Retractable device and engineering vehicle

Abstract

The invention relates to a folding and unfolding device and an engineering vehicle. The folding and unfolding device comprises a supporting seat (1); the winding and unwinding drum (2) is provided with a first rotating shaft (21), the first rotating shaft (21) is erected on the supporting seat (1), and the winding and unwinding drum (2) is configured to rotate around the first rotating shaft (21) so as to wind or unwind a wound object; the driving assembly (3) is erected on the supporting base (1) and located on one side of the winding and unwinding barrel (2), and an output shaft (31) of the driving assembly and the first rotating shaft (21) are collinear; the switching assembly (4) is connected with an output shaft (31) of the driving assembly; the clutch assembly (5) is operably connected with the switching assembly (4), the clutch assembly (5) and the winding and unwinding drum (2) are coaxially arranged, and the clutch assembly (5) is configured to be close to or far away from the winding and unwinding drum (2) along with rotation of the switching assembly (4) so as to be connected with or separated from the winding and unwinding drum (2).

Description

Technical Field

[0001] The present disclosure relates to the field of electric power rescue equipment, and in particular to a retractable device and an engineering vehicle. Background Art

[0002] The cable winch of the emergency power supply vehicle is mostly driven by a hydraulic motor or an electric motor to achieve automatic cable retraction and release. However, when the motor / electric motor is not started or fails, it has a strong self-locking resistance and cannot complete manual cable retraction and release, affecting the efficiency of emergency rescue operations. For special working conditions such as manual cable management and non-starting operations, the motor / electric motor needs to be shielded and the cable winch rotates alone.

[0003] The cable winch in the related art is usually equipped with multiple sets of mechanical latches, and the latches are manually operated multiple times to disengage or engage the winch with the motor drive disk to achieve automatic / manual switching, which is cumbersome to operate, inefficient and unsafe. Summary of the invention

[0004] In view of this, an embodiment of the present disclosure provides a retractable device and an engineering vehicle, which can improve operability.

[0005] In one aspect of the present disclosure, there is provided a retractable device, comprising:

[0006] Support seat;

[0007] The retractable drum has a first rotating shaft, the first rotating shaft is mounted on the support seat, and the retractable drum is configured to rotate around the first rotating shaft to recycle or release the wound object;

[0008] The driving assembly is mounted on the supporting seat and is located on one side of the retractable cylinder, and the output shaft of the driving assembly is colinear with the first rotating shaft;

[0009] A switching assembly is disposed between the retractable cylinder and the driving assembly and is connected to the output shaft of the driving assembly; and

[0010] The clutch assembly is arranged on one side of the retractable cylinder close to the switching assembly, is operably connected to the switching assembly, and is coaxially arranged with the retractable cylinder. The clutch assembly is configured to approach or move away from the retractable cylinder as the switching assembly rotates, so as to engage with or disengage from the retractable cylinder.

[0011] In some embodiments, the switching component includes:

[0012] A second rotating shaft is connected to the output shaft of the driving assembly and the first rotating shaft respectively; and

[0013] An operating disk is sleeved on the second rotating shaft, and the center of the operating disk has a hollow first connecting sleeve;

[0014] The clutch assembly includes a hollow second connecting sleeve, which is sleeved on the second rotating shaft, and the outer periphery of the second connecting sleeve is threadedly connected to the inner wall of the first connecting sleeve, so that the clutch assembly moves axially on the second rotating shaft as the operating panel rotates.

[0015] In some embodiments, the clutch assembly further comprises:

[0016] A first clutch disc, a second connecting sleeve disposed at the center of the first clutch disc; and

[0017] A clutch shaft is passed through the first clutch disc, the axis direction of the clutch shaft is parallel to the first rotating shaft, and the end of the clutch shaft close to the retractable cylinder is spherical;

[0018] Among them, a coupling hole is provided at the end of the retractable cylinder, and the clutch shaft is configured to approach the retractable cylinder with the first clutch disk and be inserted into the coupling hole so as to transmit the output torque of the drive assembly to the retractable cylinder, and separate from the coupling hole as the first clutch disk moves away from the retractable cylinder.

[0019] In some embodiments, the clutch assembly further comprises:

[0020] A second clutch disc is spaced apart from the first clutch disc along the axis of the clutch shaft, and the clutch shaft passes through the first clutch disc and the second clutch disc; and

[0021] A hollow third connecting sleeve is arranged at the center of the second clutch disc, and a key groove is provided on the inner wall of the third connecting sleeve;

[0022] The second rotating shaft has a first shaft section, the outer periphery of the first shaft section is provided with a keyway matched with the third connecting sleeve, and the third connecting sleeve is sleeved on the outer periphery of the first shaft section.

[0023] In some embodiments, the clutch assembly further comprises:

[0024] An elastic member, sleeved on the outer circumference of the clutch shaft;

[0025] The elastic member is configured to be in a compressed state as the clutch shaft is separated from the retractable cylinder.

[0026] In some embodiments, there are multiple clutch shafts, which are arranged at intervals along the circumference of the first clutch plate and the second clutch plate.

[0027] In some embodiments, the second rotating shaft further comprises:

[0028] A second shaft section is adjacent to the first shaft section, the diameter of the second shaft section is smaller than that of the first shaft section, and the operating disc and the first clutch disc are sleeved on the second shaft section; and

[0029] The third shaft section is located on a side of the second shaft section away from the first shaft section. The third shaft section is sleeved on the outer periphery of the output shaft of the driving component. The diameter of the third shaft section is smaller than the diameter of the second shaft section.

[0030] In some embodiments, the second rotating shaft further comprises:

[0031] a fourth shaft segment connected between the second shaft segment and the third shaft segment, wherein a diameter of the fourth shaft segment is larger than a diameter of the third shaft segment and smaller than a diameter of the second shaft segment;

[0032] The retractable device further comprises:

[0033] The first bearing seat is mounted on the support seat. The first bearing seat is sleeved on the outer periphery of the third shaft segment and abuts against the fourth shaft segment. The end of the first connecting sleeve close to the driving component abuts between the first bearing seat and the fourth shaft segment.

[0034] In some embodiments, the operating panel further comprises:

[0035] an operating ring, coaxially arranged with the first connecting sleeve, the diameter of the operating ring being larger than the diameter of the first connecting sleeve; and

[0036] A plurality of reinforcing members are connected between the operating ring and the first connecting sleeve and are arranged at intervals along the circumference of the operating ring.

[0037] In some embodiments, the retractable barrel includes:

[0038] A drum body, wherein one end of the drum body close to the clutch assembly is recessed inwardly so as to form an accommodating space for accommodating the clutch assembly;

[0039] A transition plate connected to one end of the roller body close to the clutch assembly, and a coupling hole is formed in the transition plate; and

[0040] The bearing group is arranged on both sides of the drum body and sleeved on the outer periphery of the first rotating shaft.

[0041] In some embodiments, the retractable device further comprises:

[0042] A second bearing seat is mounted on an end of the support seat away from the driving assembly, and the second bearing seat is sleeved on the outer periphery of the first rotating shaft;

[0043] A retaining ring is disposed at an end of the first rotating shaft away from the driving assembly; and

[0044] The fixing seat is mounted on one end of the supporting seat close to the driving assembly and is configured to support the driving assembly.

[0045] In another aspect of the present disclosure, there is provided an engineering vehicle, comprising:

[0046] A retractable device as in any of the above embodiments.

[0047] Therefore, according to the embodiment of the present disclosure, by providing a switching assembly and a clutch assembly between the drive assembly and the retractable cylinder, the disengaged or engaged state between the retractable cylinder and the drive assembly can be switched. When the drive assembly is not started in the vehicle or a malfunction occurs, it can be quickly switched to manual mode, allowing the operator to manually retract the cable, thereby reducing the difficulty of operation and improving the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0049] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0050] Figure 1 are cross-sectional views of some embodiments of the retractable device according to the present disclosure;

[0051] Figure 2 are cross-sectional views of other embodiments of the retractable device according to the present disclosure;

[0052] Figure 3 It is a schematic diagram of the structure of some embodiments of the clutch assembly of the retractable device according to the present disclosure;

[0053] Figure 4 is a schematic diagram of the structure decomposition of some embodiments of the clutch assembly of the retractable device according to the present disclosure;

[0054] Figure 5 is a schematic structural diagram of some embodiments of the second rotating shaft of the retractable device according to the present disclosure;

[0055] Figure 6 It is a schematic diagram of the structure of some embodiments of the operating panel of the retractable device according to the present disclosure;

[0056] Figure 7 It is a schematic structural diagram of some embodiments of the retractable tube of the retractable device according to the present disclosure;

[0057] Fig. 8A is a partial schematic diagram of some embodiments of the retractable device in the manual mode according to the present disclosure;

[0058] Figure 8B is a partial schematic diagram of some embodiments of the retractable device according to the present disclosure, in which the clutch shaft and the transition plate are close to each other;

[0059] Figure 8C It is a partial schematic diagram of some embodiments of the retractable device in the automatic mode according to the present disclosure.

