Hydraulic rotating clutch device for fire water monitor

Abstract

A hydraulic rotating clutch device for a fire water monitor comprises a worm and gear mechanism, a gear box is arranged on a worm shell of the worm and gear mechanism, and a gear assembly is arranged in the gear box. A hydraulic motor is mounted on the side surface of the gearbox, a hand wheel is mounted on the opposite side surface of the gearbox, a driving shaft of the hydraulic motor extends into the gearbox, a first bevel gear is arranged on the driving shaft, a mounting shaft of the hand wheel extends into the gearbox, and a transition gear and a second bevel gear are arranged on the mounting shaft; a clutch assembly is arranged on the end face of the gearbox. In the utility model, in a normal working state, the clutch component is simultaneously in meshed connection with the first bevel gear and the second bevel gear, the hydraulic motor works, the hand wheel rotates in a linkage manner, the hand wheel cannot be manually operated, and when the hydraulic motor is blocked and suffocated due to high pressure of an oil way and cannot rotate, the clutch component is pulled outwards and is rotationally fixed; the clutch assembly is separated from the first bevel gear and the second bevel gear at the same time, and the worm and gear mechanism is driven through the hand wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting water cannons, in particular to a hydraulic rotating clutch device for fire-fighting water cannons. Background Art

[0002] Fire monitor is a fire-fighting device that uses water as a medium to extinguish fires at a long distance. Its pitch adjustment or horizontal adjustment is mainly achieved through a worm gear mechanism, and the worm gear mechanism is driven by a hydraulic motor or a handwheel, wherein the handwheel is fixedly mounted on the actuator end of the hydraulic motor.

[0003] In the existing fire water cannon, when the hydraulic motor is stuck and cannot rotate due to the high pressure of the oil circuit, the worm gear mechanism cannot be driven by the hand wheel, which makes fire fighting and maintenance very unfavorable. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a hydraulic rotary clutch device for a fire water cannon. When the hydraulic motor is stuck and cannot rotate due to high pressure in the oil circuit, the worm gear mechanism can be driven alone by a handwheel.

[0005] A hydraulic rotary clutch device for a fire-fighting water monitor comprises a worm gear mechanism arranged on a fire-fighting monitor body, a worm housing of the worm gear mechanism is provided with a gear box, and a gear assembly is provided in the gear box;

[0006] A hydraulic motor is installed on the side surface of the gear box close to the worm, and a hand wheel is installed on the opposite side surface. The driving shaft of the hydraulic motor extends into the gear box, and a first bevel gear is provided on the driving shaft. The mounting shaft of the hand wheel extends into the gear box, and a transition gear and a second bevel gear are provided on the mounting shaft. The transition gear is meshed and connected with the gear assembly, and the second bevel gear is close to the first bevel gear. The mounting shaft and the driving shaft are concentric and do not contact.

[0007] A clutch assembly is provided on the end surface of the gear box away from the worm gear, and the inner end of the clutch assembly is located in the gear box and is meshed with the first bevel gear and the second bevel gear at the same time. When the hydraulic motor cannot rotate, the clutch assembly is pulled outward and rotated to be fixed, so that the clutch assembly is disengaged from the first bevel gear and the second bevel gear at the same time, and the worm gear mechanism is driven by the hand wheel.

[0008] Compared with the prior art, in the utility model, under normal working conditions, the clutch assembly is meshed and connected with the first bevel gear and the second bevel gear at the same time, the hydraulic motor works, the handwheel rotates in conjunction, and the handwheel cannot be manually operated. When the hydraulic motor is stuck and cannot rotate due to the high pressure in the oil circuit, the clutch assembly is pulled outward and rotated to be fixed, so that the clutch assembly is disengaged from the first bevel gear and the second bevel gear at the same time, and the worm gear mechanism is driven by the handwheel.

[0009] Further, the clutch assembly includes a clutch housing provided on the gear box, and a clutch shaft provided on the clutch housing, the clutch shaft can rotate and slide on the clutch housing, the inner end of the clutch shaft is located in the gear box, the clutch shaft is provided with a third bevel gear, and the third bevel gear is meshed and connected with the first bevel gear and the second bevel gear at the same time;

[0010] A push-pull assembly is provided on the clutch housing and is fixedly connected to the outer end of the clutch shaft. When the hydraulic motor cannot rotate, the push-pull assembly is pulled outward and rotated and fixed, so that the third bevel gear is disengaged from the first bevel gear and the second bevel gear at the same time, and the worm gear mechanism is driven by the hand wheel.

