A nozzle assembly device

Abstract

The present invention discloses a nozzle assembly device, comprising: a fixing part, which is used to limit the movement of locking sleeves of different specifications; a torque part, which includes a rotor that rotates a clamping base; the lower part of the rotor center is connected to the output end of the output shaft in the transmission through a rotating shaft; the input end of the input shaft in the transmission is connected to the torque motor. The input shaft of the transmission is provided with a first driving gear and a second driving gear that can rotate freely relative to the input shaft; the input shaft is provided with a shifting gear that connects the first driving gear or the second driving gear to the input shaft; the output shaft is fixed with: a first passive gear meshing with the first driving gear, and a second passive gear meshing with the second driving gear. The present invention obtains two modes of low speed and high torque and high speed and low torque through the cooperation of the torque motor, the transmission and the support sleeve, and realizes the assembly of nozzles of different specifications through the switching of these two modes, freeing manpower and ensuring the stability of the torque.

Description

Technical Field

[0001] The invention relates to the field of assembly devices, and in particular to a nozzle assembly device. Background Art

[0002] Coal mine dust not only poses a serious threat to the health of underground workers, but also has a strong explosiveness, which will also affect the safe production of coal mines. Therefore, underground dust prevention measures must be taken. Foam dust removal technology is a widely used coal mine dust prevention technology. It mainly uses the method of spraying to spray dust reduction liquid to cover the dust source. In response to this, a patent with the publication number of CN 204564373 U was developed, and the patent name is: A foam dust reduction nozzle with arc-shaped spray and adjustable angle. The annular groove is a spring gasket with very large elasticity, which can play a very large elastic anti-loosening role. In addition, the U-shaped card inserted through it not only realizes fixation and limitation, but also realizes the role of sealing the spherical nozzle with a female joint (ie: base 11).

[0003] In actual use, this type of device has a very stable structure, but in order to obtain sufficient elastic force, the spring gasket used is a larger model, which makes the elastic pressure also very large; therefore, during installation and assembly, one end of the nozzle needs to be fixed manually (usually fixed with a bench vise or other device), and the other end needs to be tightened with a wrench. The entire process is manual operation. Since nozzles of different sizes need to be produced, if batch assembly of nozzles is required, the manual operation intensity is very high. In addition, the torque cannot be well controlled during manual operation, so too loose torque will make the spherical nozzle leak easily, while too tight torque will keep the spherical nozzle in a tensioned state at all times, which is easy to damage.

[0004] Therefore, in order to reduce the workload of manual labor in the process of assembling the nozzle and ensure the quality of assembly, a new solution is proposed. Summary of the invention

[0005] In order to solve 1. the problem that the manual method of assembling the nozzles is particularly prone to fatigue due to the need to produce nozzles of different specifications and to assemble them in batches; and 2. the problem that the nozzles of different specifications cannot maintain a constant torque after being installed in batches, the present invention provides a nozzle assembly device.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A nozzle assembly device comprises: a fixing part, which is used to limit the movement of locking sleeves of different specifications; a torque part, which comprises a rotor that rotates a clamping base; the lower part of the rotor center is transmission-connected to the output end of the output shaft in the transmission through a rotating shaft; the input end of the input shaft in the transmission is transmission-connected to the torque motor.

[0008] The input shaft of the transmission is provided with a first driving gear and a second driving gear that are free to rotate relative to the input shaft in sequence; the input shaft is provided with a shifting tooth that transmission-connects the first driving gear or the second driving gear to the input shaft; the shifting tooth linearly reciprocates relative to the input shaft, and both sides of the shifting tooth are in sliding contact with the first driving gear and the second driving gear respectively through springs.

[0009] The output shaft is fixed in sequence with: a first passive gear meshing with the first driving gear, and a second passive gear meshing with the second driving gear.

[0010] Furthermore, the fixing part includes a support platform, on which the support frame is vertically fixed, and the support frame is connected to the support plate through a detachable limit lock; the limit lock is a nut, and the nut is threadedly connected to the support frame; a large hole matching the outer contour of the large-sized locking sleeve is opened on the support plate; the support sleeve is detachably connected in the large hole; the inner contour of the support sleeve is adapted to the outer contour of the small-sized locking sleeve. The support sleeve is provided with a through crack. The center of the support sleeve is a through hole structure, and a boss is provided on the outside of the support sleeve, and the outer edge of the boss is larger than the edge of the large hole.