[0060] In the figure:

[0061] 1. Support seat; 2. Retractable cylinder; 21. First rotating shaft; 22. Engagement hole; 23. Drum body; 24. Transition plate; 25. Bearing assembly; 3. Drive assembly; 31. Output shaft of drive assembly; 4. Switch assembly; 5. Clutch assembly; 51. Second connecting sleeve; 52. First clutch disc; 53. Clutch shaft; 531. Universal ball joint; 54. Second clutch disc; 55. Third connecting sleeve; 56. Elastic member; 57. First installation hole; 58, second mounting hole; 59, bushing; 6, second rotating shaft; 61, first shaft section; 62, second shaft section; 63, third shaft section; 64, fourth shaft section; 7, operating panel; 71, first connecting sleeve; 72, operating ring; 73, reinforcement; 81, first bearing seat; 82, second bearing seat; 83, retaining ring; 84, fixing seat; 91, screw; 92, anti-loosening nut; 93, gasket; 94, bolt group; 95, retaining spring.

[0062] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0063] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0064] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0065] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0066] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0067] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0068] The cable winch in the related art is usually equipped with multiple sets of mechanical latches, and the latches are manually operated multiple times to disengage or engage the winch with the motor drive disk to achieve automatic / manual switching, which is cumbersome to operate, inefficient and unsafe.

[0069] In view of this, in one aspect of an embodiment of the present disclosure, a retractable device is provided to improve operability.

[0070] Figure 1 is a cross-sectional view of some embodiments of the retractable device according to the present disclosure, Figure 2 are cross-sectional views of other embodiments of the retractable device according to the present disclosure, with reference to Figure 1 and Figure 2 The retracting and releasing device includes a support seat 1, a retracting and releasing cylinder 2, a driving component 3, a switching component 4 and a clutch component 5.

[0071] The retractable drum 2 has a first rotating shaft 21, which is mounted on the support base 1. The retractable drum 2 is configured to rotate around the first rotating shaft 21 to recycle or release the wound object. The driving assembly 3 is mounted on the support base 1 and is located on one side of the retractable drum 2. The output shaft 31 of the driving assembly is colinear with the first rotating shaft 21.

[0072] The switching assembly 4 is disposed between the retractable cylinder 2 and the driving assembly 3, and is connected to the output shaft 31 of the driving assembly. The clutch assembly 5 is disposed on a side of the retractable cylinder 2 close to the switching assembly 4, is operably connected to the switching assembly 4, and is coaxially disposed with the retractable cylinder 2. The clutch assembly 5 is configured to approach or move away from the retractable cylinder 2 as the switching assembly 4 rotates, so as to engage with or disengage from the retractable cylinder 2.

[0073] The support base 1 can be used to support the ground or any working platform to provide support for the retractable cylinder 2, the driving assembly 3, the switching assembly 4 and the clutch assembly 5. The support base 1 includes but is not limited to being fixed to the working platform by bolts. The retractable cylinder 2 includes but is not limited to being a cable winch, etc., and the outer surface is used to wind the cable.

[0074] The outer circumference of the retractable cylinder 2 can be wound with objects, including but not limited to cables, hydraulic pipes, hoses, wire ropes, etc. The winding object refers to the object wound around the outer circumference of the retractable cylinder 2, and the winding object can be recovered and released by rotating the retractable cylinder 2. The driving component 3 includes but is not limited to a motor, and the driving component 3 can drive the switching component 4 to rotate, and then drive the clutch component 5 to rotate.

[0075] The retractable device has an automatic mode and a manual mode. When the clutch assembly 5 is engaged with the retractable cylinder 2, the retractable device is in the automatic mode. Figure 2 In the state shown, the driving torque of the driving assembly 3 is transmitted to the retractable drum 2 by the switching assembly 4 and the clutch assembly 5, so that the retractable drum 2 is driven to rotate by the driving assembly 3 to realize automatic retraction and release of the cable.

[0076] When the clutch assembly 5 is separated from the retractable tube 2, the retractable device is in manual mode. Figure 1 In the state shown, the driving torque of the driving assembly 3 cannot be transmitted to the retractable cylinder 2, the rotation state of the retractable cylinder 2 will not be affected by the driving assembly 3, and the retractable cylinder 2 can be rotated by manual operation to control the retraction and release of the cable.

[0077] In this embodiment, by providing a switching assembly 4 and a clutch assembly 5 between the driving assembly 3 and the retracting cylinder 2, the disengaged or engaged state between the retracting cylinder 2 and the driving assembly 3 can be switched. When the driving assembly 3 is not started in the vehicle or a malfunction occurs, it can be quickly switched to a manual mode, allowing the operator to manually retract cables and other windings, thereby reducing the difficulty of operation and improving the operating efficiency.

[0078] refer to Figure 1 and Figure 2 In some embodiments, the switching assembly 4 includes a second rotating shaft 6 and an operating disk 7, wherein the second rotating shaft 6 is respectively connected to the output shaft 31 of the driving assembly and the first rotating shaft 21. The operating disk 7 is sleeved on the second rotating shaft 6, and the center of the operating disk 7 has a hollow first connecting sleeve 71.

[0079] The clutch assembly 5 includes a hollow second connecting sleeve 51, which is sleeved on the second rotating shaft 6 and slidably matched with the second rotating shaft 6. The outer periphery of the second connecting sleeve 51 is threadedly connected to the inner wall of the first connecting sleeve 71, so that the clutch assembly 5 moves axially on the second rotating shaft 6 as the operating panel 7 rotates.

[0080] The outer circumference of the second connecting sleeve 51 is provided with an external thread, and the inner circumference of the first connecting sleeve 71 is provided with a matching internal thread. The external thread of the second connecting sleeve 51 includes but is not limited to a trapezoidal thread, thereby achieving reliable load-bearing capacity and good self-locking performance.

[0081] When the retractable device is in manual mode, the outer periphery of the second connecting sleeve 51 is completely engaged with the inner wall of the first connecting sleeve 71. When the retractable device is in automatic mode, the outer periphery of the second connecting sleeve 51 is partially engaged with the inner wall of the first connecting sleeve 71.

[0082] In this embodiment, the second connecting sleeve 51 and the first connecting sleeve 71 are threadedly connected, and the axial movement of the clutch assembly 5 can be achieved by rotating the operating disk 7, which is highly convenient to operate and can improve the efficiency of switching the retractable device mode.

[0083] Figure 3 is a schematic structural diagram of some embodiments of the clutch assembly of the retractable device according to the present disclosure, Figure 4 is a schematic diagram of the structure of some embodiments of the clutch assembly of the retractable device according to the present disclosure, with reference to Figure 1~Figure 4 In some embodiments, the clutch assembly 5 further includes a first clutch disc 52 and a clutch shaft 53 .

[0084] The first clutch disc 52 has a first mounting hole 57 at its center, and the second connecting sleeve 51 is disposed at the center of the first clutch disc 52, including but not limited to being connected to the first clutch disc 52 via a screw 91. The clutch shaft 53 passes through the first clutch disc 52, and the axial direction of the clutch shaft 53 is parallel to the first rotating shaft 21, and the end of the clutch shaft 53 close to the retractable cylinder 2 is spherical.

[0085] The end of the retractable cylinder 2 is provided with an engagement hole 22, and the clutch shaft 53 is configured to approach the retractable cylinder 2 with the first clutch disk 52 and be inserted into the engagement hole 22, so as to transmit the output torque of the drive assembly 3 to the retractable cylinder 2, and to separate from the engagement hole 22 as the first clutch disk 52 moves away from the retractable cylinder 2. A second mounting hole 58 may also be provided on the disc surface of the first clutch disk 52, the clutch shaft 53 is passed through the second mounting hole 58, and the shaft sleeve 59 is installed in the second mounting hole 58.

[0086] A universal ball head 531 may be provided on the side of the clutch shaft 53 close to the retractable cylinder 2 to provide a certain angle compensation during alignment, improve the coupling efficiency, and reduce stress concentration when in close contact with the retractable cylinder 2 to prevent damage to the retractable cylinder 2. A locking nut 92 and a gasket 93 may be sleeved on the end of the clutch shaft 53 away from the retractable cylinder 2 to improve the connection reliability between the clutch shaft 53 and the first clutch disc 52.

[0087] In this embodiment, the switching between the automatic mode and the manual mode of the retracting and releasing device is achieved by plugging or separating the engaging hole 22 and the clutch shaft 53. During the separation process, it is only necessary to rotate the operating disk 7 to drive the clutch shaft 53 away from the retracting and releasing cylinder 2. During the engagement process, the first clutch disk 52 can be driven to rotate by the driving assembly 3 to assist the clutch shaft 53 in aligning with the engaging hole 22. There is no need to coaxially align the engaging hole 22 and the clutch shaft 53 in advance. The operation is simple and the reliability is high.

[0088] If the driving assembly 3 is not turned on during the engagement process, the operating disk 7 is rotated, and only the retractable cylinder 2 needs to be rotated. When a "click" sound is heard, the clutch assembly 5 and the retractable cylinder 2 are successfully docked.

[0089] refer to Figure 1~Figure 4 In some embodiments, the clutch assembly 5 further includes: a second clutch disc 54 and a third connecting sleeve 55. The second clutch disc 54 and the first clutch disc 52 are spaced apart from each other along the axis direction of the clutch shaft 53, and the clutch shaft 53 is disposed between the first clutch disc 52 and the second clutch disc 54.

