Rewinder

Abstract

The hoist (1) comprises a load chain sheave (6) and a drive shaft (4) which drives the load chain sheave (6) via a transmission mechanism (5). The drive of the hoist (1) is effected via a motor, in particular an electric motor (10). The motor shaft (11) and the drive shaft (4) are connected via a brake clutch system (12). The brake clutch system (12) comprises a clutch member (13) which can be connected to the motor shaft (11) and a brake boss (15) which is rotatably arranged on a brake thread (14) of the drive shaft (4). The clutch member (13) comprises a driving body (20). The brake boss (15) comprises a column body (21) which protrudes axially towards the clutch member (13). Between the clutch member (13) and the brake boss (15) a vane disc (22) is arranged, the vane disc (22) comprising vane bodies (23). The vane disc (22) is attached to the connecting portion (24) of the drive shaft (4) so ​​as to be non-rotatable relative to the drive shaft (4). On the transmission mechanism side of the brake boss (15), a pressure disc (28) is attached to the drive shaft (4) so ​​as to be non-rotatable relative to the drive shaft (4). Between the brake boss (15) and the pressure disc (28), two friction discs (33, 34) and a brake disc (35) fitted between the friction discs (33, 34) are arranged. The brake disc (35) is supported in the housing (3) so as to be non-rotatable relative to the drive shaft (4).

Description

[Technical field]

[0001] The invention relates to a winch according to the features of the preamble of claim 1 .

[0002] Generally, hoists use steel round-link chains as a lifting or towing means and are used for lifting, lowering and towing loads. The present invention relates to a motor-driven hoist, preferably using an electric motor, particularly a secondary battery-operated electric motor, as the drive. The drive may also be a compressed air motor or a hydraulic motor.

[0003] The hoist comprises a support hook as an upper mounting element and a load hook as a lower slinging element. The upper mounting element and the lower slinging element are indirectly connected to one another via a housing. The slinging elements are connected to a traction means drive mechanism via a load chain as traction means, the traction means drive mechanism being present in the housing of the hoist. In the case of an electric hoist, the traction means drive mechanism is rotated by an electric motor. For this purpose, the electric motor cooperates with a drive shaft of the hoist, which drives a load chain sheave via a transmission. [Background technology]

[0004] One electric hoist that counts in the prior art is from DE 10 200 033 336. An electric hoist is also known from DE 10 200 033 336.

[0005] A load-holding brake-clutch system for a powered hoist, in particular an electric chain hoist, is disclosed in the patent document 3. This brake-clutch system has a driving clutch which connects the motor shaft at its end face to a slip clutch, which is configured as a double-disc clutch. A clutch-driving disc is installed between both clutch discs.

[0006] Hoists with load brakes which are counted in the prior art are further described in DE 10 200 43 511 and DE 10 200 53 511. Load brakes in their general construction form are well known. As a rule, they work in the lifting and lowering direction with a locking mechanism. Such load brakes are unsuitable for relatively high rotational speeds. Furthermore, the thermal dissipation of the heat generated in the load brake by friction processes is insufficient.

[0007] From US Pat. No. 5,399,543 a winch is known in which braking is achieved by cam actuation. For braking or holding in a stationary state, the cam actuation frictionally locks the drive shaft. Between the drive shaft and the cable drum, a reduction mechanism is provided. A brake mechanism is used to lock the drive shaft to the cable drum, whereby the rotational movement of the shaft and the winch is stopped or braked. The brake or brake mechanism is present in the cable drum, and the power is also effected via the cable drum. Braking is effected on a stationary drive shaft.

[0008] Equivalent in function are the winch braking devices disclosed in US Pat. No. 5,393,323 and US Pat. No. 5,493,636.

[0009] From DE 10 200 03 133 A1 a winch with an axially oriented brake is known, which is a mechanically acting brake with a locking hook.

[0010] US Pat. No. 5,399,633 discloses a torque limiting cone-shaped brake assembly for a motor winch.