[0011] Wherein, an input wheel is fixed on the input shaft, and the input wheel is drivingly connected to the output end of the torque motor.

[0012] When the shifting gear is in transmission connection, both sides of the shifting gear are provided with bayonet pins; the sides of the first driving gear and the second driving gear are provided with pin holes; the bayonet pins are matched and connected with the pin holes.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the present invention obtains two modes of low speed and high torque and high speed and low torque through the cooperation of the torque motor, the transmission and the support sleeve, and realizes the assembly of nozzles of different specifications through the switching of these two modes, liberating manpower and ensuring the stability of torque. At the same time, the mutual integration of the two modes further improves the installation efficiency of large-size nozzles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the nozzle structure;

[0015] Figure 2 It is a schematic diagram of the structure of the present invention;

[0016] Figure 3 is a schematic diagram of the transmission structure;

[0017] Figure 4 is a schematic diagram of the support plate structure;

[0018] Figure 5 is a schematic diagram of the support sleeve structure;

[0019] Figure 6 for Figure 5 Sectional view of AA.

[0020] In the figure, 11 is a base, 12 is an elastic washer, 13 is a locking sleeve, 14 is a spherical nozzle, 2 is a support platform, 3 is a support frame, 31 is a limit lock, 4 is a support plate, 41 is a support sleeve, 42 is a boss, 5 is a rotor, 6 is a rotating shaft, 7 is a transmission, 71 is an input shaft, 72 is an output shaft, 73 is an input wheel, 74 is a first driving gear, 75 is a second driving gear, 76 is a first passive gear, 77 is a second passive gear, 78 is a shifting gear, 78 is a spring, and 8 is a torque motor. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, the base 11 and the locking sleeve 13 are threadedly connected, and the spherical nozzle 14 is squeezed at the top of the base 11, and the spherical nozzle 14 is fixed and sealed by squeezing; in order to better achieve fixation and sealing, and to obtain better assembly quality, the base 11 or the end of the base 11 in contact with the spherical nozzle 14 can generally be made of soft materials, such as pure copper. An elastic gasket 12 is strung between the base 11 and the locking sleeve 13, and the elasticity of the elastic gasket 12 is used to prevent the end of the base 11 from separating from the spherical nozzle 14. It can also be limited by a U-shaped card as described in the publication number: CN 204564373 U, patent name: A foam dust suppression nozzle with arc-shaped spraying and adjustable angle.

[0023] In order to solve the drawbacks of manual assembly, the present invention adopts a special nozzle assembly device. The details are as follows:

[0024] A nozzle assembly device includes: a fixing part, mainly used for fixing and keeping the nozzle in a stationary state; at the same time, the fixing part is used to limit the movement of locking sleeves 13 of different specifications; because there are different actual needs on site, the locking sleeves 13 mainly have large specifications and small specifications. The large-sized locking sleeves 13 need to be assembled with a larger torque, while the small-sized locking sleeves 13 can only be assembled with a very small torque.

[0025] This scheme also includes a torque unit, which is mainly used to provide torque to the base 11 for assembly or disassembly. The torque unit includes a rotor 5 that clamps the base 11 for rotation; the lower center of the rotor 5 is connected to the output end of the output shaft 72 in the transmission 7 through a rotating shaft 6; the input end of the input shaft 71 in the transmission 7 is connected to the torque motor 8. The specific implementation is: an input wheel 73 is fixed on the input shaft 71, and the input wheel 73 is connected to the output end of the torque motor 8. The working state is: the torque motor 8 drives the transmission 7 to allow the rotor 5 to provide torque to the base 11 to achieve assembly; the rotor 5 is generally a chuck. The torque finally applied to the locking sleeve 13 is completed by the locking sleeve 13, the torque motor 8 and the transmission 7. The transmission 7 not only plays the role of speed change, but is also mainly used to change the output torque.

