A horizontal jib with variable amplitude

Abstract

The utility model discloses a kind of movable arm amplitude horizontal pulley block, including movable pulley, fixed pulley, pulley, rope baffle, fixed pin, anti-rolling plate, rope head plate, guide wheel, reinforcing plate, steel wire rope;Movable pulley is connected by pin shaft and amplitude arm connecting port and does rotary motion, fixed pulley is connected with connecting plate, connecting plate is connected with triangular support arm and does rotary motion, pulley inner hole is all equipped with bearing, and is coaxially fixed in movable pulley and fixed pulley inner crotch by fixed pin series connection, rope baffle is arranged at pulley circumference outside, fixed pin is inserted by the positioning hole reserved in movable pulley and fixed pulley and pulley is fixed, shoulder end is punched and slot is left.This utility model looks on structure, the structure of horizontal pulley block is integrated, and dispersed stress of pulley is made by transverse design, horizontal pulley eliminates the wear and tear between pulley and steel wire rope caused by pulley unable to align operation due to pulley block support shaft non-parallel, and then improve the service life of pulley and steel wire rope.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mechanical equipment with amplitude arm lifting, concretely relates to a dynamic arm amplitude horizontal pulley block. BACKGROUND

[0002] According to the demand of quality safety system, with the development of the times, the mechanical equipment with amplitude arm lifting is developing towards the market demand of larger lifting load and safer quality, but in order to increase the lifting load, the overall quality and volume of the equipment will increase. In order to solve this problem, many manufacturers use truss type amplitude arm, which is dragged by setting steel wire rope on the amplitude arm to operate the amplitude arm for lifting operation and improve the lifting weight, but the truss type amplitude arm is too heavy, and single rope cannot control the lifting, and then a set of labor-saving pulley block is arranged between the amplitude motor and the amplitude arm, and a triangular support arm is arranged to increase the pressure angle between the steel wire rope and the amplitude arm, so as to improve the lifting load, but the emergence of the labor-saving pulley block brings a new problem, the pulley block is directly installed on the truss arm head and the triangular support arm through the pin shaft, the pulley block pin shaft cannot ensure absolute parallel alignment, so that the pulley is not parallel to the operation, the steel wire rope in the winding is rubbed for a long time, the overall pulley block occupies a large space, and the pulley rotation stress is relatively uneven. CONTENT OF THE UTILITY MODEL

[0003] In order to improve the lifting capacity of the equipment, the purpose of the present application is to provide a dynamic arm amplitude horizontal pulley block.

[0004] In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

[0005] A dynamic arm amplitude horizontal pulley block, comprising a movable pulley, a fixed pulley, a pulley, a rope blocking plate, a fixed pin, an anti-rolling plate, a rope head plate, a guide wheel, a reinforcing plate and a steel wire rope;

[0006] The movable pulley is connected with the amplitude arm connection port through the pin shaft and rotates, the fixed pulley is connected with the connecting plate, the connecting plate is connected with the triangular support arm and rotates, bearings are arranged in the inner holes of the pulleys, and the bearings are coaxially connected and fixed in the movable pulley and the fixed pulley through the fixed pins, the rope blocking plate is arranged outside the circumference of the pulley, the fixed pins are inserted into the positioning holes reserved in the movable pulley and the fixed pulley to fix the pulley, the shoulder end is punched and a slot is reserved, the anti-rolling plate is tightly embedded in the slot of the shoulder end, and the anti-rolling plate is fixed on the movable pulley and the fixed pulley, the reinforcing plates of the movable pulley are arranged at the two sides, the reinforcing plate of the fixed pulley is arranged at the middle position, the rope head plate is arranged on one side of the fixed pulley, the guide wheel is arranged on the triangular arm support arm and rotates concentrically, and the steel wire rope is wound in the pulley groove of the movable pulley and the fixed pulley.

[0007] Wherein, when the equipment operates, the center of the fixed pulley and the movable pulley is aligned.

[0008] Wherein, the pulley inner bearing needs to install spacer between.