[0011] Further documents which may be counted as part of the technical background are US Pat. No. 5,399,623, US Pat. No. 5,499,633, US Pat. No. 5,599,623 and US Pat. No. 5,599,633. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] German Patent No. 3330539 [Patent Document 2] German Patent Invention No. 102006001154 [Patent Document 3] German Patent No. 19927847 [Patent Document 4] German Patent No. 19959999 [Patent Document 5] U.S. Patent No. 3,090,601 [Patent Document 6] U.S. Patent No. 5,482,255 [Patent Document 7] China Utility Model No. 201619981 Specification [Patent Document 8] China Utility Model No. 200981801 Specification [Patent Document 9] US Patent Application Publication No. 2019 / 0002254 [Patent Document 10] US Patent Application Publication No. 2016 / 0311668 [Patent Document 11] DE 102017108694 [Patent Document 12] US Patent Application Publication No. 2017 / 0240395 [Patent Document 13] China Utility Model No. 206553130 Summary of the Invention [Problem to be solved by the invention]

[0013] Starting from the prior art, the problem underlying the present invention is to provide a hoist which is improved in terms of operation and safety, in particular a motor-driven hoist which has a functionally improved brake-clutch system. [Means for solving the problem]

[0014] The solution to the above problem lies in the electric hoist according to the invention as defined in claim 1.

[0015] Advantageous configurations and developments of the hoist according to the invention are the subject of the dependent claims.

[0016] The hoist includes a load chain sheave, a drive shaft that drives the load chain sheave via a transmission mechanism, and a motor having a motor shaft. The motor shaft and the drive shaft are connected via a brake clutch system.

[0017] According to the invention, the brake-clutch system comprises a clutch member which can be coupled to the motor shaft and a brake boss which is arranged rotatably on a brake thread of the drive shaft. The clutch member has a driver and the brake boss has a column. Between the clutch member and the brake disc, a vane disc is arranged. The vane disc has vanes which are oriented radially outward and is arranged on the connection part of the drive shaft. The vane disc is arranged on the connection part of the drive shaft in a rotation-resistant manner. In particular, this rotation-resistant arrangement is achieved via a mating toothing between the vane disc and the connection part. On the transmission side of the brake boss, i.e. away from the clutch member, a pressure disc is positioned on the drive shaft in a rotation-resistant manner. Between the brake boss and the pressure disc, two friction discs and a brake disc which is integrated between the friction discs are arranged. The brake disc is supported in a rotation-resistant manner, i.e. in a non-rotatable manner. Effect of the Invention

[0018] The invention provides a motor-driven and thus relatively fast-operating hoist that functions with a purely mechanical brake-clutch system. Preferably, the hoist according to the invention is electrically driven by an electric motor. In this connection, a primary or secondary battery can be used as an energy accumulator. Although the hoist is in particular electrically driven, the drive can also be effected via a compressed air motor or a hydraulic motor.

[0019] The hoist according to the invention is also distinguished by an improved heat dissipation, which is achieved by physical contact between the brake disc and the housing, which improves commercial use, especially in continuous operation and / or when the hoist is subjected to high loads.

[0020] The mechanical brake-clutch system of the hoist according to the invention, in particular the brake arrangement, additionally increases operational safety: in particular in the event of drive failure, the load is reliably held, which is particularly advantageous in electric hoists, in particular those powered by secondary batteries.

[0021] The drivers of the clutch members as well as the posts of the brake boss and the vanes of the vane disc are defined and constructed so as to come into contact and cooperate with one another during operation, i.e. rotation, of the hoist.

[0022] The brake boss is axially displaceable on a threaded portion of the drive shaft having brake threads.

[0023] Preferably, the brake disc is journalled in a non-rotating manner within the housing of the hoist.

[0024] For this purpose, the brake disc has a cavity in which a support provided on the housing engages. According to one advantageous embodiment, the cavity is provided on the outer periphery of the brake disc and the support on the wall of the housing. The brake disc is held in the housing in the form of a plug-in toothing and is oriented in a fixed position so that it cannot rotate relative to the housing. This is a multi-form connection, in which the contact and thus the heat transfer surface between the brake disc and the housing is large.

[0025] The brake disc is rotatably supported on the drive shaft by means of a brake thread. The pressure disc cannot rotate or slide axially relative to the drive shaft. Between the brake hub and the pressure disc, two friction discs are arranged with the brake disc located therebetween.

[0026] The brake hub has, on its side facing the pressure disc, an annular receiving part on which the first friction disc is received, the friction disc being placed on the annular receiving part of the brake hub with a central opening in the centre of the friction disc.

[0027] The pressure disc has a receiving part on the side directed towards the brake hub, on which the second friction disc is arranged, which receiving part is also of tubular or annular construction, and the second friction disc is fitted onto the receiving part with a central opening in the centre of the second friction disc.

[0028] The first and second friction discs are preferably independent components. In principle, the first friction disc can be rigidly connected to the rear surface of the brake boss or form a component of the brake boss. The second friction disc can also be rigidly connected to the pressure disc or form a component of the pressure disc. Between the first and second friction discs, the brake disc is mounted in a housing in a rotationally blocked manner.

[0029] According to one advantageous configuration, the clutch member has a driver which projects axially towards the brake hub, and the brake hub has a column which projects axially towards the clutch member, where projecting axially means that the driver of the clutch member and the column of the brake hub are axially oriented relative to one another in such a way that they come into contact with one another and cooperate during a relative rotational movement.

[0030] The driver of the clutch member and the column of the brake boss are rotatable relative to one another, and during the rotational movement of the clutch member for unloading the load, the driver and the column come into contact with one another.

[0031] Furthermore, the driver of the clutch element and the vane of the vane disk can rotate relative to one another, and during the rotational movement of the clutch element to lift the load, the driver and the vane come into contact with each other at corresponding stop or abutment surfaces.

[0032] During the rotational movement of the clutch member to lift the load, the driver of the clutch member and the column of the brake boss come into contact with each other, so that the driver drives the brake boss which rotates in a loose manner.

[0033] The clutch element has a disk body with a driver. In one advantageous embodiment, the clutch element is part of the output stage of an electric motor, which is a geared motor, which is located upstream of the brake. The driver is formed as an integral part of the disk body and made of the same material. In the axial direction, the driver is oriented in such a way that it meshes with the column of the brake boss and comes into working contact when rotating relative to one another. The clutch element, or the disk body of the clutch element, is part of the driven gear of the planetary gear.

[0034] The brake discs are supported in a rotationally immovable manner in the housing. The housing may be formed from a number of housing parts or housing halves. The housing halves are separably screwed together. The motor housing may be integrated in the transmission housing.

[0035] According to an advantageous embodiment, the brake mechanism of the brake-clutch system has an additional spring element, which is defined and designed to facilitate closing of the brake during low-speed operation. For this purpose, a spring element is provided, which presses the brake disc against the brake hub. The spring element is supported in a housing. By using the spring elasticity to press the brake disc against the brake hub, a minimum friction moment is generated, which is necessary to close the brake or the brake-clutch system, even when the brake is released.

[0036] The spring element is supported in the housing on its side facing away from the brake disc, in particular the end of the spring element facing away from the brake disc being received in a receiving part provided in the housing.

[0037] The invention will now be described in more detail with reference to the drawings. [Brief description of the drawings]

[0038] [Figure 1] FIG. 1 is a perspective view of an electric hoist according to the invention without the outer housing. [Diagram 2] FIG. 2 is a side view of the hoist of FIG. [Diagram 3] 3 is a horizontal cross-sectional view taken along line AA of FIG. 2. [Figure 4] FIG. [Diagram 5] 5 is a vertical cross-section taken along line BB of FIG. 4. [Figure 6] FIG. 2 is an exploded perspective view of components of a hoist according to the present invention. [Figure 7] FIG. 2 is a perspective view of a member or member component of a brake-clutch system of a hoist with the electric motor removed, in a first operating position. [Figure 8] 8 is a view corresponding to FIG. 7 in a second operating position of the brake-clutch system; [Figure 9] 8 is a view corresponding to FIG. 7 in a third operating position of the brake-clutch system; [Figure 10] 8 is a view corresponding to FIG. 7 in a fourth operating position of the brake-clutch system; FIG. [Figure 11] FIG. 4 is a side view of another configuration of a hoist according to the present invention. [Figure 12] FIG. 12 is a cross-sectional view taken along line AA of FIG. [Figure 13] FIG. 13 is an enlarged view of a portion B shown in FIG. [Figure 14]FIG. 2 is an exploded view of the main members or member components of the hoist according to the present invention. [Figure 15] FIG. 2 is a perspective view, partially in section, of a member or member component of a brake-clutch system of a hoist; [Figure 16] FIG. 2 is a perspective view of a member or member component of the hoisting machine as viewed from the transmission mechanism side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] Figures 1 to 5 show a hoisting machine 1 according to the invention. The parts and part components of the hoisting machine 1 can be seen in an exploded view in Figure 6. In particular, the hoisting machine 1 is an electric hoisting machine 1.

