Fire pump coupling structure

Abstract

The utility model relates to the technical field of fire-fighting accessories, in particular to a fire-fighting water pump coupler structure which comprises a first shaft sleeve used for being connected with an input shaft of a fire-fighting water pump and a second shaft sleeve connected to an output shaft of a motor. The first shaft sleeve and the second shaft sleeve are used for being connected with a fire pump input shaft and a motor output shaft respectively, and a connection foundation is provided for the whole coupler structure and external equipment; the connecting chuck plays a key role in connecting the first shaft sleeve and the second shaft sleeve, and four groups of shaft coupling clamping grooves which are uniformly and annularly arranged at equal intervals are formed in the outer wall of the connecting chuck, so that clamping positions are provided for the first clamping head and the second clamping head, and the stability and accuracy of connection are ensured; a locking screw hole formed in the center of the groove bottom of each coupling clamping groove is in threaded connection with a first locking bolt embedded in the outer wall of the first clamping head and the outer wall of the second clamping head, and the connection firmness is further enhanced; vibration and noise caused by infirm connection are reduced, and the working efficiency and reliability of the fire pump are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting accessories technical field, concretely is a fire pump coupling structure. BACKGROUND

[0002] The fire pump coupling as the key part of connecting the fire pump and motor plays a vital role in the fire fighting system. It not only can transmit the power generated by the motor, but also can bear the vibration and load change generated by the pump operation, ensuring the stable operation of the fire fighting system. The connection mode of the existing fire pump coupling may not be stable. The traditional coupling may adopt a single connection mode, such as key connection or flange connection, which is prone to looseness, displacement and other problems during long-term use, affecting the accuracy and stability of power transmission, and in addition, the installation and disassembly of the traditional coupling may be more complicated. SUMMARY

[0003] The utility model aims at providing a fire pump coupling structure to solve the problem of unstable connection mode of the existing fire pump coupling in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A fire pump coupling structure, comprising a first shaft sleeve for connecting the input shaft of the fire pump and a second shaft sleeve connected to the output shaft of the motor, a connecting chuck is provided between the first shaft sleeve and the second shaft sleeve;

[0006] Four groups of annularly arranged coupling clamping grooves are formed on the outer wall of the connecting chuck, and a locking screw hole is formed at the center of the bottom of each coupling clamping groove;

[0007] A first clamping head with a size matching that of the coupling clamping groove and clamped in cooperation is symmetrically arranged on the upper and lower sides of one end of the first shaft sleeve in contact with the connecting chuck, and a second clamping head with a size matching that of the coupling clamping groove and clamped in cooperation is symmetrically arranged on the upper and lower sides of one end of the second shaft sleeve in contact with the connecting chuck;

[0008] A first locking bolt with a size matching that of the locking screw hole and threadedly connected is embedded on the outer wall of the first clamping head and the second clamping head.

[0009] As a preferred, the outer diameter sizes of the first shaft sleeve, the second shaft sleeve and the connecting chuck are matched.

[0010] As a preferred, a second locking bolt connected with the shaft outside is embedded on the outer wall of the first shaft sleeve and the second shaft sleeve.

[0011] As preferred, a first shaft hole is coaxially arranged at the center of the first shaft sleeve and is matched with the cross-sectional dimension of the input shaft of the fire pump and is inserted with interference fit.

[0012] As preferred, a second shaft hole is coaxially arranged at the center of the second shaft sleeve and is matched with the cross-sectional dimension of the output shaft of the motor and is inserted with interference fit.

[0013] As preferred, wear-resistant layers are symmetrically arranged on the inner walls of the two sides of the shaft coupling slot.

[0014] As preferred, the wear-resistant layer is a wear-resistant rubber sleeve with a thickness of 1-3mm.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. In the fire pump coupling structure, the first shaft sleeve and the second shaft sleeve are arranged for connecting the input shaft of the fire pump and the output shaft of the motor respectively, providing a connection basis for the entire coupling structure and external equipment; the connecting chuck plays a key role in connecting the first shaft sleeve and the second shaft sleeve, and four groups of shaft coupling slots are evenly and equidistantly arranged in a ring shape on the outer wall of the connecting chuck, providing clamping positions for the first chuck and the second chuck, ensuring the stability and accuracy of the connection; the locking screw holes arranged at the center of the bottom of each shaft coupling slot are threadedly connected with the first locking bolts embedded on the outer wall of the first chuck and the second chuck, further enhancing the firmness of the connection; this structure design enables the fire pump coupling to stably transmit power during operation, reduces vibration and noise caused by unstable connection, and improves the working efficiency and reliability of the fire pump.