[0009] Wherein, the fixed pin is inserted into the reserved hole from top to bottom by the weight of the fixed pin itself, and the pin shaft is fixed by using the open pin with a washer, the whole pulley is horizontally placed, and the fixed pin is obliquely placed under force during operation, and the slotted opening at the shoulder end of the fixed pin must be completely embedded with the anti-rolling plate and fixed by bolts.

[0010] Wherein, the reinforcing plate of the movable pulley is arranged at both sides, and the reinforcing plate of the fixed pulley is arranged at the middle position.

[0011] Wherein, the steel wire rope is wound into the movable pulley from the variable amplitude motor, and then wound into the fixed pulley in turn, and finally fixed on the rope head plate through the unloading buckle.

[0012] Wherein, the two pulleys are a group and divided into N groups, N is an even number, the fixed pulley and the movable pulley are internally provided with 2N-1 pulleys, the pulleys are divided into two layers, and are fixed by a plurality of fixed pins.

[0013] Wherein, the rope head plate is arranged on one side of the fixed pulley, the steel wire rope is wound into the movable pulley from the guide wheel, the first group of pulleys starting from the movable pulley is arranged on the same side with the rope head plate to ensure that the steel wire rope is wound from the upper pulley to the rear in turn, and then wound from the lower pulley to the rear in turn, and finally fixed on the rope head plate.

[0014] Wherein, the guide wheel and the power motor are vertically arranged.

[0015] Wherein, the connecting plate is connected in series between the triangular arm and the fixed pulley, and the three are connected only by the pin shaft to ensure the linkage connection.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model discloses a horizontal pulley block, which is characterized by the following: the horizontal pulley block comprises a fixed pulley, a movable pulley, a connecting plate, a guide wheel, a variable amplitude motor, a rope head plate and a plurality of fixed pins. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is shown that the movable arm variable amplitude horizontal pulley block structure schematic diagram provided by the utility model embodiment.

[0019] Figure 2 As shown is a first schematic view of the dynamic arm luffing horizontal pulley block mounting structure provided by the embodiment of the utility model.

[0020] Figure 3 As shown is a second schematic view of the dynamic arm luffing horizontal pulley block mounting structure provided by the embodiment of the utility model.

[0021] In the figure, the dynamic pulley 1, the fixed pulley 2, the pulley 3, the rope blocking plate 4, the fixed pin 5, the anti-rolling plate 6, the rope head plate 7, the guide wheel 8, the reinforcing plate 9, the steel wire rope 10. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] In the description of the patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, set, or can be detachably connected, set, or integrally connected, set, which can mean direct connection or indirect connection. For those skilled in the art, the specific meaning of the above terms in the patent can be understood according to the specific circumstances.

[0025] As Figures 1-3 As shown, the embodiment structure provided by the utility model.

[0026] Specific implementation method one: combined with Figure 1 And Figure 2The embodiment is described, the dynamic arm amplitude variable horizontal pulley block of the embodiment includes a dynamic pulley 1, a fixed pulley 2, a pulley 3, a rope blocking plate 4, a fixed pin 5, an anti-rolling plate 6, a rope head plate 7, a guide wheel 8, a reinforcing plate 9, and a steel wire rope 10.

[0027] The dynamic pulley 1 is connected with the amplitude variable arm to rotate, the fixed pulley 2 is connected with the triangular support arm through a connecting plate to rotate, bearings are arranged in the inner holes of the pulley 3, and the pulley 3 is coaxially connected in series with the dynamic pulley 1 and the fixed pulley 2 through the fixed pin 5 and is fixed in the inner crotch of the dynamic pulley 1 and the fixed pulley 2, the rope blocking plate 4 is arranged outside the circumference of the pulley 3, the fixed pin 5 is inserted into the fixed pulley 2 to fix the pulley 3, the shoulder end is punched and a notch is left, the anti-rolling plate 6 is inlayed and tightly attached to the shoulder end notch, and is fixed on the dynamic pulley 1 and the fixed pulley 2, respectively, the reinforcing plate 9 of the dynamic pulley 1 is arranged at two side positions, the reinforcing plate 9 of the fixed pulley is arranged at a middle position, the rope head plate 7 is arranged on one side of the fixed pulley 2, the guide wheel 8 is arranged to rotate concentrically on the triangular arm support, and the steel wire rope 10 is wound in the groove of the pulley 3 on the dynamic pulley 1 and the fixed pulley 2.