[0040] The hoist 1 comprises a support hook 2 as an upper mounting element. A load hook, not shown in the drawings, serves as a lower slinging element. The support hook 2 and the load hook are indirectly connected to one another via a housing 3. The load hook is fastened to one end of a load chain, which is also not shown in Figures 1 to 6 for the sake of clarity.

[0041] The load chain is movable via a traction means drive mechanism which has a drive shaft 4 which drives a load chain sheave 6 via a transmission mechanism 5. Figures 1 to 6 show the hoist 1 without the housing cover of the transmission mechanism 5.

[0042] The load chain extends through and is driven by load chain sheave 6 .

[0043] The drive is effected via an electric motor 10, the motor shaft 11 of which is connected to the drive shaft 4 via a brake-clutch system 12 (see also in particular the exploded view shown in FIG. 6).

[0044] The brake-clutch system 12 includes a clutch member 13 connectable to the motor shaft 11 and a brake boss 15 rotatably disposed on a brake thread 14 of the drive shaft 4 .

[0045] The clutch member 13 has a disk body 16 and a coupling portion 17 which projects from the disk body 16 towards the electric motor 10. A coupling receiving portion 18 having internal teeth 19 is provided in the centre of the coupling portion 17. The clutch member 13 can be placed with the coupling receiving portion 18 on a complementary external toothing of the motor shaft 11.

[0046] The clutch member 13 has a driver 20 which projects axially towards the brake hub 15, and the brake hub 15 has a column 21 which projects axially towards the clutch member 13. Between the clutch member 13 and the brake hub 15 a vane disk 22 is arranged. The vane disk 22 has vanes 23 which are directed radially outwards. The vane disk 22 is arranged on a connecting part 24 of the drive shaft 4 in a rotationally fixed manner. This rotationally fixed arrangement is achieved via a mating toothing between the vane disk 22 and the connecting part 24. The connecting part 24 has an external toothing 25 on which the vane disk 22 is fitted with an internal toothing 26 which is provided in a central mounting opening 27 of the vane disk 22.

[0047] On the transmission side of the brake boss 15, facing away from the clutch member 13, a pressure disk 28 is positioned on the drive shaft 4 so as to be non-rotatable relative thereto. For this purpose, the pressure disk 28 has internal teeth 29 arranged in a central mounting opening 30 of the pressure disk 28 and is positioned on a mounting part 32 of the drive shaft 4 which is toothed and has external teeth 31.

[0048] Between the brake hub 15 and the pressure disc 28, a first friction disc 33 and a second friction disc 34 are provided. A brake disc 35 is arranged between the two friction discs 33, 34. The brake disc 35 is supported in the housing 3 in a rotationally immovable or non-rotatable manner. For this purpose, the brake disc 35 has a pocket-like cavity 36 on its outer periphery. In a wall 37 of the housing 3, a tooth- or claw-like support 38 is provided which is designed to fit into the cavity 36. The support 38 engages in the cavity 36, so that the brake disc 35 is mounted in the housing 3 in the form of a plug-in toothing.

[0049] At its rear face 39 oriented towards the transmission mechanism 5 , the pressure disc 28 is supported in a bearing 40 .

[0050] The brake boss 15 has a central annular receiving part 42 on its rear side, i.e. on the rear face 41 of the brake boss 15 oriented towards the brake disc 35. Onto the receiving part 42 the first friction disc 33 fits with a central opening 43 of the first friction disc 33.

[0051] The pressure disc 28 has a central receiving portion 45 on a front face 44 of the pressure disc 28 oriented towards the brake disc 35. The second friction disc 34 has a central opening 46 by which the second friction disc 34 fits onto the receiving portion 45 of the pressure disc 28 and is positioned therein.

[0052] The brake boss 15 is rotatably supported on the drive shaft 4 by the brake screw thread 14. The pressure disc 28 cannot rotate or slide axially relative to the drive shaft 4. Two friction discs 33, 34 and a brake disc 35 located therebetween are arranged between the brake boss 15 and the pressure disc 28. The brake disc 35 is supported in the housing 3 in a rotationally prevented manner.

[0053] 7 to 10, the operating process of the brake-clutch system 12 of the hoist 1 when holding, lowering and lifting a load will be described.

[0054] 7 to 10, only the engaging body 20 of the clutch member 13 that projects toward the brake boss 15 is shown.