[0011] Further, the push-pull assembly comprises a push-pull housing mounted on the clutch housing, a limit ring provided at the end of the push-pull housing, and a push-pull rod passing through the limit ring;

[0012] The end of the limiting ring is provided with a disengagement slot, and the side wall is provided with a closing slot, the closing slot and the disengagement slot are staggered in position and penetrate the end of the limiting ring;

[0013] The inner end of the push-pull rod is fixedly connected to the clutch shaft through a connecting assembly, and a handle is installed on the outer end;

[0014] A pin is provided on the outer wall of the push-pull rod, and the pin is located in the closing slot. When the hydraulic motor cannot rotate, the push-pull rod is pulled outward and rotated to move the pin from the closing slot to the disengaging slot.

[0015] Furthermore, a locking hole is provided on the side wall of the limiting ring, and a fastening screw is provided in the locking hole.

[0016] Further, the connecting assembly includes a connecting block connected to the push-pull rod, a clamping block fixed to the end of the clutch shaft by a connecting screw, and a connecting bearing provided on the clutch shaft;

[0017] The connecting bearing is located between the connecting block and the clamping block, and is in interference fit with the clutch shaft.

[0018] Furthermore, at least two clutch bearings are provided in the clutch housing, and there is a clearance fit between the clutch bearings and the clutch shaft.

[0019] Further, the gear assembly includes a gear shaft disposed in the gear box, a first gear and a second gear disposed on the gear shaft, and a third gear disposed on the worm;

[0020] The first gear is meshed and connected with the transition gear, and the second gear is meshed and connected with the third gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a hydraulic rotating clutch device for a fire-fighting water monitor in the utility model;

[0022] Figure 2 for Figure 1 An exploded view of a hydraulic rotary clutch device for a fire monitor;

[0023] Figure 3 for Figure 1 A schematic diagram of the clutch assembly in a closed state;

[0024] Figure 4 for Figure 1 A schematic diagram of the clutch assembly in a disengaged state;

[0025] Figure 5 for Figure 1 Schematic diagram of the partial structure of the middle and outer pull components.

[0026] Description of main component symbols:

[0027]

[0028]

[0029] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0031] See also Figures 1 to 4, a hydraulic rotary clutch device for a fire-fighting water monitor provided in one embodiment of the utility model comprises a worm gear mechanism 10 arranged on a fire-fighting monitor body, a gear box 11 is arranged on a worm housing of the worm gear mechanism 10, and a gear assembly 12 is arranged in the gear box 11;

[0032] A hydraulic motor 13 is installed on the side surface of the gear box 11 close to the worm, and a hand wheel 14 is installed on the opposite side surface. The driving shaft of the hydraulic motor 13 extends into the gear box 11, and a first bevel gear 131 is provided on the driving shaft. The mounting shaft of the hand wheel 14 extends into the gear box 11, and a transition gear 141 and a second bevel gear 142 are provided on the mounting shaft. The transition gear 141 is meshed and connected with the gear assembly 12, and the second bevel gear 142 is close to the first bevel gear 131. The mounting shaft and the driving shaft are concentric and do not contact.

[0033] A clutch assembly 15 is disposed on the end surface of the gear box 11 away from the worm gear. The inner end of the clutch assembly 15 is located in the gear box 11 and is meshed with the first bevel gear 131 and the second bevel gear 142 .

[0034] It should be noted that in the present invention, in the normal working state (the product has been adjusted to the working state of the hydraulic motor 13 when it leaves the factory, that is, the closed state, Figure 3 ), the clutch assembly 15 is meshed and connected with the first bevel gear 131 and the second bevel gear 142 at the same time, the hydraulic motor 13 works, the hand wheel 14 rotates in conjunction, and the hand wheel 14 cannot be manually operated; when the hydraulic motor 13 is stuck and suffocated due to the high pressure of the oil circuit and cannot rotate, the clutch assembly 15 is pulled outward and rotated to be fixed, so that the clutch assembly 15 is disengaged from the first bevel gear 131 and the second bevel gear 142 at the same time (disengaged state, Figure 4 In this state, the fire cannon body will not rotate even when the hydraulic motor 13 is working), and the worm gear mechanism 10 is driven by the hand wheel 14 to adjust the rotation of the fire cannon body.

[0035] See also Figures 2 to 4 The clutch assembly 15 includes a clutch housing 151 disposed on the gear box 11, and a clutch shaft 152 disposed on the clutch housing 151, wherein the clutch shaft 152 can rotate and slide on the clutch housing 151, and the inner end of the clutch shaft 152 is located in the gear box 11, and a third bevel gear 153 is disposed on the clutch shaft 152, and the third bevel gear 153 is meshed and connected with the first bevel gear 131 and the second bevel gear 142 at the same time;

[0036] The clutch housing 151 is provided with a push-pull assembly 16, which is fixedly connected to the outer end of the clutch shaft 152. When the hydraulic motor 13 cannot rotate, the push-pull assembly 16 is pulled outward and rotated and fixed, so that the third bevel gear 153 is disengaged from the first bevel gear 131 and the second bevel gear 142 at the same time, and the worm gear mechanism 10 is driven through the hand wheel 14.

[0037] It should be noted that in the present invention, in normal working state (closed state, Figure 3 ), the third bevel gear 153 is meshed with the first bevel gear 131 and the second bevel gear 142 at the same time, the hydraulic motor 13 works, the hand wheel 14 rotates in conjunction, and the hand wheel 14 cannot be manually operated; when the hydraulic motor 13 is stuck and suffocated due to the high pressure in the oil circuit and cannot rotate, the push-pull assembly 16 is pulled outward and rotated to fix it, so that the third bevel gear 153 is disengaged from the first bevel gear 131 and the second bevel gear 142 at the same time (disengaged state, Figure 4 ), and drives the worm gear mechanism 10 through the hand wheel 14, so as to adjust the rotation of the fire cannon body.

[0038] See also Figures 2 to 5 The push-pull assembly 16 includes a push-pull housing 161 mounted on the clutch housing 151, a limit ring 162 disposed at the end of the push-pull housing 161, and a push-pull rod 163 passing through the limit ring 162;

[0039] The end of the limiting ring 162 is provided with a disengagement slot 1621, and the side wall is provided with a closing slot 1622, the closing slot 1622 is staggered from the disengagement slot 1621 and passes through the end of the limiting ring 162;

[0040] The inner end of the push-pull rod 163 is fixedly connected to the clutch shaft 152 through a connecting assembly 17, and a handle 18 is installed on the outer end;

[0041] A pin 1631 is disposed on the outer wall of the push-pull rod 163, and the pin 1631 is located in the closing slot 1622 (in the closed state, Figure 3 ), when the hydraulic motor 13 cannot rotate, the push-pull rod 163 is pulled outward and rotated, so that the pin 1631 moves from the closing slot 1622 to the disengaging slot 1621 (disengaged state, Figure 4 ).

[0042] See also Figure 5The side wall of the limiting ring 162 is provided with a locking hole 1623, and a fastening screw 19 is provided in the locking hole 1623. The fastening screw 19 can prevent the push-pull rod 163 from moving left and right, and prevent the pin 1631 from being disengaged from the closing slot 1622 or the disengaging slot 1621.

[0043] See also Figure 3 and Figure 4 , the connecting assembly 17 includes a connecting block 171 connected to the push-pull rod 163, a clamping block 173 fixed to the end of the clutch shaft 152 by a connecting screw 172, and a connecting bearing provided on the clutch shaft 152;

[0044] The connecting bearing is located between the connecting block 171 and the clamping block 173 , and is in interference fit with the clutch shaft 152 to improve connection stability.

[0045] See also Figure 3 and Figure 4 At least two clutch bearings are provided in the clutch housing 151, and there is a clearance fit between the clutch bearings and the clutch shaft 152, so that the clutch shaft 152 slides left and right under the drive of the push-pull rod 163. By providing at least two clutch bearings, the stability can be improved and the clutch shaft 152 can be prevented from swinging during the sliding process.

[0046] See also Figure 3 and Figure 4 The gear assembly 12 includes a gear shaft 121 disposed in the gear box 11, a first gear 122 and a second gear 123 disposed on the gear shaft 121, and a third gear 124 disposed on the worm;

[0047] The first gear 122 is meshed and connected with the transition gear 141 , and the second gear 123 is meshed and connected with the third gear 124 .

[0048] Specifically, the steps for adjusting the working state (closed state) of the hydraulic motor 13 are as follows:

[0049] 1. Loosen the fastening screw 19 counterclockwise;

[0050] 2. Pull the handle 18 out to the bottom, so that the pin 1631 is disengaged from the disengagement slot 1621, turn the handle 18 clockwise or counterclockwise to make the pin 1631 follow the straight groove to the bottom, then turn the handle 18 clockwise to make the pin 1631 snap into the bottom to close the slot 1622, and tighten the fixing screw 19 clockwise. Figure 3 .

[0051] Specifically, the manual operation state (disengagement state) adjustment steps:

[0052] 1. Loosen the fastening screw 19 counterclockwise;

[0053] 2. Turn the handle 18 counterclockwise until the pin 1631 disengages from the closing slot 1622, pull it out to the bottom and then turn it clockwise or counterclockwise until the pin 1631 is stuck in the disengagement slot 1621, and tighten the fastening screw 19 clockwise. Figure 4 .

[0054] In summary, the utility model has a compact overall structure, flexible and reliable clutch, and simple operation. Specifically, under normal working conditions, the hydraulic motor 13 works, the hand wheel 14 rotates in conjunction, and the hand wheel 14 cannot be manually operated; when the hydraulic motor 13 is stuck and suffocated due to the high pressure in the oil circuit and cannot rotate, the pin 1631 is turned from the closing slot 1622 to the disengaging slot 1621, so that the third bevel gear 153 is disengaged from the first bevel gear 131 and the second bevel gear 142 at the same time, and the worm gear mechanism is driven by the hand wheel 14, so as to adjust the rotation of the fire cannon body.

[0055] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above-mentioned embodiments only express several implementation methods of the utility model, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several deformations and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hydraulic rotary clutch device for a fire-fighting water monitor, comprising a worm gear mechanism provided on a fire-fighting monitor body, characterized in that: A gear box is provided on the worm housing of the worm gear mechanism, and a gear assembly is provided in the gear box; A hydraulic motor is installed on the side surface of the gear box close to the worm, and a hand wheel is installed on the opposite side surface. The driving shaft of the hydraulic motor extends into the gear box, and a first bevel gear is provided on the driving shaft. The mounting shaft of the hand wheel extends into the gear box, and a transition gear and a second bevel gear are provided on the mounting shaft. The transition gear is meshed and connected with the gear assembly, and the second bevel gear is close to the first bevel gear. The mounting shaft and the driving shaft are concentric and do not contact. A clutch assembly is provided on the end surface of the gear box away from the worm gear, and the inner end of the clutch assembly is located in the gear box and is meshed with the first bevel gear and the second bevel gear at the same time. When the hydraulic motor cannot rotate, the clutch assembly is pulled outward and rotated to be fixed, so that the clutch assembly is disengaged from the first bevel gear and the second bevel gear at the same time, and the worm gear mechanism is driven by the hand wheel.

2. The hydraulic rotary clutch device for fire-fighting water monitor according to claim 1, characterized in that: The clutch assembly includes a clutch housing provided on the gear box, and a clutch shaft provided on the clutch housing, wherein the clutch shaft can rotate and slide on the clutch housing, wherein the inner end of the clutch shaft is located in the gear box, and a third bevel gear is provided on the clutch shaft, wherein the third bevel gear is meshed and connected with the first bevel gear and the second bevel gear at the same time; A push-pull assembly is provided on the clutch housing and is fixedly connected to the outer end of the clutch shaft. When the hydraulic motor cannot rotate, the push-pull assembly is pulled outward and rotated and fixed, so that the third bevel gear is disengaged from the first bevel gear and the second bevel gear at the same time, and the worm gear mechanism is driven by the hand wheel.

3. The hydraulic rotary clutch device for fire-fighting water monitor according to claim 2, characterized in that: The push-pull assembly comprises a push-pull housing mounted on the clutch housing, a limit ring arranged at the end of the push-pull housing, and a push-pull rod passing through the limit ring; The end of the limiting ring is provided with a disengagement slot, and the side wall is provided with a closing slot, the closing slot and the disengagement slot are staggered in position and penetrate the end of the limiting ring; The inner end of the push-pull rod is fixedly connected to the clutch shaft through a connecting assembly, and a handle is installed on the outer end; A pin is provided on the outer wall of the push-pull rod, and the pin is located in the closing slot. When the hydraulic motor cannot rotate, the push-pull rod is pulled outward and rotated to move the pin from the closing slot to the disengaging slot.

4. The hydraulic rotary clutch device for fire-fighting water monitor according to claim 3, characterized in that: The side wall of the limiting ring is provided with an anti-loosening hole, and a fastening screw is provided in the anti-loosening hole.

5. The hydraulic rotary clutch device for fire-fighting water monitor according to claim 3, characterized in that: The connecting assembly includes a connecting block connected to the push-pull rod, a clamping block fixed to the end of the clutch shaft by a connecting screw, and a connecting bearing provided on the clutch shaft; The connecting bearing is located between the connecting block and the clamping block, and is in interference fit with the clutch shaft.

6. The hydraulic rotary clutch device for fire-fighting water monitor according to claim 2, characterized in that: At least two clutch bearings are arranged in the clutch housing, and there is a clearance fit between the clutch bearings and the clutch shaft.

7. The hydraulic rotary clutch device for fire-fighting water monitor according to any one of claims 1 to 5, characterized in that: The gear assembly includes a gear shaft disposed in the gear box, a first gear and a second gear disposed on the gear shaft, and a third gear disposed on the worm; The first gear is meshed and connected with the transition gear, and the second gear is meshed and connected with the third gear.

Images