[0028] Specific implementation method two: in combination with Figure 1 and Figure 2 The embodiment is described, the dynamic pulley 1 is connected with the amplitude variable arm to rotate, the fixed pulley 2 is connected with the triangular support arm through a connecting plate to rotate, and the center of the fixed pulley 2 and the dynamic pulley 1 is guaranteed to be aligned when the device is running.

[0029] Specific implementation method three: in combination with Figure 1 and Figure 2 The embodiment is described, bearings are arranged in the inner holes of the pulley 3, and the pulley 3 is coaxially connected in series with the dynamic pulley 1 and the fixed pulley 2 through the fixed pin 5 and is fixed in the inner crotch of the dynamic pulley 1 and the fixed pulley 2, a spacer sleeve needs to be installed between the bearings in the pulley 3 to avoid mutual friction between the pulleys due to gravity.

[0030] Specific implementation method four: in combination with Figure 1 and Figure 2 The embodiment is described, the rope blocking plate 4 is arranged outside the circumference of the pulley 3, in addition to preventing the steel wire rope from derailing when the steel wire rope 10 is running, the rope blocking plate 4 also needs to be made of thick plates and used as a load-bearing structural member of the pulley block to improve the overall strength of the pulley block.

[0031] Specific implementation method five: in combination with Figure 1 and Figure 2The embodiment is described, the fixed pin 5 of the embodiment is inserted into the positioning hole reserved by the movable pulley 1 and the fixed pulley 2 to fix the pulley 3, the shoulder end is punched and a notch is left, the anti-rolling plate 6 is inlaid and tightly attached to the shoulder end notch, and is respectively fixed on the movable pulley 1 and the fixed pulley 2, the fixed pin 5 is inserted into the reserved hole from top to bottom by the weight of the fixed pin 5 itself, the pin shaft can be directly fixed by using the split pin with a washer, and the fixed pin 5 cannot be separated, because the whole pulley 3 is horizontally placed, the fixed pin 5 is obliquely placed under force during operation, the pulley 3 is extremely easy to drive the fixed pin 5 to rotate and generate friction damage during the rotating operation, and the safety hazard is increased, therefore, the fixed pin 5 shoulder end notch and the anti-rolling plate 6 must be completely inlaid and bolted to prevent the fixed pin 5 from rotating.

[0032] Specific embodiment six: in combination with Figure 1 and Figure 2 The embodiment is described, the reinforcing plate 9 of the movable pulley 1 is arranged at two side positions, and the reinforcing plate 9 of the fixed pulley is arranged at a middle position, when the reinforcing plate 9 of the fixed pulley 2 and the movable pulley 1 is simultaneously arranged at the outer side position, the pulley 3 at the middle position is greatly subjected to tensile force and is deformed along the force direction, therefore, the reinforcing plate 9 needs to be arranged at a staggered position, for example, the reinforcing plate 9 of the movable pulley 2 is arranged at the position close to the middle pulley 3, and the reinforcing plate 9 of the movable pulley 1 is arranged at the position close to the outer side of the pulley 3, so that the tensile force is dispersed, and the reinforcing plate 9 is only subjected to the stress generated during the operation of the pulley block.

[0033] Specific embodiment seven: in combination with Figure 1 and Figure 2 The embodiment is described, the reinforcing plate 9 of the movable pulley 1 is arranged at two side positions, and the reinforcing plate 9 of the fixed pulley is arranged at a middle position, when the reinforcing plate 9 of the fixed pulley 2 and the movable pulley 1 is simultaneously arranged at the outer side position, the pulley 3 at the middle position is greatly subjected to tensile force and is deformed along the force direction, therefore, the reinforcing plate 9 needs to be arranged at a staggered position, for example, the reinforcing plate 9 of the movable pulley 2 is arranged at the position close to the middle pulley 3, and the reinforcing plate 9 of the movable pulley 1 is arranged at the position close to the outer side of the pulley 3, so that the tensile force is dispersed, and the reinforcing plate 9 is only subjected to the stress generated during the operation of the pulley block.

