Worm gear case capable of being manually adjusted

Abstract

The worm gear case capable of being manually adjusted comprises a case shell, a worm gear and a worm, the worm gear and the worm are arranged in the case shell in a matched mode, shaft rods are arranged on the two sides of the worm respectively, and the worm is rotationally installed on a bearing seat through the shaft rods. The transmission cylinder is fixedly installed at the outer end of the shaft rod so as to drive the worm to rotate, the front end of the transmission cylinder is provided with an outer spline matched with the electric assembly, and the rear end of the transmission cylinder is provided with a first bevel gear matched with the manual assembly so as to be connected with the manual assembly and the electric assembly. A first slope block is installed on a third supporting plate of the electric assembly, a second slope block is installed on one side of a second supporting plate of the manual assembly, and by means of the abutting pushing effect of the first slope block and the second slope block, when a spline cylinder moves forwards to be connected with a transmission cylinder, the first slope block will push the second slope block to move backwards, and the transmission cylinder is driven to rotate. And the second bevel gear is gradually separated from the first bevel gear, so that the transmission cylinder and the spline cylinder are singly matched, and the influence of the manual assembly on the worm at the moment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to worm wheel box technical field, concretely is a worm wheel box of manual adjustment. BACKGROUND

[0002] Worm wheel box is composed of worm wheel, worm, shaft, bearing and casing etc., is used for reducing the rotating speed, increases the torque, is mainly used on valve control or rotating platform and other equipment, the existing worm wheel box generally is electric control, also has the supplementary installation handle adjustment, electric control mechanism and handle adjustment can act simultaneously, personnel is easy to mistake touch handle and cause the misadjustment, and also easy because handle skids etc. Cause misadjustment, influence equipment adjustment's accuracy. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem in providing a worm wheel box of manual and electric adjustment to solve the problem in the above background technology.

[0004] The utility model solves the technical problem and adopts the following technical scheme to realize: a worm wheel box of manual adjustment, including box shell and the worm wheel and worm that are set up in the box shell cooperation, both sides of the worm are equipped with shaft, and are installed on the bearing seat through the shaft rotation, one side of the worm is equipped with the brake connected with the shaft, the other side is equipped with the transmission mechanism of transmission connection with the shaft;

[0005] The transmission mechanism includes the transmission piece fixedly installed on the shaft, the electric component and the manual component of switchable installation on the outside of transmission piece, the transmission piece includes the transmission cylinder fixedly installed on the shaft and the first conical gear fixedly installed on the transmission cylinder, the external spline is set up in the transmission cylinder and is located the front end of first conical gear, the electric component includes the spline cylinder set up with the external spline cooperation, and the first ring plate of driving spline cylinder telescopic movement, the manual component includes the second conical gear set up with first conical gear cooperation, and the second ring plate of driving second conical gear telescopic movement, the first ring plate and the second ring plate between being equipped with the pusher, when spline cylinder and transmission cylinder transmission connection, use pusher to push second conical gear and make manual component will not affect the adjustment of electric component.

[0006] As a further scheme of the utility model:

[0007] The spline cylinder is fixedly installed with square shaft sleeve away from the transmission cylinder side, and is slidably installed on the square shaft through the square shaft sleeve, the square shaft is connected with the output rod of motor to drive the spline cylinder to rotate, the spline cylinder is equipped with the shaft groove to be set in the outer end of transmission cylinder and be connected with transmission cylinder through the cooperation with external spline.

[0008] As a further scheme of the utility model:

[0009] The first ring plate is sleeved on the outer end of the square shaft sleeve, one side of the first ring plate is connected with the outer side of the spline barrel through a thrust bearing, a baffle is fixedly arranged on the side of the square shaft sleeve away from the spline barrel, the first ring plate is clamped between the baffle and the spline barrel, the first ring plate drives the spline barrel to move forward and backward, a first supporting plate is fixedly arranged on one side of the first ring plate, the first supporting plate is slidingly installed on a first guide sliding rod, and a push-pull electromagnet is installed at a corresponding position of the box shell and is used for driving the first supporting plate to move in and out, so that the extension and retraction movement of the spline barrel is controlled.

[0010] As a further scheme of the utility model:

[0011] The manual assembly comprises a manual shaft slidingly installed on the box shell, one side of the manual shaft is fixedly connected with the second bevel gear, and the outer side of the manual shaft is fixedly connected with a rotating handle, so as to control the rotation of the second bevel gear.

[0012] As a further scheme of the utility model:

[0013] The second ring plate is sleeved on the outer end of the manual shaft and is connected with the second bevel gear through a thrust bearing, so as to drive the second bevel gear to move in and out, a spring is sleeved between the inner wall of the box shell and the second ring plate, so as to push the second bevel gear to move forward, the two sides of the second ring plate are respectively provided with a second supporting plate, and the second supporting plate is slidingly installed on a second guide sliding rod, so as to limit the second supporting plate.

[0014] As a further scheme of the utility model:

[0015] The first ring plate is sleeved on the outer end of the manual shaft and is connected with the second bevel gear through a thrust bearing, so as to drive the second bevel gear to move in and out, a spring is sleeved between the inner wall of the box shell and the second ring plate, so as to push the second bevel gear to move forward, the two sides of the second ring plate are respectively provided with a second supporting plate, and the second supporting plate is slidingly installed on a second guide sliding rod, so as to limit the second supporting plate.

[0016] Compared with the prior art, the present invention has the following advantages: a transmission cylinder is fixedly mounted on the outer end of the shaft to drive the rotation of the worm, a front end of the transmission cylinder is provided with an external spline configured to cooperate with the electric component, and a rear end of the transmission cylinder is provided with a first bevel gear configured to cooperate with the manual component to connect to the manual component and the electric component respectively. A first ramp block is mounted on the third support plate of the electric component, and a second ramp block is mounted on one side of the second support plate of the manual component. The first ramp block and the second ramp block are used to push each other. When the spline cylinder moves forward to connect with the transmission cylinder, the first ramp block pushes the second ramp block backward, gradually disengaging the second bevel gear from the first bevel gear, thereby making the transmission cylinder and the spline cylinder mutually aligned, thus preventing the manual component from affecting the worm. When the push-pull electromagnet controls the first ring plate to move backward, the spline cylinder disengages the transmission cylinder, the first ramp block moves backward, and the second ring plate, driven by the spring, connects the second bevel gear to the first bevel gear. The operator can then control the rotation of the worm by turning the handle to achieve manual adjustment. The brake on one side of the worm is used to improve the stability of the worm. The manual component and the electric component in this device can be connected to the worm drive alone to avoid mutual influence and improve the accuracy of equipment adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a partial cross-sectional view of the utility model Figure 1 ;

[0019] Figure 3 This is a partial cross-sectional view of the utility model Figure 2 ;

[0020] Figure 4 for Figure 2 A in the middle is an enlarged structural diagram;

[0021] Markings in the figure: 1. Box shell; 2. Transmission cylinder; 3. Spline cylinder; 4. Second bevel gear; 5. Third support plate; 11. Worm gear; 12. Worm; 13. Shaft; 14. Bearing seat; 15. Brake; 21. First bevel gear; 22. External spline; 31. First ring plate; 32. Square sleeve; 33. Square shaft; 34. Motor; 35. Baffle; 36. First support plate; 37. First guide rod; 38. Push-pull electromagnet; 41. Second ring plate; 42. Manual shaft; 43. Spring; 44. Second support plate; 45. Second guide rod; 46. Rotary handle; 51. First ramp block; 52. Second ramp block. DETAILED DESCRIPTION

[0022] In order to make the technical means, creation characteristics, achieve the purpose and effect of the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0023] As shown in Figures 1 to 4

[0024] The embodiment provides a manually adjustable worm wheel box, which comprises a box shell 1, a worm wheel 11 and a worm 12 which are arranged in the box shell 1 in cooperation, shaft rods 13 are arranged on the two sides of the worm 12 respectively, the worm 12 is rotatably installed on a bearing seat 14 through the shaft rods 13, a brake 15 is arranged on one side of the worm 12 and connected with the shaft rod 13, and a transmission mechanism is arranged on the other side and transmissionally connected with the shaft rod 13.

[0025] The transmission mechanism comprises a transmission piece fixedly installed on the shaft rod 13, an electric component and a manual component which can be switchably installed on the outer side of the transmission piece, the transmission piece comprises a transmission cylinder 2 fixedly installed on the shaft rod 13, a first conical gear 21 fixedly installed on the transmission cylinder 2 and an outer spline 22 arranged at the front end of the transmission cylinder 2 and located at the first conical gear 21, the electric component comprises a spline cylinder 3 arranged in cooperation with the outer spline 22 and a first ring plate 31 for driving the spline cylinder 3 to move in an extending or retracting mode, and the manual component comprises a second conical gear 4 arranged in cooperation with the first conical gear 21 and a second ring plate 41 for driving the second conical gear 4 to move in an extending or retracting mode, a pushing piece is arranged in cooperation between the first ring plate 31 and the second ring plate 41, when the spline cylinder 3 is transmissionally connected with the transmission cylinder 2, the pushing piece is used to push the second conical gear 4 to be separated from the first conical gear 21, so that the manual component does not affect the adjustment of the electric component.

[0026] In the embodiment, the spline cylinder 3 is fixedly installed with a square shaft sleeve 32 on the side away from the transmission cylinder 2, and is slidably installed on a square shaft 33 through the square shaft sleeve 32, the square shaft 33 is connected with an output rod of a motor 34 to drive the spline cylinder 3 to rotate, an axle slot is arranged in the spline cylinder 3 to be sleeved on the outer end of the transmission cylinder 2 and connected with the transmission cylinder 2 through cooperation with the outer spline 22.

[0027] The first ring plate 31 is sleeved on the outer end of the square shaft sleeve 32, one side of the first ring plate 31 is connected with the outer side of the spline cylinder 3 through a thrust bearing, the square shaft sleeve 32 is fixedly provided with a baffle 35 on the side away from the spline cylinder 3 of the first ring plate 31, so that the first ring plate 31 is clamped between the baffle and the spline cylinder 3, the first ring plate 31 is convenient to drive the spline cylinder 3 to move forward and backward, a first supporting plate 36 is fixedly arranged on one side of the first ring plate 31, the first supporting plate 36 is slidably installed on a first guide sliding rod 37, and a push-pull electromagnet 38 for driving the first supporting plate 36 to move in an extending or retracting mode is installed at the corresponding position of the box shell 1, so as to control the spline cylinder 3 to move in an extending or retracting mode.

[0028] ​In the embodiment, the manual assembly comprises a manual shaft 42 slidingly installed on the box shell 1, one side of the manual shaft 42 is fixedly connected with the second bevel gear 4, and the outer side of the manual shaft 42 is fixedly connected with a rotating handle 46 to control the rotation of the second bevel gear 4.

[0029] The second ring plate 41 is sleeved on the outer end of the manual shaft 42 and is connected with the second bevel gear 4 through a thrust bearing to drive the second bevel gear 4 to move in and out, the manual shaft 42 is sleeved between the inner wall of the box shell 1 and the second ring plate 41 and is sleeved with a spring 43 to push the second bevel gear 4 to move forward, and the two sides of the second ring plate 41 are respectively provided with second supporting plates 44 which are slidingly installed on second guide sliding rods 45 to limit the second supporting plates 44.

[0030] In the embodiment, the first ring plate 31 is provided with a third supporting plate 5 on the side facing the manual assembly, the outer end of the third supporting plate 5 is provided with a first inclined block 51, the outer end of the second supporting plate 44 is provided with a second inclined block 52 matched with the first inclined block 51, when the first ring plate 31 drives the spline barrel 3 to move forward, the first inclined block 51 pushes the second inclined block 52 to move backward, the second ring plate 41 drives the second bevel gear 4 to retract, the second bevel gear 4 is separated from the first bevel gear 21, and the manual assembly is not connected with the transmission barrel 2.

[0031] The beneficial effects of the utility model are as follows: the transmission barrel 2 is fixedly installed on the outer end of the shaft rod 13 to drive the worm 12 to rotate, the transmission barrel 2 is provided with an outer spline 22 matched with the electric assembly on the front end, and the transmission barrel 2 is provided with the first bevel gear 21 matched with the manual assembly on the rear end to be connected with the manual assembly and the electric assembly respectively. The first inclined block 51 is installed on the third supporting plate 5 of the electric assembly, the second inclined block 52 is installed on one side of the second supporting plate 44 of the manual assembly, the first inclined block 51 and the second inclined block 52 are used to push, when the spline barrel 3 is connected with the transmission barrel 2 by moving forward, the first inclined block 51 pushes the second inclined block 52 to move backward, and the second bevel gear 4 is gradually separated from the first bevel gear 21, so that the transmission barrel 2 and the spline barrel 3 are matched, the manual assembly does not affect the worm 12, when the first ring plate 31 is controlled to move backward by the push-pull electromagnet 38, the spline barrel 3 is separated from the transmission barrel 2, the first inclined block 51 moves backward, the second ring plate 41 is pushed by the spring 43, the second bevel gear 4 is in transmission connection with the first bevel gear 21, and personnel can control the worm 12 to rotate through the rotating handle to realize manual adjustment. The brake 15 on one side of the worm 12 is used to improve the stability of the worm 12. The manual assembly and the electric assembly in the device can be single transmission connection with the worm 12, the mutual influence is avoided, and the precision of equipment adjustment is improved.