[0090] The third connecting sleeve 55 is hollow and is arranged at the center of the second clutch plate 54. A keyway is provided on the inner wall of the third connecting sleeve 55. The second rotating shaft 6 has a first shaft section 61. The outer periphery of the first shaft section 61 is provided with a keyway matched with the third connecting sleeve 55. The third connecting sleeve 55 is sleeved on the outer periphery of the first shaft section 61.

[0091] The center of the second clutch disc 54 may be provided with a mounting hole corresponding to the first mounting hole 57, so that the third connecting sleeve can be mounted on the disc surface of the second clutch disc 54 through the bolt group 94. The disc surface of the second clutch disc 54 may also be provided with a mounting hole corresponding to the second mounting hole 58, so that the clutch shaft 53 is plugged into the second clutch disc 54, and the clutch shaft 53 is fixed to the mounting hole of the second clutch disc 54 through the retaining spring 95.

[0092] The keyway provided on the inner wall of the third connecting sleeve 55 and the outer periphery of the first shaft segment 61 includes but is not limited to a spline, which has high strength and good centering property and can reliably transmit torque. The keyway extends axially, and the internal spline of the third connecting sleeve 55 always remains connected with the external spline of the first shaft segment 61 and does not disengage.

[0093] In this embodiment, by providing keyways on the inner wall of the third connecting sleeve 55 and the outer periphery of the first shaft segment 61, a self-locking effect can be achieved, and the position of the clutch assembly 5 is automatically limited without adding a locking mechanism, thereby improving the reliability of the mode switching operation.

[0094] refer to Figure 1~Figure 4 In some embodiments, the clutch assembly 5 further includes an elastic member 56, which is sleeved on the outer circumference of the clutch shaft 53. The elastic member 56 is configured to be in a compressed state as the clutch shaft 53 is separated from the retractable cylinder 2.

[0095] The elastic member 56 includes but is not limited to a spring. When the clutch shaft 53 is not inserted into the engagement hole 22, the spring is in a compressed state, and the spring is compressed to a length equal to the distance between the first clutch disc 52 and the second clutch disc 54. The elastic member 56 may also pass through the outer circumference of the second rotating shaft 6.

[0096] When the clutch assembly 5 approaches the retractable cylinder 2 until the clutch shaft 53 contacts the end of the retractable cylinder 2, the spring is compressed. When the clutch shaft 53 enters the engagement hole 22, the spring will spring open and release elastic potential energy, assisting the clutch shaft 53 to move toward the direction of the retractable cylinder 2 so as to be inserted into the engagement hole 22 more quickly, so that the retractable device switches to the automatic mode without manual alignment.

[0097] In this embodiment, an elastic member 56 is disposed outside the clutch shaft 53 to assist the clutch shaft 53 in docking with the engaging hole 22 , thereby improving the mode switching efficiency and convenience of the retractable device.

[0098] refer to Figure 1~Figure 4 In some embodiments, the number of clutch shafts 53 is multiple, and they are spaced apart along the circumference of the first clutch disc 52 and the second clutch disc 54. The number of clutch shafts 53 includes but is not limited to 4, and they are equally spaced apart along the circumference of the first clutch disc 52 and the second clutch disc 54. In this embodiment, the provision of multiple clutch shafts 53 can improve the structural strength of torque transmission, making the mode switching operation more reliable and efficient.

[0099] Figure 5 is a schematic diagram of the structure of some embodiments of the second rotating shaft of the retractable device according to the present disclosure, with reference to Figure 1 , Figure 2 and Figure 5 In some embodiments, the second rotating shaft 6 also includes a second shaft segment 62 and a third shaft segment 63 .

[0100] The second shaft section 62 is adjacent to the first shaft section 61, and the diameter of the second shaft section 62 is smaller than that of the first shaft section 61. The operating disk 7 and the first clutch disk 52 are sleeved on the second shaft section 62. The third shaft section 63 is located on the side of the second shaft section 62 away from the first shaft section 61, and the third shaft section 63 is sleeved on the outer periphery of the output shaft of the driving assembly 3, and the diameter of the third shaft section 63 is smaller than that of the second shaft section 62.

[0101] A keyway and an inner hole may be provided inside the first shaft section 61 so as to be connected with the first rotating shaft 21. The second shaft section 62 includes but is not limited to being an optical axis, and the second connecting sleeve 51 moves along the second shaft section 62. A spline may be provided inside the third shaft section 63, and the inner spline of the third shaft section 63 may be connected and coaxial with the output shaft 31 of the driving assembly.

[0102] In this embodiment, the second rotating shaft 6 can be configured as a stepped shaft, and torque transmission is achieved by being connected to the driving assembly 3, the clutch assembly 5 and the first rotating shaft 21 respectively.

[0103] refer to Figure 1 , Figure 2 and Figure 5In some embodiments, the second rotating shaft 6 also includes a fourth shaft segment 64, which is connected between the second shaft segment 62 and the third shaft segment 63, and the diameter of the fourth shaft segment 64 is larger than the diameter of the third shaft segment 63 and smaller than the diameter of the second shaft segment 62.

