CN210087594U - But shaft coupling formula eccentric shaft - Google Patents
But shaft coupling formula eccentric shaft Download PDFInfo
- Publication number
- CN210087594U CN210087594U CN201920600316.2U CN201920600316U CN210087594U CN 210087594 U CN210087594 U CN 210087594U CN 201920600316 U CN201920600316 U CN 201920600316U CN 210087594 U CN210087594 U CN 210087594U
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- Prior art keywords
- shaft
- eccentric
- counterweight
- connecting shaft
- couplable
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- 230000008878 coupling Effects 0.000 title description 4
- 238000010168 coupling process Methods 0.000 title description 4
- 238000005859 coupling reaction Methods 0.000 title description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a shaft-couplable eccentric shaft, which comprises a connecting shaft and a front balancing weight; the connecting shaft is provided with an eccentric wheel and a rear balancing weight; the connecting shaft comprises a front connecting shaft and a rear connecting shaft; the front balance weight comprises a front half balance weight and a rear half balance weight which are detachably connected; the front balancing weight is detachably sleeved on the front connecting shaft; the front counterweight and the rear counterweight are respectively arranged on the front connecting shaft and the rear connecting shaft. The utility model discloses an eccentric shaft is a plurality of plunger pumps of joinable, only needs a high-power motor alright drive a plurality of plunger pump work, compares with a plurality of motor drive respectively a plurality of plunger pumps, and work efficiency is higher, and it is more convenient to control, and single motor occupation space is littleer than many motors, and use cost is lower.
Description
Technical Field
The utility model relates to a plunger pump power transmission shaft technical field especially relates to a but shaft coupling formula eccentric shaft.
Background
The plunger pump is an important hydraulic device, is more commonly used in a hydraulic break-in rescue tool, and is used as a power transmission mechanism for converting mechanical energy of a motor into hydraulic energy output by the hydraulic tool. Generally, the plunger pump is internally driven by a power transmission shaft, and some plunger pumps realize the reciprocating motion of the plunger by the eccentric rotation of an eccentric shaft. The eccentric shaft is an important part in the plunger pump, and the design of the eccentric shaft directly influences the working performance of the plunger pump. When a plunger pump can not meet the working requirement, the plunger pump can be simultaneously operated, and a set of motor is additionally required, so that the total volume and the total mass are increased, the cost and the energy loss in working are increased, a shaft-connectable eccentric shaft is required to be designed, a plurality of plunger pumps are connected through a shaft, a high-power motor is shared, and the efficiency is improved. When a plurality of plunger pumps are connected, the moment borne by the eccentric shaft is increased, so that a balance weight needs to be arranged to balance the eccentric shaft. In order to reduce the abrasion caused by the contact of the eccentric wheel and the plunger, a needle bearing is sleeved on the outer edge of the eccentric wheel, so that the needle bearing is difficult to sleeve when the balance weights are arranged on two sides of the eccentric wheel.
Disclosure of Invention
The above-mentioned not enough to prior art, the utility model aims to solve the technical problem that a but, but multiaxis is united, the equilibrium is good, balanced heavy can dismantle the axle coupling formula eccentric shaft that makes things convenient for bearing installation is proposed.
The utility model provides a technical scheme that its technical problem adopted is, but provides a shaft connecting type eccentric shaft, a serial communication port, include:
a connecting shaft; the connecting shaft is provided with an eccentric wheel and a rear balancing weight; the connecting shaft comprises a front connecting shaft and a rear connecting shaft;
a front counterweight; comprises a front half counterweight and a rear half counterweight which are detachably connected; the front balancing weight is detachably sleeved on the front connecting shaft;
the front counterweight and the rear counterweight are respectively arranged on the front connecting shaft and the rear connecting shaft.
Preferably, the size, the eccentric direction, the eccentric distance and the distance from the eccentric wheel of the front balancing weight and the rear balancing weight are all the same, and the eccentric direction of the front balancing weight and the rear balancing weight is opposite to the eccentric direction of the eccentric wheel.
Preferably, the eccentric wheel further comprises a needle bearing, and the needle bearing is sleeved on the eccentric wheel.
Preferably, the first half-balancing weight has two first connecting faces, and the second half-balancing weight has two second connecting faces, and the two first connecting faces are respectively joggled with the two second connecting faces.
Preferably, one of the first connecting surface and the second connecting surface is provided with a mortise protrusion, and the other of the first connecting surface and the second connecting surface is provided with a mortise groove into which the mortise protrusion extends.
Preferably, the cross section of the tenon protrusion is trapezoidal, and the cross section of the tenon groove is also trapezoidal.
Preferably, the front connecting shaft is provided with a positioning groove for positioning the front half balancing weight or the rear half balancing weight.