[0055] The engaging body 20 of the clutch member 13 and the columnar body 21 of the brake boss 15 are arranged on a common outer rotational orbit or circular orbit, so that when the clutch member 13 and the brake boss 15, and thus the engaging body 20 and the columnar body 21, are rotated relative to each other, the engaging body 20 and the columnar body 21 come into contact with each other and reach the operative position.

[0056] The vane body 23 of the vane disk 22 and the driving body 20 of the clutch member 13 are also arranged on one inner rotational orbit or circular orbit so that the vane body 23 and the driving body 20 come into contact with each other and thus come into an operating relationship when they rotate relative to each other.

[0057] To hold a load, the load moment acting on the drive shaft 4 generates an axial force on the brake boss 15, which clamps the friction discs 33, 34 located between the brake boss 15 and the pressure disc 28 and the brake disc 35 located therebetween. The brake disc 35 is supported against the housing 3, so that the load is held reliably. At this time, the driver 20 of the clutch member 13 has no contact with either the vane body 23 of the vane disc 22 or the column body 21 of the brake boss 15. Figure 7 shows this operating position.

[0058] To unload the load (see FIG. 8), the clutch member 13 is rotated counterclockwise (arrow P1), so that the driver 20 of the clutch member 13 comes into contact with the column 21 of the brake boss 15 and drives it. This rotational movement is performed in the direction of arrow P1. The brake boss 15 slides axially on the brake thread 11 of the drive shaft 4 and the frictionally coupled contact with the first friction disk 33 is released. The axial force or friction moment is thus reduced and the load is lowered until the friction moment is built up again. FIG. 8 shows this operating position. The load can be lowered until the driven drive shaft 4 again compensates for the axial play. The approximately triangular or approximately trapezoidally configured driver 20 of the clutch member 13 acts on the column 21. The entraining body 20 comes into contact with the vane bodies 23 of the vane disk 22 with an active surface of the entraining body 20 which is located further inward.

[0059] To lift the load, the clutch member 13 is rotated clockwise. This is indicated by the arrow P2 in FIG. 9. By rotation of the clutch member 13 or during the rotational movement of the clutch member 13, the driver 20 and the vane body 23 are rotated relative to one another. The driver 20 of the clutch member 13 abuts against the stop surface of the vane body 23 of the vane disk 22. The vane disk 22 is fitted onto the drive shaft 4 in a non-rotatable manner, so that the drive shaft 4 is driven via the vane disk 22. By the rotation of the drive shaft 4 relative to the brake boss 15, the friction moment is eliminated and the drive moment is now transmitted to the drive shaft 4 via the internal toothing 26 of the vane disk 22. The driver 20 of the clutch member 13 then drives the brake boss 15 which rotates loosely.

[0060] In Figures 11 to 16, another embodiment of the hoist 1 according to the invention is shown. The hoist 1 shown in Figures 11 to 16 corresponds in its basic structure to the hoist described above. Corresponding parts and part components are given the same reference numerals. Please refer to the previous description of the hoist 1.

[0061] The brake-clutch system 12 comprises a clutch member 13 connectable to the motor shaft 11 and a brake boss 15 rotatably arranged on a brake thread 14 of the drive shaft 4. The clutch member 13 comprises a disk body 16 which comprises a driver 20 formed on the disk body 16. The clutch member 13 and the disk body 16 of the clutch member 13 are components of a planetary pinion of the output stage of a planetary gear, via which an electric motor (not shown here) drives the hoist 1.

[0062] The clutch member 13 has a driver 20 oriented toward the brake boss 15. The brake boss 15 has a column 21 protruding axially toward the clutch member 13.

[0063] A vane disc 22 is disposed between the clutch member 13 and the brake boss 15 .

[0064] The follower 20 is an integral part of the disk body 16 of the clutch member 13, made of the same material, and is axially oriented towards the brake boss 15. The follower 20 meshes with a column 21 of the brake boss 15, which projects towards the clutch member 13, during operation of the hoist 1. During rotation, the follower 20 of the clutch member 13 and the column 21 of the brake boss 15 and the vane body 23 of the vane disk 22 come into contact and cooperate to transmit torque.

[0065] A brake disc 35 is disposed between the brake boss 15 and the pressure disc 28. The first friction disc 33 and the second friction disc 34 are joined to front and rear flat surfaces of the brake disc 35. The brake disc 35 is supported in the housing 3 so as to be non-rotatable relative to the housing 3 and to be prevented from rotating.