[0034] Specific embodiment eight: in combination with Figure 1 and Figure 2 The embodiment is described, the reinforcing plate 9 of the movable pulley 1 is arranged at two side positions, and the reinforcing plate 9 of the fixed pulley is arranged at a middle position, when the reinforcing plate 9 of the fixed pulley 2 and the movable pulley 1 is simultaneously arranged at the outer side position, the pulley 3 at the middle position is greatly subjected to tensile force and is deformed along the force direction, therefore, the reinforcing plate 9 needs to be arranged at a staggered position, for example, the reinforcing plate 9 of the movable pulley 2 is arranged at the position close to the middle pulley 3, and the reinforcing plate 9 of the movable pulley 1 is arranged at the position close to the outer side of the pulley 3, so that the tensile force is dispersed, and the reinforcing plate 9 is only subjected to the stress generated during the operation of the pulley block.

[0035] Specific embodiment nine: in combination with Figure 1 andFigure 2 The embodiment is further limited to the specific embodiment seven, two pulleys 3 are divided into N groups, N is an even number, the number of pulleys 2N-1 is arranged inside the fixed pulley 2 and the movable pulley 1, the pulleys are divided into two layers to prevent the steel wire rope 10 from being worn by mutual friction during operation, the pulleys 3 are divided into upper and lower two layers and are fixed by a plurality of fixed pins to reduce stress concentration.

[0036] Specific embodiment: in combination Figure 1 and Figure 2 The embodiment is further limited to the specific embodiment eight, the rope head plate 7 is arranged on one side of the fixed pulley 2, the steel wire rope 10 is wound into the first group of pulleys 3 starting from the movable pulley 1 through the guide wheel 8, and the first group of pulleys 3 is arranged on the same side as the rope head plate 7 to ensure that the steel wire rope 10 is wound from the upper pulleys 3 to the rear in turn, wound from the lower pulleys 3 in turn, and finally fixed on the rope head plate 7.

[0037] Specific embodiment eleven: in combination Figure 1 and Figure 2 The embodiment is further limited to the specific embodiment eight, the rope head plate 7 is arranged on the fixed pulley 2, and the guide wheel 8 is arranged on the triangular support connecting shaft to rotate. The guide wheel 8 and the power motor are arranged in vertical position to prevent unnecessary friction loss caused by mutual friction between the steel wire rope 10 and the guide wheel 8 due to misalignment rotation.

[0038] In addition, one end of the movable pulley 1 is connected to the lengthened amplitude arm to rotate, and the length of the steel wire rope 10 is insufficient after the lengthening of the amplitude arm, so the movable pulley 1 cannot be directly connected and needs to be connected in series with the lengthened steel wire cable.

[0039] In addition, bearings are arranged in the inner holes of the pulleys 3, and the pulleys 3 are coaxially connected in series in the inner crotch of the movable pulley 1 and the fixed pulley 2 by the fixed pins 5, two pulleys 3 are divided into N groups, N is an even number, the number of pulleys 2N-1 is arranged inside the fixed pulley 2 and the movable pulley 1, the pulleys are divided into two layers to prevent the steel wire rope 10 from being worn by mutual friction during operation, the pulleys 3 are divided into upper and lower two layers and are fixed by a plurality of fixed pins to reduce stress concentration.

[0040] In addition, the rope blocking plate 4 is arranged outside the circumference of the pulley 3, the rope blocking plate 4 is made of thick plate as a structure plate, and does not affect the movement trajectory of the steel wire rope 10.

