer assembly (3) and passes through the inside of the reducer assembly (3); a first pulley (2) is assembled and connected to the portion of the motor (1) shaft passing through the reducer assembly (3); Both ends of the reciprocating screw rod (704) are integrally formed with a support shaft rod (706), one end of the support shaft rod (706) is integrally formed with an extension shaft rod, the exterior of the extension shaft rod is pin-connected to a second pulley (8), and the exteriors of the first pulley (2) and the second pulley (8) are commonly connected to a transmission belt (4); The rope passes between the two pulleys (607) in a vertical state, and the connection point of the annular grooves (14) on the two pulleys (607) is vertically projected into a circular shape in a plane. The driving arm (602) cooperates with the bottom of the trapezoidal block (603) to push the trapezoidal block (603) to move away from the support arm (604), so that the guide arm (601) carries the two pulleys (607) to tilt and move away from the crane drum body (11).

2. A crane drum according to claim 1, characterized in that: A stand (701) is provided on the outside of one end of the two support shafts (706), and a seat frame (10) is assembled and connected to the bottom of one of the stands (701); The two guide rods (703) are symmetrically arranged on both sides of the bottom of the reciprocating screw (704), and the two ends are respectively assembled and fixed with the two stands (701), the other stand (701) is assembled to the top of the reducer assembly (3), and the seat frame (10) is assembled to the top of the support seat (9), supporting the rotating reciprocating screw (704) to drive the rope guide assembly (6) connected to the second sliding block (702) to move along the direction of the axis of the crane drum body (11).

3. A crane drum according to claim 1, characterized in that: The outer surface of the support arm (604) is integrally formed with a seat plate (611), and a multi-stage electric push rod (606) is assembled and connected between the end of the drive arm (602) away from the trapezoidal block (603) and the surface of the seat plate (611); The multi-stage electric push rod (606) controls the driving arm (602) to move between the two guide arms (601) toward one side of (7), the guide arm (601) and the support arm (604) are kept in a vertical state, and the angle between the two guide arms (601) and the horizontal plane is forty-five degrees, and the inner surface of the support arm (604) and the side surface of the guide arm (601) close to the crane drum body (11) are at the same distance from the axis of the crane drum body (11).

4. A crane drum according to claim 1, characterized in that: One end of the support arm (604) away from the trapezoidal block (603) is assembled and connected to two first sliding blocks (605), the two first sliding blocks (605) are respectively located on both sides of the second sliding block (702), the two second sliding blocks (702) and the one first sliding block (605) pass through two assembly short rods (708) at the inside, and nuts are connected at both ends of the assembly short rods (708) to fix the second sliding blocks (702) and the first sliding block (605); The reciprocating screw (704) is in a rotating state, and the limit head (707) cooperates with the surface groove, and the second sliding block (702) slides outside the two guide rods (703), so that the screw assembly (705) drives the second sliding block (702) and the first sliding block (605) to move back and forth along the axis of the reciprocating screw (704), and the control support arm (604) drives the two pulleys (607) between the two guide arms (601) at the bottom of the trapezoidal block (603) to move, thereby changing the position of the rope passing between the two pulleys (607) and winding around the surface of the crane drum body (11).

5. The crane drum according to claim 1, characterized in that: A shim block (608) is assembled and connected between the middle parts of the two guide arms (601), a spring (609) is provided between the top of the shim block (608) and the bottom of one end of the support arm (604), and the top and bottom of the spring (609) are both welded and connected with screws (610); One of the screws (610) is threadedly connected to the interior of the support arm (604), and the other screw (610) is threadedly connected to the interior of the shim block (608).

6. A crane drum according to claim 4, characterized in that: The inner angle of the support arm (604) is 135 degrees. The support arm (604) is divided into a horizontal section and an inclined section. A strip groove (15) is provided at the bottom of the driving arm (602). A limiting bar (612) is integrally formed on the outer inclined surface of the support arm (604). The driving arm (602) is slidably connected to the outside of the limiting bar (612) through a bar groove (15), and the bottoms of both ends of the first sliding block (605) are buckled to the top of the guide long rod (703) at the corresponding position through the arc-shaped bar groove (13).

7. A crane drum according to claim 1, characterized in that: The exterior of the second pulley (8) and the first pulley (2) are processed into gear shapes, and the interior of the transmission belt (4) is processed with a rack meshing with the second pulley (8) and the first pulley (2).

8. The crane drum according to claim 1, characterized in that: The outside of the extension shaft and the outside of the portion of the motor (1) rotating shaft passing through the reducer assembly (3) are equipped with gears that mesh with each other.

9. The crane drum according to claim 1, characterized in that: The bottoms of the two supporting shafts (706) are each provided with a mounting block (5), and a proximity switch (12) is assembled and connected inside the mounting block (5); The two proximity switches (12) are arranged facing each other, the second sliding block (702) carries the two first sliding blocks (605) and moves between the two proximity switches (12), and the processor monitors the position of the second sliding block (702) with the help of the two proximity switches (12) to control the multi-stage extension state of the multi-stage electric push rod (606).

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