[0066] The braking process in the brake-clutch system 12 of the hoist 1 when holding, lowering and lifting a load corresponds to the flow described above.

[0067] In the case of the hoist 1 shown in Figs. 11 to 16, an additional spring element 47 is integrated in the brake clutch system 12. The spring element 47 is defined and designed to press the brake disc 35 towards the brake hub 15. The spring element 47 is supported in the housing 3. For this purpose, a receiving part 48 is provided in the housing 3 on the side facing away from the brake disc 35. The spring element 47 is a compression spring, in particular a helical spring. With one end 49, the spring element 47 is positioned in the receiving part 48 provided in the housing 3 and with the other end 50 acts against the brake disc 35. In the embodiment shown, a total of four spring elements 47 are arranged uniformly offset on one pitch circle. As can be seen in particular in Fig. 16, the end 50 of the spring element 47 rests against an outer toothing 51 of the brake disc 35.

[0068] By using the spring elasticity to press the brake disc 35 against the brake boss 15, a minimum friction moment is always generated, even when the brake is released, which serves to assist in closing the brake or brake clutch system 12. This application relates to the invention described in the claims, but also includes the following as other aspects. 1. A hoisting machine, A load chain sheave (6), a drive shaft (4) that drives the load chain sheave (6) via a transmission mechanism (5); a motor (10) having a motor shaft (11); Equipped with The motor shaft (11) and the drive shaft (4) are connected via a brake clutch system (12). In the hoisting machine, The brake clutch system (12) includes a clutch member (13) connectable to the motor shaft (11) and a brake boss (15) rotatably disposed on a brake thread (14) of the drive shaft (4); The clutch member (13) has a follower (20), and the brake boss (15) has a column (21). A vane disc (22) is disposed between the clutch member (13) and the brake boss (15), the vane disc (22) has a vane body (23) and is disposed on a connecting portion (24) of the drive shaft (4); A pressure disc (28) is positioned on the drive shaft (4) on the transmission mechanism side of the brake boss (15) so as to be non-rotatable relative to the drive shaft (4). Between the brake boss (15) and the pressure disc (28), two friction discs (33, 34) and a brake disc (35) fitted between the friction discs (33, 34) are disposed, and the brake disc (35) is supported so as to be non-rotatable relative to the drive shaft (4). A hoisting machine characterized by the above. 2. The hoist according to claim 1, characterized in that the following body (20) and the column body (21) are rotatable relative to each other and come into contact with each other during the rotational movement of the clutch member (13) for lowering a load. 3. The hoist according to claim 1 or 2, characterized in that the entraining body (20) and the vane body (23) are rotatable relative to each other and come into contact with each other during rotational movement of the clutch member (13) for lifting a load. 4. The hoist of claim 3, characterized in that, during rotational movement of the clutch member (13) to lift a load, the driving body (20) and the column body (21) come into contact with each other, and the brake boss (15) is moved in the rotational direction. 5. 5. The hoist according to any one of claims 1 to 4, wherein the brake disc (35) is supported within a housing (3). 6. The hoist of claim 5, wherein the brake disc (35) has a cavity (36) and a support (38) provided on the housing (3) engages within the cavity (36). 7. The hoist of claim 6, characterized in that the cavity (36) is provided on the outer periphery of the brake disc (35) and the support (38) is provided on a wall (37) of the housing (3). 8. 8. The hoist according to any one of 1 to 7 above, wherein the pressure disc (28) is supported by a bearing (40) on the transmission mechanism side. 9. 9. The hoist according to any one of claims 1 to 8, characterized in that the brake boss (15) has an annular receiving portion (42) on a side oriented towards the pressure disc (28), and a first friction disc (33) is arranged on the receiving portion (42). 10. 10. The hoist of any one of claims 1 to 9, characterized in that the pressure disc (28) has a receiving portion (45) on a side oriented towards the brake boss (15), and on the receiving portion (45) a second friction disc (34) is arranged. 11. 11. The hoist according to any one of claims 1 to 10, characterized in that the follower (20) protrudes axially toward the brake boss (15) and the column body (21) protrudes axially toward the clutch member (13). 12. 12. The hoist according to any one of claims 1 to 11, characterized in that it comprises a spring element (47) defined and configured to urge the brake disc (35) towards the brake boss (15). 13. 12. The hoist of claim 12, wherein the spring element (47) is supported within the housing (3). [Explanation of symbols]