[0041] In addition, the anti-rolling plate 6 is embedded and tightly fitted with the shoulder end slot, and is fixed on the movable pulley 1 and the fixed pulley 2, respectively. The head end of the fixed pin 5 also needs to be provided with a split pin hole, a gasket is installed at the head end and is fixed with a split pin, and the anti-rolling plate 6 is provided with a long hole which is tightly fitted with the shoulder end slot of the fixed pin 5 and is fixed by a bolt.

[0042] In addition, the structural plates of the fixed pulley 2 and the movable pulley 1 are relatively parallel along the cross coordinate plane, and the reinforcing plate 9 needs to be misaligned and parallel when the movable pulley 2 and the fixed pulley 1 are relatively positioned, and only used as a structural plate in the pulley block.

[0043] In addition, the guide wheel 8 is vertically positioned above the luffing motor, and the rope blocking rod is arranged on the outer side of the circumference of the guide wheel 8.

[0044] In addition, the rope head plate 7 is arranged on one side of the fixed pulley 2, one end of the steel wire rope 10 is fixed on the luffing motor, the other end is wound between the movable pulley 1 and the fixed pulley 2, and finally fixed on the rope head plate 7 through the release buckle. The steel wire rope 10 is guided into the pulley block from the luffing motor, and then wound into and out of the first side pulley 3 of the movable pulley 1, and then wound into the fixed pulley 2 from the pulley 3 on the same side of the fixed pulley 2, and so on, and finally fixed on the rope head plate 7. The first winding pulley 3 of the steel wire rope 10 into the pulley block is on the same side of the rope head plate 7.

[0045] In addition, the first winding pulley 3 of the steel wire rope 10 into the pulley block is arranged on the same side of the rope head plate 7, and the pulley 3 is arranged in the pulley block in two groups, which are arranged in two layers, the steel wire rope 10 is wound into and out of the upper layer pulley and then wound back, and finally fixed on the rope head plate 7.

[0046] In addition, the movable pulley 1 and the fixed pulley 2 are reinforced by the reinforcing ring at the position of the shaft hole matching.

[0047] Working principle

[0048] The pulley block is arranged between the triangular support shaft and the luffing arm, and the luffing arm is lifted by winding and unwinding the steel wire rope 10, one end of the steel wire rope 10 is controlled by the luffing motor, the other end is wound between the fixed pulley 2 and the movable pulley 1, and finally fixed on the rope head plate 7 of the fixed pulley 2, the steel wire rope 10 is guided from the guide wheel, then wound into and out of the upper pulley 3 on the side of the rope head plate close to the fixed pulley 2 from the movable pulley 1, then wound into and out of the first single layer pulley 4 on the same end of the fixed pulley 2 and the movable pulley 1, and then wound back, and finally wound back to the rope head plate 7, and fixed on the rope head plate 7 through the release buckle, so the steel wire rope 10 forms a closed loop in the pulley block. In use, the luffing motor rotates to contract or release the steel wire rope 10, thereby tightening and loosening the steel wire rope 10 on the fixed pulley 2 and the movable pulley 1, and driving the luffing arm to lift.

[0049] In the pulley block, the length of the steel wire rope 10 is limited, and beyond this length, the movable pulley 1 cannot be directly connected to the luffing arm. A steel wire cable can be used in series between the movable pulley 1 and the luffing arm, and the steel wire cable is only subjected to tensile strength and is not subjected to rotational bending damage stress. By connecting the movable pulley and the luffing arm in series through the steel wire cable, the tensile length of the steel wire rope 10 between the movable pulley 1 and the fixed pulley 2 is reduced, the overall weight is reduced, the installation of the integral pulley block is convenient and does not require scattered installation on the whole machine equipment, the pulley block can be directly connected in series through the steel wire rope after the integral pulley block is installed, and a connecting plate is arranged between the fixed pulley and the triangular support arm, so that the fixed pulley 2 is away from the inner angle point between the triangular support arm and the steel wire rope 10, the luffing angle of the luffing arm is increased, the lifting load capacity is improved, and the stability of the pulley block is not affected.

[0050] The application designs an integral movable arm luffing horizontal pulley block to improve the problem, thereby reducing the weight of the whole machine equipment, and the installation is also simpler. The utility model is suitable for the field of mechanical equipment with luffing arm lifting.