[0026] The transmission 7 structure can be as follows Figure 3 As shown, the input shaft 71 of the transmission 7 is provided with a first driving gear 74 and a second driving gear 75 which are free to rotate relative to the input shaft 71 in sequence; the input shaft 71 is provided with a shifting tooth 78 which transmits the first driving gear 74 or the second driving gear 75 to the input shaft 71; the shifting tooth 78 is used to provide a transmission torque to the first driving gear 74 or the second driving gear 75. The difference between the two is: 1. Under the condition of the same torque of the input shaft 71, the force exerted by the input shaft 71 on the tooth end of the second driving gear 75 is greater than the force exerted on the tooth end of the first driving gear 74. 2. Under the condition of a certain distance between the input shaft 71 and the output shaft 72, the diameter of the first driving gear 74 is greater than that of the second driving gear 75, so that the first driving gear 74 can transmit a faster rotation speed than the second driving gear 75.

[0027] In a specific implementation, both sides of the shifting tooth 78 are provided with a bayonet; the first driving gear 74 and the second driving gear 75 are provided with a pin hole on their sides; the bayonet is connected with the pin hole in cooperation. Power transmission is achieved through this bayonet connection. The shifting tooth 78 slides back and forth linearly relative to the input shaft 71, and both sides of the shifting tooth 78 are in sliding contact with the first driving gear 74 and the second driving gear 75 respectively through springs 781. In a specific implementation, the shifting tooth 78 can be a spline shaft structure similar to a spline with the input shaft 71. The spring 781 is used to prevent the high-speed rotating shifting tooth 78 from impacting the first driving gear 74 or the second driving gear 75.

[0028] The output shaft 72 is fixed in sequence with: a first passive gear 76 meshing with the first driving gear 74, and a second passive gear 77 meshing with the second driving gear 75. When the distance between the input shaft 71 and the output shaft 72 is constant, the result of the transmission is: the first passive gear 76 obtains a lower torque and a higher speed, and the second passive gear 77 obtains a higher torque and a lower speed.

[0029] In a specific implementation, the specific structure of the fixing part is as follows: Figure 2 Shown and Figure 4 As shown, it includes a support platform 2, on which a support frame 3 is vertically fixed, and the support frame 3 is connected to the support plate 4 through a detachable limit lock 31, and the limit lock 31 is used to adjust the upper and lower heights to adapt to the position of a large or small size locking sleeve 13. Specifically, the limit lock 31 can be a nut, and the nut is threadedly connected to the support frame 3. The nuts are tightened on the upper and lower sides of the support plate 4 to play a fixing and limiting role.

[0030] like Figure 4 As shown, the support plate 4 is provided with a large hole that matches the outer contour of the large-sized locking sleeve 13; Figure 5 and Figure 6 As shown, a support sleeve 41 is detachably connected in the large hole; the inner contour of the support sleeve 41 is adapted to the outer contour of the small-sized locking sleeve 13. When the support sleeve 41 is removed, it is mainly suitable for the large-sized locking sleeve 13; when the support sleeve 41 is installed, it is mainly suitable for the small-sized locking sleeve 13.

[0031] like Figure 5 As shown, the center of the support sleeve 41 is a through hole structure, and a boss 42 is provided on the outside of the support sleeve 41, and the outer edge of the boss 42 is larger than the edge of the large hole. The boss 42 is used to facilitate the installation and removal of the support sleeve 41.

[0032] In order to facilitate disassembly and installation, Figure 5 As shown, a through crack is provided on the support sleeve 41. By utilizing this slight elastic deformation, the support sleeve 41 can be easily inserted into the large hole; at the same time, after the rotor 5 moves, the locking sleeve 13 tightly fastened by the support sleeve 41 will utilize this clearance margin to install the locking sleeve 13 on the base 11 in a relatively gentle and stable manner. Specifically, in the intermittent tightening process, the locking sleeve 13 is not easily deformed due to the torque, and then clamped on the support sleeve 41.