[0017] 2. In the fire pump coupling structure, the second locking bolts are embedded on the outer walls of the first shaft sleeve and the second shaft sleeve and are connected with the shafts outside, which can provide additional locking force when connected with the shafts outside, ensuring the firm connection between the shaft sleeves and the shafts, and preventing loosening or falling off caused by vibration or load change.

[0018] 3. In the fire pump coupling structure, wear-resistant layers are symmetrically arranged on the inner walls of the two sides of the shaft coupling slot, and the wear-resistant layer is a wear-resistant rubber sleeve, which can effectively reduce the friction and wear between the first chuck, the second chuck and the shaft coupling slot, prolong the service life of the coupling, and improve the stability and reliability of the connection. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification, and are used to make a further detailed explanation together with the embodiments of the present application, but do not constitute a limitation on the present application.

[0020] Fig. 1 is a schematic diagram of the exploded structure of the present application;

[0021] Fig. 2 It is a structural schematic view of the utility model;

[0022] Fig. 3 It is a structural schematic view of the utility model connecting chuck;

[0023] 10, first shaft sleeve;11, first clamp head;12, first shaft hole;13, second locking bolt;14, first locking bolt;

[0024] 20, second shaft sleeve;21, second clamp head;22, second shaft hole;

[0025] 30, connecting chuck;31, shaft joint slot;32, wear-resistant layer;33, locking screw hole. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the embodiments of the utility model and the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "vertical", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] A fire-fighting water pump shaft coupling structure, comprising a shaft coupling body, a shaft sleeve and a shaft hole, wherein Figs. 1-3As shown, including the first shaft sleeve 10 for connecting fire pump input shaft and connected to the second shaft sleeve 20 on the output shaft of the motor, the first shaft sleeve 10 and the second shaft sleeve 20 between the connecting chuck 30; the outer wall of the connecting chuck 30 is provided with four groups of uniform equidistant annular arrangement of shaft coupling slot 31, the center of each shaft coupling slot 31 is provided with locking screw hole 33; the first shaft sleeve 10 and the connecting chuck 30 contact one end of the upper and lower side of the first chuck head 11 is provided with the size of the shaft coupling slot 31 and the clamping fit, the second shaft sleeve 20 and the connecting chuck 30 contact one end of the upper and lower side of the second chuck head 21 is provided with the size of the shaft coupling slot 31 and the clamping fit; the outer wall of the first chuck head 11 and the second chuck head 21 is embedded with the first locking bolt 14 which is matched with the size of the locking screw hole 33 and is screwed, the first shaft sleeve 10 and the second shaft sleeve 20 are respectively used for connecting the fire pump input shaft and the motor output shaft, which provides the connection basis for the whole coupling structure and the external equipment; the connecting chuck 30 plays a key role in connecting the first shaft sleeve 10 and the second shaft sleeve 20, the four groups of uniform equidistant annular arrangement of shaft coupling slot 31 on the outer wall of the connecting chuck 30 provides the clamping position for the first chuck head 11 and the second chuck head 21, ensuring the stability and accuracy of the connection; the locking screw hole 33 at the center of the bottom of each shaft coupling slot 31 is screwed with the first locking bolt 14 embedded on the outer wall of the first chuck head 11 and the second chuck head 21, further strengthening the firmness of the connection; this structure design makes the fire pump coupling stably transmit power in the working process, reduces the vibration and noise caused by loose connection, and improves the working efficiency and reliability of the fire pump.

[0029] It is worth noting that the outer diameter of the first shaft sleeve 10, the second shaft sleeve 20 and the connecting chuck 30 is matched, so that they can be closely matched, reducing the gap at the connection, thereby improving the stability and reliability of the whole coupling.

[0030] Further, the outer wall of the first shaft sleeve 10 and the second shaft sleeve 20 is embedded with the second locking bolt 13 connected with the external shaft, which can provide additional locking force when connected with the external shaft, ensuring the firm connection between the shaft sleeve and the shaft, preventing loosening or falling off due to vibration or load change.