[0051] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A luffing horizontal pulley block, characterized by: It comprises a movable pulley (1), a fixed pulley (2), pulleys (3), a rope blocking plate (4), a fixing pin (5), an anti-rolling plate (6), a rope head plate (7), a guide wheel (8), a reinforcing plate (9), and a steel wire rope (10). The movable pulley (1) is connected to the amplitude arm connection port through a pin shaft and rotates, the fixed pulley (2) is connected to a connecting plate, the connecting plate is connected to a triangular support arm and rotates, the inner holes of the pulleys (3) are provided with bearings, and the pulleys (3) are coaxially connected and fixed in the inner crotch of the movable pulley (1) and the fixed pulley (2) through the fixing pin (5), the rope blocking plate (4) is arranged outside the circumference of the pulley (3), the fixing pin (5) is inserted into the reserved positioning hole of the movable pulley (1) and the fixed pulley (2) to fix the pulley (3), the shoulder end is punched and a slot is left, the anti-rolling plate (6) is tightly embedded in the slot of the shoulder end, and the anti-rolling plate (6) is fixed on the movable pulley (1) and the fixed pulley (2), respectively, the reinforcing plate (9) of the movable pulley (1) is arranged at the two side positions, and the reinforcing plate (9) of the fixed pulley (2) is arranged at the middle position, the rope head plate (7) is arranged on one side of the fixed pulley (2), the guide wheel (8) is arranged on the triangular arm support arm and rotates concentrically, and the steel wire rope (10) is wound in the groove of the pulley (3) on the movable pulley (1) and the fixed pulley (2).

2. A luffing horizontal pulley block according to claim 1, characterized in that: When the device is running, the centers of the fixed pulley (2) and the movable pulley (1) are aligned.

3. The horizontal pulley block of claim 1, wherein: A spacer sleeve needs to be installed between the inner bearings of the pulley (3).

4. The luffing horizontal pulley block of claim 1, wherein: The fixing pin (5) is inserted into the reserved hole from top to bottom by its own weight, and the pin shaft is fixed by directly using a split pin with a washer, the whole pulley (3) is placed horizontally, the fixing pin (5) is inclined and stressed during operation, and the slot at the shoulder end of the fixing pin (5) must be completely embedded with the anti-rolling plate (6) and fixed by a bolt.

5. The luffing horizontal pulley block of claim 1, wherein: The reinforcing plate (9) of the movable pulley (1) is arranged at the two side positions, and the reinforcing plate (9) of the fixed pulley is arranged at the middle position.

6. The luffing horizontal pulley block of claim 1, wherein: The steel wire rope (10) is wound into the guide wheel (8) from the amplitude motor, is wound into the movable pulley (1), and is sequentially wound back and forth through the fixed pulley (2), and finally is fixed on the rope head plate (7) through a shackle.

7. The luffing horizontal pulley block of claim 1, wherein: Two pulleys (3) form a group, N groups, N is an even number, the fixed pulley (2) and the movable pulley (1) are provided with 2N-1 pulleys inside, the pulleys (3) are divided into two layers, and are fixed by a plurality of fixing pins.

8. A luffing horizontal pulley block according to claim 7, characterized in that: The rope head plate (7) is arranged on one side of the fixed pulley (2), the steel wire rope (10) is wound into the movable pulley (1) through the guide wheel (8), the first group of pulleys (3) at the beginning of the steel wire rope (10) is arranged on the same side with the rope head plate (7), so that the steel wire rope (10) is sequentially wound back from the upper pulley (3) and is sequentially wound back from the lower pulley (3), and finally is fixed on the rope head plate (7).

9. The luffing horizontal pulley block according to claim 7, characterized in that: The guide wheel (8) and the power motor are vertically arranged.

10. The luffing horizontal pulley block of claim 1, wherein: The connecting plate is connected between the triangular arm and the fixed pulley (2), and the three are only connected through a pin shaft, so that the linkage connection is ensured.

Images