Preferably, the positioning groove is recessed inward in the radial direction of the connecting shaft, and a positioning protrusion extending into the positioning groove is arranged on the inner wall of the front half counterweight or the rear half counterweight.
Preferably, preceding counter weight still includes and passes the fixed pin that passes preceding half counter weight, preceding connecting axle and the latter half counter weight in proper order, the one end of fixed pin is for having the cap end, and the other end is the capless end, the capless end is in the eccentric one side in the preceding counter weight.
Preferably, the cross section of the front connecting shaft is a regular hexagon, and a regular hexagon fixing groove extending into the rear connecting shaft along the axial direction is formed in the end face of the rear connecting shaft.
The utility model discloses an eccentric shaft is a plurality of plunger pumps of joinable, only needs a high-power motor alright drive a plurality of plunger pump work, compares with a plurality of motor drive respectively a plurality of plunger pumps, and work efficiency is higher, and it is more convenient to control, and single motor occupation space is littleer than many motors, and use cost is lower.
Drawings
Fig. 1 is a schematic structural view of a shaft-couplable eccentric shaft according to an embodiment of the present invention.
Fig. 2 is a front view of the front counterweight.
Fig. 3 shows a sectional view of the connecting shaft.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Referring to fig. 1 to 3, the present invention discloses a shaft-couplable eccentric shaft, which includes a connecting shaft 100 and a front balancing weight 200 sleeved on the connecting shaft 100, wherein the connecting shaft 100 is provided with an eccentric wheel 110 and a needle bearing 120, the ball bearing is sleeved on the eccentric wheel 110, and the front balancing weight 200 is detachable for facilitating the installation of the needle bearing 120; when the front counterweight 200 is installed, the needle bearing 120 is installed, and after the needle bearing 120 is fitted over the eccentric wheel 110, the front counterweight 200 is installed on the connecting shaft 100.
In this embodiment, the eccentric shaft is for connecting a plurality of plunger pumps, so, only need a high-power motor alright drive a plurality of plunger pumps work, compare with a plurality of plunger pumps of many motors drive respectively, work efficiency is higher, and it is more convenient to control, and single motor occupation space is littleer than many motors, and use cost is lower.
In this embodiment, the connecting shaft 100 includes a front connecting shaft 130 and a rear connecting shaft 140, the front counterweight 200 and the rear counterweight 150 are respectively disposed on the front connecting shaft 130 and the rear connecting shaft 140, and the front counterweight 200 and the rear counterweight 150 are used for balancing the eccentric wheel 110, wherein the eccentric wheel 110 is disposed at an intermediate position between the front counterweight 200 and the rear counterweight 150.
Specifically, the front and rear counterweights 200 and 150 have the same size, eccentric direction, eccentric distance, and distance from the eccentric wheel 110, and the eccentric direction of the front and rear counterweights 200 and 150 is opposite to the eccentric direction of the eccentric wheel 110.
The preceding balanced heavy 200 detachable cover on preceding connecting axle 130, preceding balanced heavy 200 is concrete including the preceding half balanced 210 and the half balanced 220 of connecting of dismantling, preceding half balanced seat is joggled with half balanced 220 looks of half.
In this embodiment, the front connecting shaft 130, the rear connecting shaft 140 and the eccentric wheel 110 are integrally connected.
More specifically, the front half-weight 210 has two first connecting surfaces, and the rear half-weight 220 has two second connecting surfaces, and the two first connecting surfaces are respectively jogged with the two second connecting surfaces.
The front half-counterweight 210 and the rear half-counterweight 220 are joggled to enclose the front connecting shaft 130.
One of the first and second joint faces is provided with a mortise protrusion 10, and the other of the first and second joint faces is provided with a mortise groove 20 into which the mortise protrusion 10 is inserted.
In this embodiment, the cross section of the dovetail protrusion 10 is trapezoidal, and the cross section of the dovetail groove 20 is also trapezoidal. The size of the tenon protrusion 10 is almost the same as that of the tenon groove 20, the tenon groove 20 is gradually widened in the direction of the depression, and the tenon groove 20 can catch the tenon protrusion 10.
The front connecting shaft 130 is provided with a positioning groove 30 for positioning the front half balancing weight 210 or the rear half balancing weight 220; in this embodiment, the positioning groove 30 is used to prevent the front balance shaft from being displaced on the front connecting shaft 130.
Specifically, the positioning groove 30 is recessed inward in the radial direction of the connecting shaft 100, and the inner wall of the front half-weight 210 or the rear half-weight 220 is provided with a positioning projection 40 that protrudes into the positioning groove 30.