[0033] Working principle:

[0034] The torque motor 8 outputs a certain torque through the frequency converter. When passing through the transmission 7, the selective operation of the shifting gear 78 will cause the rotation of the rotor 5 to have two conditions, namely: 1. Low-speed and high-torque rotation; 2. High-speed and low-torque rotation. Correspondingly, the large hole with low-speed and high-torque rotation directly presses the large-sized locking sleeve 13 against the elastic washer 12; while the high-speed and low-torque rotor 5, after the large hole is covered with the support sleeve 41, also exerts a small torque on the small-sized locking sleeve 13.

[0035] Steps:

[0036] First, the first driving gear 74 and the input shaft 71 are connected in transmission by using the shifting gear 78 .

[0037] For example, when assembling a small-sized locking sleeve 13 , the supporting sleeve 41 is inserted into the large hole of the supporting plate 4 , and then the torque motor 8 is started to complete the assembly of the small-sized locking sleeve 13 .

[0038] If a large-sized locking sleeve 13 is being assembled, the large-sized locking sleeve 13 is directly inserted into the large hole without installing the support sleeve 41, and initially tightened in a high-speed and low-torque state, and then the shifting gear 78 is adjusted to establish a transmission connection between the input shaft 71 and the second driving gear 75, and then the large-sized locking sleeve 13 is tightened into place again in a low-speed and high-torque mode.

[0039] The present invention is described above based on the embodiments and variations, but the embodiments of the above aspects are examples for facilitating the understanding of the present invention and are not intended to limit the present invention. Any variation, improvement, and equivalent substitution made within the spirit and principle of the present invention and the scope of the claims shall be included in the protection scope of the present invention. In addition, if the technical features are not described as indispensable in this specification, they may be appropriately deleted.

Claims

1. A nozzle assembly device, characterized in that: It comprises: a fixing portion, the fixing portion being used to limit the movement of locking sleeves (13) of different specifications; A torque portion, the torque portion comprising a rotor (5) that rotates on a clamping base (11); the rotor (5) is transmission-connected to the output end of an output shaft (72) in a transmission (7) through a rotating shaft (6) below the center; the input end of an input shaft (71) in the transmission (7) is transmission-connected to a torque motor (8); The input shaft (71) of the transmission (7) is provided with a first driving gear (74) and a second driving gear (75) which are free to rotate relative to the input shaft (71) in sequence. The input shaft (71) is provided with a shifting tooth (78) which transmission-connects the first driving gear (74) or the second driving gear (75) to the input shaft (71). The output shaft (72) is fixed in sequence with: a first passive gear (76) meshing with the first active gear (74), and a second passive gear (77) meshing with the second active gear (75); the fixing portion comprises a support platform (2), a support frame (3) is vertically fixed on the support platform (2), and the support frame (3) is connected to the support plate (4) via a detachable limit lock (31); a large hole matching the outer contour of the large-sized locking sleeve (13) is opened on the support plate (4); a support sleeve (41) is detachably connected in the large hole; the inner contour of the support sleeve (41) is adapted to the outer contour of the small-sized locking sleeve (13); the center of the support sleeve (41) is a through hole structure, and a boss (42) is provided on the outer side of the support sleeve (41), and the outer edge of the boss (42) is larger than the edge of the large hole; the limit lock (31) is a nut, and the nut is threadedly connected to the support frame (3); and a through crack is provided on the support sleeve (41).

2. The nozzle assembly device according to claim 1, characterized in that: The shifting tooth (78) slides linearly back and forth relative to the input shaft (71), and two sides of the shifting tooth (78) are in sliding contact with the first driving gear (74) and the second driving gear (75) respectively through springs (781).

3. The nozzle assembly device according to claim 1, characterized in that: An input wheel (73) is fixed on the input shaft (71), and the input wheel (73) is drivingly connected to the output end of the torque motor (8).

4. The nozzle assembly device according to claim 1, characterized in that: Both sides of the shifting tooth (78) are provided with a bayonet; the sides of the first driving gear (74) and the second driving gear (75) are provided with a pin hole; the bayonet is connected in cooperation with the pin hole.

5. The nozzle assembly device according to claim 1, characterized in that: The rotor (5) is a chuck.

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