[0032] The basic principle and main features of the present application and the 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 examples, and the above examples and descriptions in the specification are only to illustrate the principles of 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 claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents. It should be noted that in this document, if there are relationship terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

Claims

1. A manually adjustable worm gear box, comprising a box housing (1) and a worm wheel (11) and a worm (12) cooperatively arranged in the box housing (1), wherein the worm (12) is provided with a shaft (13) on both sides and is rotatably mounted on a bearing seat (14) through the shaft (13), characterized in that: The worm (12) is provided with a brake (15) connected to the shaft (13) on one side, and a transmission mechanism connected to the shaft (13) on the other side; The transmission mechanism comprises a transmission member fixedly mounted on a shaft (13), an electric component switchably mounted on the outside of the transmission member, and a manual component, wherein the transmission member comprises a transmission cylinder (2) fixedly mounted on the shaft (13), a first bevel gear (21) fixedly mounted on the transmission cylinder (2), an external spline (22) arranged on the transmission cylinder (2) at the front end of the first bevel gear (21), the electric component comprises a spline cylinder (3) matched with the external spline (22), and a first ring plate (31) for driving the spline cylinder (3) to move telescopically, the manual component comprises a second bevel gear (4) matched with the first bevel gear (21), and a second ring plate (41) for driving the second bevel gear (4) to move telescopically, a pushing member is matched between the first ring plate (31) and the second ring plate (41), and when the spline cylinder (3) is in transmission connection with the transmission cylinder (2), the pushing member is used to push the second bevel gear (4) away from the first bevel gear (21), so that the manual component does not affect the adjustment of the electric component.

2. A manually adjustable worm gear box according to claim 1, characterized in that: A square shaft sleeve (32) is fixedly mounted on the side of the spline cylinder (3) away from the transmission cylinder (2), and is slidably mounted on a square shaft (33) through the square shaft sleeve (32). The square shaft (33) is connected to an output rod of a motor (34) to drive the spline cylinder (3) to rotate. An axis groove is provided in the spline cylinder (3) to be sleeved on the outer end of the transmission cylinder (2) and connected to the transmission cylinder (2) by cooperating with an external spline (22).

3. The manually adjustable worm gear box according to claim 2, characterized in that: The first ring plate (31) is sleeved on the outer end of the square shaft sleeve (32), and one side of the first ring plate (31) is connected to the outer side of the spline cylinder (3) through a thrust bearing. A baffle (35) is fixedly provided on the side of the square shaft sleeve (32) located away from the spline cylinder (3) to clamp the first ring plate (31) between the baffle and the spline cylinder (3) so that the first ring plate (31) can drive the spline cylinder (3) to move forward and backward. A first support plate (36) is fixedly provided on one side of the first ring plate (31). The first support plate (36) is slidably mounted on the first guide rod (37), and a push-pull electromagnet (38) is installed at a corresponding position of the box shell (1) to push the first support plate (36) to move telescopically, so as to control the telescopic movement of the spline cylinder (3).

4. The manually adjustable worm gear box according to claim 3, characterized in that: The manual assembly comprises a manual shaft (42) slidably mounted on the housing (1), one side of the manual shaft (42) being fixedly connected to the second bevel gear (4), and the outer side of the manual shaft (42) being fixedly connected to a rotary handle (46) to control the rotation of the second bevel gear (4).

5. The manually adjustable worm gear box according to claim 4, characterized in that: The second ring plate (41) is sleeved on the outer end of the manual shaft (42) and is connected to the second bevel gear (4) through a thrust bearing to drive the second bevel gear (4) to move telescopically. The manual shaft (42) is located between the inner wall of the box shell (1) and the second ring plate (41) and is sleeved with a spring (43) to push the second bevel gear (4) to move forward. Second support plates (44) are respectively provided on both sides of the second ring plate (41). The second support plates (44) are slidably mounted on the second guide rod (45) to limit the second support plates (44).

6. The manually adjustable worm gear box according to claim 5, characterized in that: The first ring plate (31) is provided with a third support plate (5) on the side facing the manual assembly, and the outer end of the third support plate (5) is provided with a first slope block (51), and the outer end of the second support plate (44) is provided with a second slope block (52) corresponding to the first slope block (51) and arranged in cooperation with the first slope block. When the first ring plate (31) drives the spline cylinder (3) to move forward, the first slope block (51) pushes the second slope block (52) to move backward, and the second ring plate (41) drives the second bevel gear (4) to retract, so that the second bevel gear (4) is disengaged from the first bevel gear (21), and the manual assembly is not connected to the transmission cylinder (2).

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