The front balance weight further includes a fixing pin 230 passing through the front half balance weight 210, the front connecting shaft 130, and the rear half balance weight 220 in sequence, one end of the fixing pin 230 is a capped end, one end of the fixing pin 230 is capped to prevent the fixing pin 230 from being thrown out of the front balance weight 200, and the other end is a capless end, which is located at an eccentric side of the front balance weight 200 (due to centrifugal force, the fixing pin 230 is located at the eccentric side without capping for fixation).
The front counterweight 200 is further fixed to the front connecting shaft 130 by fixing pins 230 penetrating the front half counterweight 210, the front connecting shaft 130, and the rear half counterweight 220, thereby improving the stability of the connection of the front counterweight 200 to the front connecting shaft 130.
The front connecting shaft 130 has a regular hexagonal cross section, and the end surface of the rear connecting shaft 140 is provided with a regular hexagonal fixing groove extending in the direction of the rear connecting shaft 140.
In this embodiment, the sectional size of the front connecting shaft 130 is almost the same as the size of the fixing groove in the rear connecting shaft 140, and the front connecting shaft 130 may be connected with the rear connecting shaft 140 in another eccentric shaft in a matching manner.
Through a plurality of plunger pumps of eccentric shaft joinable in this application, utilize same motor alright drive a plurality of plunger pumps, the control of single motor is more convenient, and single motor occupation space is littleer than many motors, and use cost is lower.
The eccentric wheel 110 in the eccentric shaft is sleeved with a needle bearing 120, and when the eccentric shaft is connected with a plunger pump, the plunger pump is connected with the needle bearing 120, so that the abrasion generated by the contact between the eccentric wheel 110 and a plunger can be reduced.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. An eccentric shaft of the couplable type, comprising:
a connecting shaft; the connecting shaft is provided with an eccentric wheel and a rear balancing weight; the connecting shaft comprises a front connecting shaft and a rear connecting shaft;
a front counterweight; comprises a front half counterweight and a rear half counterweight which are detachably connected; the front balancing weight is detachably sleeved on the front connecting shaft;
the front counterweight and the rear counterweight are respectively arranged on the front connecting shaft and the rear connecting shaft.
2. An eccentric shaft of the couplable type according to claim 1, wherein: the size, the eccentric direction, the eccentric distance and the distance from the eccentric wheel of the front counterweight and the rear counterweight are all consistent, and the eccentric direction of the front counterweight and the rear counterweight is opposite to the eccentric direction of the eccentric wheel.
3. An eccentric shaft of the couplable type according to claim 1, wherein: the needle roller bearing is sleeved on the eccentric wheel.
4. An eccentric shaft of the couplable type according to claim 1, wherein: the first half counterweight has two first connecting faces, the second half counterweight has two second connecting faces, and the two first connecting faces are in joggle joint with the two second connecting faces respectively.
5. An eccentric shaft of the couplable type according to claim 4, wherein: one of the first connecting surface and the second connecting surface is provided with a joggle protrusion, and the other one of the first connecting surface and the second connecting surface is provided with a joggle groove for the joggle protrusion to extend into.
6. An eccentric shaft of the couplable type according to claim 5, wherein: the cross section of the joggle protrusion is trapezoidal, and the cross section of the joggle groove is also trapezoidal.
7. An eccentric shaft of the couplable type according to claim 1, wherein: the front connecting shaft is provided with a positioning groove for positioning the front half balancing weight or the rear half balancing weight.
8. An eccentric shaft of the couplable type according to claim 7, wherein: the constant head tank is inwards sunken towards the radial of connecting axle, the inner wall of first half balanced weight or latter half balanced weight is provided with the location that stretches into the constant head tank protrudingly.
9. An eccentric shaft of the couplable type according to claim 1, wherein: preceding balance weight is still including passing the fixed pin that passes preceding half balance weight, preceding connecting axle and half balance weight in proper order, the one end of fixed pin is for having the cap end, and the other end is the capless end, the capless end is in eccentric one side in preceding balance weight.
10. An eccentric shaft of the couplable type according to claim 1, wherein: the cross-section of preceding connecting axle is regular hexagon, the terminal surface of back connecting axle sets up the regular hexagon's that stretches into along back connection axial direction fixed slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920600316.2U CN210087594U (en) | 2019-04-28 | 2019-04-28 | But shaft coupling formula eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920600316.2U CN210087594U (en) | 2019-04-28 | 2019-04-28 | But shaft coupling formula eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087594U true CN210087594U (en) | 2020-02-18 |
Family
ID=69476573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920600316.2U Active CN210087594U (en) | 2019-04-28 | 2019-04-28 | But shaft coupling formula eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087594U (en) |
-
2019
- 2019-04-28 CN CN201920600316.2U patent/CN210087594U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |