Hydraulic station of paper tray machine

Abstract

The utility model discloses a hydraulic station of a paper tray machine, which comprises a hydraulic pump, a motor for driving, a control valve and an oil tank, the shaft end of the motor is connected with a first connecting piece, the shaft end of the hydraulic pump is connected with a second connecting piece, and one end of the first connecting piece facing the second connecting piece is provided with a plurality of first convex keys which are arranged at intervals. The end, facing the first connecting piece, of the second connecting piece is provided with a plurality of second protruding keys arranged at intervals, the first protruding keys and the second protruding keys are evenly distributed along the circumference, a buffering neutral position is reserved between every two adjacent first protruding keys and second protruding keys, and a buffering cushion is further arranged between the first connecting piece and the second connecting piece. The buffer pad comprises a fixing ring and buffer splines, the buffer splines are evenly distributed on the fixing ring along the circumference, the buffer splines extend into the buffer neutral gear, the buffer structure is additionally arranged between the motor and the hydraulic pump, the motor and the hydraulic pump are in flexible connection, and the phenomena of shaft breakage and key hitting are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydraulic station, more particularly relates to a kind of paper disc machine's hydraulic station. BACKGROUND

[0002] Hydraulic station is by hydraulic pump, driving motor, oil tank, directional valve, throttle valve, overflow valve and other elements constitute the hydraulic source device or including control valve in the hydraulic device.Oil is supplied according to the flow direction, pressure and flow required by driving device, and it is suitable for driving device and hydraulic station separation on various machines, connect hydraulic station and driving device (oil cylinder or motor) with oil pipe, and hydraulic system can realize various specified actions.

[0003] At present, the motor of hydraulic station is directly connected with hydraulic pump, and when the oil pipeline pressure is unstable, shaft breakage and keying phenomenon are prone to occur. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a buffer structure between the motor and the hydraulic pump, so that they are connected softly, and the shaft breakage and keying phenomenon is avoided.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of paper disc machine's hydraulic station, including hydraulic pump, driving motor, control valve and oil tank, the shaft end of the motor is connected with first connecting piece, the shaft end of the hydraulic pump is connected with second connecting piece, the end of first connecting piece towards second connecting piece is provided with a plurality of interval arrangement first key, the end of second connecting piece towards first connecting piece is provided with a plurality of interval arrangement second key, first key and second key are evenly distributed along circumference, and there is buffer clearance between adjacent two first key and second key, buffer pad is further provided between first connecting piece and second connecting piece, the buffer pad includes fixed ring and buffer spline, the buffer spline is evenly distributed on fixed ring along circumference, and the buffer spline extends into buffer clearance.

[0006] Further, the two side surfaces of the buffer spline are tightly attached to the first key and the second key.

[0007] Further, the side surface of the buffer spline is arc-shaped, and the size of the buffer spline gradually decreases from the middle to the two ends.

[0008] Further, the oil tank includes a cover plate, the outer side of the cover plate is provided with an oil return groove, and the hydraulic pump and the control valve are mounted on the cover plate.

[0009] Further, the bottom of the oil tank is provided with a tray, the outer periphery of the tray is provided with a baffle, and a space is provided between the side surface of the oil tank and the baffle.

[0010] Compared with the prior art, the paper disc machine hydraulic station has the advantages that: the buffer pad is arranged, when the hydraulic pump receives sudden resistance or impact, the first connecting piece and the second connecting piece still relatively rotate, at this time, the buffer spline between the first key and the second key is compressed to achieve the purpose of buffering, and the shaft breakage or key breakage caused by hard connection is avoided, meanwhile, the buffer pad is not fixedly connected with the first key and the second key, but is clamped between the first key and the second key through the shape of the buffer spline, the coaxiality requirement of the motor and the hydraulic pump is reduced during operation, especially in the position with strong vibration, the operation between the motor and the hydraulic pump is more stable, and the oil tank, the cover plate, the oil return groove, the motor, the hydraulic pump, the control valve, the tray, the baffle and the buffer pad are arranged. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a perspective view of the hydraulic station of the paper disc machine of the utility model;

[0012] Figure 2 It is a top view of the hydraulic station of the paper disc machine of the utility model;

[0013] Figure 3 It is a perspective view of the first connecting piece, the second connecting piece and the buffer pad in the utility model;

[0014] Figure 4 It is a front view of the structure in the utility model; Figure 3

[0015] It is a sectional view of A-A in the utility model; Figure 5 Figure 4 It is a perspective view of the buffer pad;

[0016] Figure 6 It is a side view of the buffer pad.

[0017] Figure 7 The reference signs: 1, oil tank; 11, cover plate; 111, oil return groove; 2, motor; 3, hydraulic pump; 4, control valve; 5, tray; 51, baffle; 61, first connecting piece; 611, first key; 62, second connecting piece; 621, second key; 7, buffer pad; 71, fixing ring; 72, buffer spline. DETAILED DESCRIPTION

[0018] The embodiment of the paper disc machine hydraulic station of the utility model is further explained.

[0019] Figures 1 to 7 The embodiment of the paper disc machine hydraulic station of the utility model is further explained.

[0020] ​​In the description of the utility model, it is necessary to explain that, for the direction words, if the terms ''center'', ''transverse (X) '', ''longitudinal (Y) '', ''vertical (Z) '', ''length'', ''width'', ''thickness'', ''upper'', ''lower'', ''front'', ''rear'', ''left'', ''right'', ''vertical'', ''horizontal'', ''top'', ''bottom'', ''inner'', ''outer'', ''clockwise'', ''counterclockwise'' and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0021] In addition, if the terms ''first'' and ''second'' are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the ''first'' and ''second'' features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of ''several'' and ''several'' is two or more than two, unless otherwise explicitly specified.

[0022] A hydraulic station of a paper disc machine, comprising a hydraulic pump 3, a driving motor 2, a control valve 4 and an oil tank 1, the shaft end of the motor 2 is connected with a first connecting piece 61, the shaft end of the hydraulic pump 3 is connected with a second connecting piece 62, a plurality of first keys 611 are arranged at one end of the first connecting piece 61 towards the second connecting piece 62, a plurality of second keys 621 are arranged at one end of the second connecting piece 62 towards the first connecting piece 61, the first keys 611 and the second keys 621 are uniformly distributed along the circumference, and a buffer gap is left between adjacent two first keys 611 and second keys 621, a buffer pad 7 is further arranged between the first connecting piece 61 and the second connecting piece 62, the buffer pad 7 comprises a fixing ring 71 and buffer splines 72, the buffer splines 72 are uniformly distributed on the fixing ring 71 along the circumference, and the buffer splines 72 extend into the buffer gap.

[0023] In the embodiment, the hydraulic pump 3 is a double pump, and the corresponding control valve 4 is arranged as a double valve, that is, the double valve controls the double cylinders without interference, and the double pumps are in series, and the motor 2 drives the double pumps in series to save energy and electricity.

[0024] In the embodiment, the motor 2 and the hydraulic pump 3 transmit power through the first connecting piece 61 and the second connecting piece 62, wherein the first connecting piece 61 and the second connecting piece 62 are inserted into each other in the state shown in the figure by using the first keys 611 and the second keys 621, and the buffer splines 72 of the buffer pad 7 are embedded in the buffer gap, as shown in the figure. Figure 3 Figure 3 And 4 ​As shown, when rotating, the first connecting piece 61 and the first key 611 rotate circumferentially, the buffer spline 72 and the second key 621, the second connecting piece 62 drive the hydraulic pump 3 to work, when impacted, the second connecting piece 62 and the second key 621 suddenly decelerate, the first connecting piece 61 and the first key 611 can still continue to rotate, and the buffer spline 72 is compressed to reduce the impact on the second key 621, that is, to achieve the purpose of soft connection between the two.

[0025] The first key 611 in the embodiment is distributed near the outer circumferential surface of the first connecting piece 61, and the second key 621 is distributed near the outer circumferential surface of the second connecting piece 62, that is, the inner side of all the first keys 611 forms a cavity, and the inner side of all the second keys 621 also forms a cavity, and the fixing ring 71 of the buffer pad 7 is located in the cavity, so that the buffer pad 7 can maintain stable position without separate fixed connection, and the installation coaxiality of the hydraulic pump 3 of the motor 2 is reduced.

[0026] The buffer pad 7 in the embodiment can be made of rubber or silicone.

[0027] As shown, Figure 4 The two side surfaces of the buffer spline 72 in the embodiment are preferably in close contact with the first key 611 and the second key 621.

[0028] By pasting the buffer spline 72 on both sides, the power of the motor 2 can be quickly and directly transmitted to the hydraulic pump 3 in the normal working state.

[0029] The side surface of the buffer spline 72 in the embodiment is arc-shaped, and the size of the buffer spline 72 gradually decreases from the middle to both ends.

[0030] The arc-shaped buffer spline 72 can increase the contact area with the first key 611 and the second key 621, reduce the impact force of the buffer spline 72, and when the buffer spline 72 is extruded, it has a tendency to move to the middle area, which can avoid displacement of the entire buffer pad 7.

[0031] As shown, Figure 1 and 2 The oil tank 1 in the embodiment preferably comprises a cover plate 11, the outer side of the cover plate 11 is provided with an oil return groove 111, and the hydraulic pump 3 and the control valve 4 are mounted on the cover plate 11.

[0032] The entire cover plate 11 is integrally formed, reducing high-frequency vibration, and the oil return groove 111 on the outer side can collect oil above the cover plate 11 to prevent it from flowing randomly.

[0033] As shown, Figure 1As shown, preferably in the embodiment, the bottom of the oil tank 1 is provided with a tray 5, the outer periphery of the tray 5 is provided with a baffle 51, and a space is provided between the side of the oil tank 1 and the baffle 51.

[0034] The tray 5 and the baffle 51 are combined to form an oil receiving tray 5, which better solves the problem of hydraulic oil leakage during maintenance.

[0035] The fixed plate is arranged between the tank body of the oil tank 1 and the baffle 51 to stabilize the tank body of the oil tank 1 at a specified position of the tray 5.

[0036] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A hydraulic station for a paper tray machine, comprising a hydraulic pump, a drive motor, a control valve, and an oil tank, characterized in that: The shaft end of the electric motor is connected to a first connector, and the shaft end of the hydraulic pump is connected to a second connector. The end of the first connector facing the second connector is provided with a plurality of spaced first protruding keys, and the end of the second connector facing the first connector is provided with a plurality of spaced second protruding keys. The first and second protruding keys are evenly distributed along the circumference, and a buffer gap is left between two adjacent first and second protruding keys. A buffer pad is also provided between the first and second connectors. The buffer pad includes a fixing ring and a buffer spline. The buffer spline is evenly distributed along the circumference on the fixing ring, and the buffer spline extends into the buffer gap.

2. The hydraulic station of the paper tray machine according to claim 1, characterized in that: The two sides of the buffer spline are in close contact with the first and second convex keys.

3. The hydraulic station of the paper tray machine according to claim 2, characterized in that: The side of the buffer spline is arc-shaped, and the size of the buffer spline gradually decreases from the middle to both ends.

4. The hydraulic station of the paper tray machine according to claim 3, characterized in that: The oil tank includes a cover plate, and an oil return groove is provided on the outer side of the cover plate. The hydraulic pump and control valve are mounted on the cover plate.

5. The hydraulic station of the paper tray machine according to claim 4, characterized in that: The bottom of the oil tank is provided with a tray, the outer periphery of the tray is provided with a baffle, and there is a gap between the side of the oil tank and the baffle.

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