[0031] Specifically, the center of the first shaft sleeve 10 is coaxially provided with the first shaft hole 12 which is matched with the cross section size of the fire pump input shaft and is inserted with interference fit, so that the first shaft sleeve 10 can be closely fixed on the fire pump input shaft, improving the rigidity and stability of the connection, ensuring the normal operation of the water pump, the center of the second shaft sleeve 20 is coaxially provided with the second shaft hole 22 which is matched with the cross section size of the motor output shaft and is inserted with interference fit, so that the second shaft sleeve 20 can be closely fixed on the motor output shaft, also improving the rigidity and stability of the connection, ensuring that the power of the motor can be efficiently transmitted to the water pump.

[0032] In addition, the wear-resistant layer 32 is symmetrically arranged on the inner wall of both sides of the shaft coupling slot 31, the wear-resistant layer 32 is a wear-resistant rubber sleeve with a thickness of 1-3mm, which can effectively reduce the friction and wear between the first clamping head 11, the second clamping head 21 and the shaft coupling slot 31, prolong the service life of the shaft coupling, and improve the stability and reliability of the connection.

[0033] The working principle of the fire pump shaft coupling structure is as follows:

[0034] First, connect the first shaft sleeve 10 to the input shaft of the fire pump; the first clamping head 11 on the first shaft sleeve 10 corresponds to the shaft coupling slot 31 on the connecting chuck 30;

[0035] Then, connect the second shaft sleeve 20 to the output shaft of the motor; the second clamping head 21 on the second shaft sleeve 20 also corresponds to the shaft coupling slot 31 on the connecting chuck 30;

[0036] Then, the first clamping head 11 and the second clamping head 21 are respectively clamped into the shaft coupling slot 31 of the connecting chuck 30 to ensure accurate clamping;

[0037] Finally, use the first locking bolt 14 to screw it into the locking screw hole 33 at the center of the bottom of the shaft coupling slot 31, further fix the connection between the first shaft sleeve 10 and the second shaft sleeve 20 and the connecting chuck 30, complete the installation of the shaft coupling, and make it can stably transmit power when the fire pump works.

[0038] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fire pump coupling structure, comprising a first sleeve (10) for connecting the fire pump input shaft and a second sleeve (20) connected to the motor output shaft, characterized in that: A connecting chuck (30) is provided between the first sleeve (10) and the second sleeve (20); The outer wall of the connecting chuck (30) is provided with four groups of coupling slots (31) arranged evenly and equidistantly in an annular shape, and a locking screw hole (33) is provided at the center of the bottom of each coupling slot (31); The upper and lower sides of one end of the first sleeve (10) in contact with the connecting chuck (30) are symmetrically arranged on a first clamping head (11) that is adapted to the size of the coupling slot (31) and is engaged with the coupling; the upper and lower sides of one end of the second sleeve (20) in contact with the connecting chuck (30) are symmetrically arranged on a second clamping head (21) that is adapted to the size of the coupling slot (31) and is engaged with the coupling; A first locking bolt (14) that matches the size of the locking screw hole (33) and is threadedly connected is embedded on the outer walls of the first clamp (11) and the second clamp (21).

2. The fire pump coupling structure according to claim 1, characterized in that: The outer diameters of the first shaft sleeve (10), the second shaft sleeve (20) and the connecting chuck (30) are compatible.

3. The fire pump coupling structure according to claim 1, characterized in that: A second locking bolt (13) connected to the external rotating shaft is embedded on the outer walls of the first shaft sleeve (10) and the second shaft sleeve (20).

4. The fire pump coupling structure according to claim 1, characterized in that: A first shaft hole (12) is coaxially opened at the center of the first shaft sleeve (10), which is adapted to the cross-sectional size of the fire pump input shaft and has an interference fit.

5. The fire pump coupling structure according to claim 1, characterized in that: A second shaft hole (22) is coaxially opened at the center of the second shaft sleeve (20) and is adapted to the cross-sectional size of the motor output shaft and has an interference fit.

6. The fire pump coupling structure according to claim 1, characterized in that: Wear-resistant layers (32) are symmetrically provided on the inner walls of both sides of the coupling slot (31).

7. The fire pump coupling structure according to claim 6, characterized in that: The wear-resistant layer (32) is a wear-resistant rubber sleeve with a thickness of 1-3 mm.

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