[0104] The retractable device further includes a first bearing seat 81, which is mounted on the support seat 1, and is sleeved on the outer periphery of the third shaft segment 63 and abuts against the fourth shaft segment 64, and the end of the first connecting sleeve 71 close to the driving assembly 3 abuts between the first bearing seat 81 and the fourth shaft segment 64. The first bearing seat 81 includes but is not limited to a horizontal bearing seat.

[0105] The outer periphery of the third shaft segment 63 cooperates with the first bearing seat 81, and the fourth shaft segment 64 is in the form of a limiting boss. The diameter of the fourth shaft segment 64 is smaller than the inner diameter of the thread of the first connecting sleeve 71. The step between the fourth shaft segment 64 and the second shaft segment 62 and the right end face of the first bearing seat 81 form a limiting groove, so that the first connecting sleeve 71 can only rotate in the limiting groove but cannot slide left and right, so as to limit the operating panel 7.

[0106] Figure 6 1 is a schematic diagram of the structure of some embodiments of the operating disk of the retractable device according to the present disclosure. In some embodiments, the operating disk 7 further includes an operating ring 72 and a plurality of reinforcing members 73. The operating ring 72 is coaxially arranged with the first connecting sleeve 71, and the diameter of the operating ring 72 is greater than the diameter of the first connecting sleeve 71. The plurality of reinforcing members 73 are connected between the operating ring 72 and the first connecting sleeve 71, and are arranged at intervals along the circumference of the operating ring 72.

[0107] In this embodiment, the operating panel 7 includes an operating ring 72, a first connecting sleeve 71 and a reinforcing member 73 connected between the operating ring 72 and the first connecting sleeve 71, which is convenient for operators to operate and has good structural stability.

[0108] Figure 7 is a schematic diagram of the structure of some embodiments of the retractable tube of the retractable device according to the present disclosure, with reference to Figure 1 , Figure 2 and Figure 7 In some embodiments, the retractable cylinder 2 includes: a roller body 23, a transition plate 24 and a bearing group 25. The end of the roller body 23 close to the clutch assembly 5 is recessed inward to form a receiving space for the clutch assembly 5. The transition plate 24 is connected to the end of the roller body 23 close to the clutch assembly 5, and the engaging hole 22 is provided in the transition plate 24 and / or the roller body 23. The bearing group 25 is arranged on both sides of the roller body 23 and sleeved on the outer periphery of the first rotating shaft 21.

[0109] The transition plate 24 includes but is not limited to nylon material and is installed on the roller body 23 by flat head screws. The end surface of the transition plate 24 close to the clutch assembly 5 can be slidably matched with the spherical surface of the universal ball head 531 of the clutch shaft 53.

[0110] The bearing group 25 includes but is not limited to rolling bearings. Both sides of the first rotating shaft 21 are installed at the center of the drum body 23 through the rolling bearing group 25. The first rotating shaft 21 can always rotate relative to the drum body 23.

[0111] In this embodiment, the end of the roller body 23 is partially sunken inward to hide the clutch assembly 5 so as to save space. The transition plate 24 can protect the universal ball head 531, prevent the roller body 23 from wearing the universal ball head 531, and help to extend the service life.

[0112] refer to Figure 1 and Figure 2 In some embodiments, the retractable device further includes: a second bearing seat 82, a retaining ring 83 and a fixing seat 84. The second bearing seat 82 is mounted on the end of the support seat 1 away from the driving assembly 3, and the second bearing seat 82 is sleeved on the outer periphery of the first rotating shaft 21. The retaining ring 83 is arranged at the end of the first rotating shaft 21 away from the driving assembly 3 to play a limiting role.

[0113] The fixing seat 84 is mounted on one end of the supporting seat 1 close to the driving assembly 3 and is configured to support the driving assembly 3. The second bearing seat 82 includes but is not limited to a vertical bearing seat, and the second bearing seat 82 cooperates with the left end of the first rotating shaft 21, and the left end face cooperates with the right end face of the retaining ring 83 to play a limiting role.

[0114] The fixing seat 84 includes but is not limited to being fixed to the upper side of the support seat 1 by bolts, the driving assembly 3 includes but is not limited to being fixed to the fixing seat 84 by bolts, and the second bearing seat 82 includes but is not limited to being fixed to the right side of the motor fixing seat 84 by bolts and being coaxial with the output shaft 31 of the driving assembly.

[0115] In this embodiment, the retractable cylinder 2 cooperates with the second bearing seat 82 through the end of the first rotating shaft 21 away from the clutch assembly 5 to ensure that the retractable cylinder 2 can rotate freely. The end of the first rotating shaft 21 away from the clutch assembly 5 has a hole and a keyway inside, which can be connected to other retractable cylinders 2 to increase the cable storage capacity.

[0116] Fig. 8A is a partial schematic diagram of some embodiments of the retractable device in manual mode according to the present disclosure, Figure 8B is a partial schematic diagram of some embodiments of the retractable device according to the present disclosure, wherein the clutch shaft and the transition plate are close to each other. Figure 8C is a partial schematic diagram of some embodiments of the retractable device in the automatic mode according to the present disclosure, with reference to Figure 1~Figure 8C , the mode switching process in some embodiments is given below.

[0117] like Fig. 8A , the retractable device is in manual mode, the clutch assembly 5 is disengaged from the retractable cylinder 2, the clutch assembly 5 is located closer to the operating disk 7, and the external thread of the second connecting sleeve 51 is fully engaged with the internal thread of the first connecting sleeve 71. When the operating disk 7 is rotated, the first connecting sleeve 71 pushes the second connecting sleeve 51 out, and the clutch assembly 5 moves closer to the operating disk 7.

[0118] like Figure 8B , the clutch assembly is in a compressed state, the universal ball head 531 of the clutch assembly 5 and the head of the clutch shaft 53 do not enter the engagement hole 22 of the retractable tube 2, but are against the transition plate 24, the first clutch disk 52 moves closer to the retractable tube 2 relative to the second clutch disk 54, and the elastic member 56 is compressed. At this time, the drive assembly 3 can be directly opened to drive the second shaft 6, the operating disk 7 and the clutch assembly 5 to rotate synchronously, and the universal ball head 531 slides freely on the transition plate 24 until the universal ball head 531 and the head of the clutch shaft 53 enter the engagement hole 22 at the left end of the retractable tube 2, completing the docking of the clutch assembly 5 and the retractable tube 2.

[0119] At this time, the retractable device is in automatic mode. Figure 8C .

[0120] When the drive component 3 is turned off, the process of switching from manual mode to automatic mode only requires two steps:

[0121] 1. Rotate the operating ring 72 of the operating disk 7 to dock the clutch assembly 5 with the retractable cylinder 2;

[0122] 2. Turn on the drive component 3.

[0123] Switching from the automatic mode to the manual mode requires only one step: rotating the operating ring 72 of the operating dial 7 in the reverse direction.

[0124] refer to Figure 1~Figure 8C In another aspect of the embodiments of the present disclosure, an engineering vehicle is provided, including a retracting and releasing device as described in any of the above embodiments. The engineering vehicle includes but is not limited to emergency rescue vehicles, cable laying vehicles, drainage vehicles, etc., and can be used in factories, outdoor scenes, etc.

[0125] In this embodiment, the cable winch and the drive assembly 3 are quickly disengaged and engaged through the retracting device, the cable winch and the motor / electric motor require fewer steps to disengage and engage, the mode switching speed is fast, the efficiency is high, it is more stable, has a long service life, and has low maintenance costs.

[0126] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0127] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A retractable device, characterized in that: include: Support seat (1); The retractable drum (2) has a first rotating shaft (21), the first rotating shaft (21) is mounted on the support seat (1), and the retractable drum (2) is configured to rotate around the first rotating shaft (21) to recycle or release the wound object; A driving assembly (3) is mounted on the support seat (1) and is located on one side of the retractable cylinder (2); an output shaft (31) of the driving assembly is colinear with the first rotating shaft (21); A switching assembly (4) is disposed between the retractable cylinder (2) and the drive assembly (3) and is connected to an output shaft (31) of the drive assembly; and A clutch assembly (5) is arranged on a side of the retractable cylinder (2) close to the switching assembly (4), is operably connected to the switching assembly (4), and is coaxially arranged with the retractable cylinder (2). The clutch assembly (5) is configured to approach or move away from the retractable cylinder (2) as the switching assembly (4) rotates, so as to engage with or disengage from the retractable cylinder (2).

2. The retractable device according to claim 1, characterized in that: The switching component (4) comprises: a second rotating shaft (6) connected to the output shaft (31) of the driving assembly and the first rotating shaft (21) respectively; and An operating disk (7) sleeved on the second rotating shaft (6), the center of the operating disk (7) having a hollow first connecting sleeve (71); The clutch assembly (5) comprises a hollow second connecting sleeve (51), the second connecting sleeve (51) being sleeved on the second rotating shaft (6), and the outer periphery of the second connecting sleeve (51) being threadedly connected to the inner wall of the first connecting sleeve (71), so that the clutch assembly (5) moves axially on the second rotating shaft (6) as the operating disk (7) rotates.

3. The retractable device according to claim 2, characterized in that: The clutch assembly (5) further comprises: a first clutch disc (52), wherein the second connecting sleeve (51) is arranged at the center of the first clutch disc (52); and A clutch shaft (53) is inserted through the first clutch disc (52), the axial direction of the clutch shaft (53) is parallel to the first rotating shaft (21), and the end of the clutch shaft (53) close to the retractable cylinder (2) is spherical; The end of the retractable cylinder (2) is provided with a coupling hole (22), and the clutch shaft (53) is configured to approach the retractable cylinder (2) as the first clutch disk (52) approaches the retractable cylinder (2) and is inserted into the coupling hole (22) so as to transmit the output torque of the drive assembly (3) to the retractable cylinder (2), and to separate from the coupling hole (22) as the first clutch disk (52) moves away from the retractable cylinder (2).

4. The retractable device according to claim 3, characterized in that: The clutch assembly (5) further comprises: a second clutch disc (54) spaced apart from the first clutch disc (52) along the axial direction of the clutch shaft (53), the clutch shaft (53) passing between the first clutch disc (52) and the second clutch disc (54); and A hollow third connecting sleeve (55) is arranged at the center of the second clutch disc (54), and a key groove is provided on the inner wall of the third connecting sleeve (55); The second rotating shaft (6) has a first shaft section (61), the outer circumference of the first shaft section (61) is provided with a keyway that cooperates with the third connecting sleeve (55), and the third connecting sleeve (55) is sleeved on the outer circumference of the first shaft section (61).

5. The retractable device according to claim 4, characterized in that: The clutch assembly (5) further comprises: An elastic member (56) sleeved on the outer circumference of the clutch shaft (53); The elastic member (56) is configured to be in a compressed state as the clutch shaft (53) is separated from the retractable cylinder (2).

6. The retractable device according to claim 4, characterized in that: The clutch shafts (53) are multiple in number and are arranged at intervals along the circumference of the first clutch disc (52) and the second clutch disc (54).

7. The retractable device according to any one of claims 4 to 6, characterized in that: The second rotating shaft (6) further comprises: a second shaft section (62) adjacent to the first shaft section (61), the diameter of the second shaft section (62) being smaller than that of the first shaft section (61), the operating disc (7) and the first clutch disc (52) being sleeved on the second shaft section (62); and The third shaft segment (63) is located on a side of the second shaft segment (62) away from the first shaft segment (61), the third shaft segment (63) is sleeved on the outer circumference of the output shaft of the drive assembly (3), and the diameter of the third shaft segment (63) is smaller than the diameter of the second shaft segment (62).

8. The retractable device according to claim 7, characterized in that: The second rotating shaft (6) further comprises: a fourth shaft segment (64) connected between the second shaft segment (62) and the third shaft segment (63), wherein the diameter of the fourth shaft segment (64) is larger than the diameter of the third shaft segment (63) and smaller than the diameter of the second shaft segment (62); Wherein, the retractable device further comprises: A first bearing seat (81) is mounted on the support seat (1), the first bearing seat (81) is sleeved on the outer periphery of the third shaft segment (63) and abuts against the fourth shaft segment (64), and the end of the first connecting sleeve (71) close to the driving component (3) abuts between the first bearing seat (81) and the fourth shaft segment (64).

9. The retractable device according to claim 2, characterized in that: The operating panel (7) further comprises: an operating ring (72) coaxially arranged with the first connecting sleeve (71), the diameter of the operating ring (72) being greater than the diameter of the first connecting sleeve (71); and A plurality of reinforcing members (73) are connected between the operating ring (72) and the first connecting sleeve (71), and are arranged at intervals along the circumference of the operating ring (72).

10. The retractable device according to claim 2, characterized in that: The retractable cylinder (2) comprises: A roller body (23), wherein one end of the roller body (23) close to the clutch assembly (5) is recessed inwardly so as to form an accommodating space for accommodating the clutch assembly (5); a transition plate (24) connected to one end of the roller body (23) close to the clutch assembly (5), the engaging hole (22) being formed in the transition plate (24); and The bearing group (25) is arranged on both sides of the roller body (23) and is sleeved on the outer circumference of the first rotating shaft (21).

11. The retractable device according to claim 10, characterized in that: Also includes: A second bearing seat (82) is mounted on an end of the support seat (1) away from the driving assembly (3), and the second bearing seat (82) is sleeved on the outer circumference of the first rotating shaft (21); a retaining ring (83) disposed at an end of the first rotating shaft (21) away from the driving assembly (3); and A fixing seat (84) is mounted on one end of the supporting seat (1) close to the driving assembly (3), and is configured to support the driving assembly (3).

12. An engineering vehicle, characterized in that: include: The retractable device as claimed in any one of claims 1 to 11.

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