[0069] 1 Hoisting machine 2 Support Hooks 3. Housing 4 Drive shaft 5 Transmission mechanism 6 Load Chain Sheave 7. Gears 8 Driving dentition 9 Load chain sheave shaft 10 Electric motor 11 Motor shaft 12 Brake clutch system 13 Clutch parts 14 Braking thread 15 Brake boss 16 disks 17 Joining part 18 Connection receiving part 19 Inner dentition 20. Group 21 Column 22 Blade Disc 23 Wing body 24 4 connecting part 25 24 external dentition 26 22 inner dentition 27 Installation opening 28 Pressure Disc 29 30 inner dentition 30 28 mounting opening 31 External dentition 32 Installation part 33 First friction disc 34 Second Friction Disc 35 Brake disc 36 Vacant Space 37 The third wall 38 Support 39 28 rear 40 Bearings 41 35 rear 42 Receiving part 43 Opening in 33 44 28 Front 45 Receiving part 46 Opening in 34 47 Spring elements 48 Receiving part 49 End of 47 50 47 End 51 35 tooth bodies P1 Arrow P2 Arrow

Claims

1. A hoisting machine, comprising: A load chain sheave (6); a drive shaft (4) that drives the load chain sheave (6) via a transmission mechanism (5); a motor (10) having a motor shaft (11); Equipped with The motor shaft (11) and the drive shaft (4) are connected via a brake clutch system (12). In the hoisting machine, The brake clutch system (12) includes a clutch member (13) connectable to the motor shaft (11) and a brake boss (15) rotatably disposed on a brake thread (14) of the drive shaft (4); The clutch member (13) has a follower (20) and the brake boss (15) has a column (21); A vane disc (22) is disposed between the clutch member (13) and the brake boss (15), the vane disc (22) has a vane body (23) and is disposed on a connecting portion (24) of the drive shaft (4); A pressure disc (28) is positioned on the drive shaft (4) on the transmission mechanism side of the brake boss (15) so as to be non-rotatable relative to the drive shaft (4). Between the brake boss (15) and the pressure disc (28), two friction discs (33, 34) and a brake disc (35) assembled between the friction discs (33, 34) are arranged, and the brake disc (35) is supported so as to be non-rotatable relative to the drive shaft (4). the hoist comprises a spring element (47) defined and configured to urge said brake disc (35) towards said brake boss (15), A hoisting machine characterized by the above.

2. The hoist according to claim 1, characterized in that the follower (20) and the column (21) are rotatable relative to each other and come into contact with each other during the rotational movement of the clutch member (13) for lowering a load.

3. The hoist according to claim 1 or 2, characterized in that the follower (20) and the vane (23) are rotatable relative to each other and come into contact with each other during rotational movement of the clutch member (13) for lifting a load.

4. 4. A hoist as claimed in claim 3, characterized in that during the rotational movement of the clutch member (13) for lifting a load, the driving body (20) and the column body (21) come into contact and the brake boss (15) is moved in the direction of rotation.

5. 5. A hoist according to claim 1, wherein the brake disc (35) is mounted in a housing (3).

6. 6. A hoist according to claim 5, characterized in that the brake disc (35) has a cavity (36) in which a support (38) provided on the housing (3) engages.

7. 7. A hoist according to claim 6, characterized in that the cavity (36) is provided on the outer periphery of the brake disc (35) and the support (38) is provided on a wall (37) of the housing (3).

8. 8. A hoist as claimed in claim 1, wherein the pressure disc (28) is supported on a bearing (40) on the transmission mechanism side.

9. 9. A hoist according to claim 1, characterized in that the brake boss (15) has an annular receiving part (42) on the side oriented towards the pressure disc (28), on which a first friction disc (33) is arranged.

10. 10. A hoist according to claim 1, characterized in that the pressure disc (28) has a receiving portion (45) on a side directed towards the brake boss (15), on which a second friction disc (34) is arranged.

11. 11. A hoist according to claim 1, characterized in that the follower (20) projects axially towards the brake boss (15) and the column (21) projects axially towards the clutch member (13).

12. 2. A hoist according to claim 1, characterized in that the spring element (47) is supported in a housing (3).

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