A lifting transmission device and a mixer using the same

Abstract

The present invention discloses a lifting transmission device, including a mounting bracket, a transmission box, a driving member, a hydraulic column and a stirring shaft. The stirring shaft and the driving member are both fixed to the transmission box, and the stirring shaft is connected to the output shaft of the driving member in the transmission box. The hydraulic columns are arranged in pairs on both sides of the mounting bracket. The top of the hydraulic column is fixed to the outside of the transmission box, and when the hydraulic column is lifted or lowered, the transmission box, the driving member and the stirring shaft are driven to lift or lower at the same time. The axis of the output shaft of the driving member is located on the central connection line of the hydraulic columns arranged in pairs. By changing the installation position of the driving member on the transmission box, the overall stability of the lifting transmission device is adjusted. When the axis of the output shaft of the driving member is located on the central connection line of the hydraulic column, the installation position of the driving member is close to the center of the lifting transmission device, and the overall installation area of ​​the driving member and the hydraulic column is reduced in length. The center of gravity of the driving member is close to the central connection line of the hydraulic column, and the lifting transmission device is relatively stable as a whole.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting devices, and in particular to a lifting transmission device and a mixer using the same. Background Art

[0002] In the fields of chemical industry, food and construction, mixing equipment is often used to stir the materials needed to obtain evenly dispersed materials, so that the materials do not clump and react completely. In order to make the materials stir more evenly, additional components such as lifting devices are usually added to the mixing equipment. The lifting device drives the stirring shaft to rise and fall to adjust the height of the stirring blades to achieve the best stirring and dispersing effect. All materials in the stirring chamber can be stirred, so it is widely used.

[0003] However, traditional mixing equipment with lifting devices generally have some shortcomings, that is, the space is not fully utilized. The existing lifting device, stirring shaft and motor are all arranged in parallel below the machine head, and the lifting device is located between the stirring shaft and the motor. This installation method often occupies a large space, and the machine head that is installed in conjunction with it must also be set to a longer shape to accommodate the installation of the lifting device and the motor. Therefore, the installation area of ​​the mixer using this setting method is large, resulting in a waste of site space and increased production costs. When the motors located on both sides of the lifting device drive the stirring shaft to rotate, the main motor is far away from its support point, resulting in a large torque, and the dispersion device is difficult to balance. A slight shake at the motor end will cause a huge vibration of the dispersion shaft, thereby affecting the stability and service life of the entire disperser. Summary of the Invention

[0004] The main purpose of the present invention is to propose a lifting transmission device and a mixer using the same, aiming to solve the technical problems that the existing lifting device motor is prone to shaking when driving the stirring shaft to rotate, the overall device is unstable, and the motor is suspended without a supporting component to support the motor, resulting in a short service life of the motor.

[0005] To achieve the above-mentioned object, the present invention proposes a lifting transmission device, comprising a mounting bracket, a transmission box, a driving member, a hydraulic column, and a stirring shaft, wherein the stirring shaft and the driving member are both fixed to the transmission box, and the stirring shaft is drivingly connected to the output shaft of the driving member within the transmission box, and the hydraulic columns are arranged in pairs on both sides of the mounting bracket, and the top ends of the hydraulic columns are fixed to the outside of the transmission box, so that when the hydraulic columns are raised or lowered, they can drive the transmission box, the driving member, and the stirring shaft to rise and fall simultaneously;

[0006] The output shaft axis of the driving member is located on the center connecting line of the hydraulic columns arranged in pairs; or

[0007] The central connecting line of the hydraulic columns arranged in pairs divides the transmission box into a first area and a second area, and the axes of the output shafts of the stirring shaft and the driving member are both located in the second area.

[0008] Preferably, the mounting bracket includes a fixing member and a bearing platform, the bearing platform is located below the driving member, and the bearing platform is used to bear the driving member when the hydraulic column drives the driving member to descend to the extreme position;

[0009] The fixing member is fixed to one end of the carrying platform, and a first groove is provided at one end of the carrying platform close to the fixing member, and the stirring shaft passes through the first groove.

[0010] Preferably, a second groove for accommodating the bottom of the driving member is provided at one end of the carrying platform away from the fixing member, so that the driving member cannot completely pass through the upper end of the second groove to reach the lower end of the second groove.

[0011] Preferably, it also includes a guide column, and through parts are provided on both sides of the transmission box. The top of the guide column passes through the through parts. Mounting holes are provided on both sides of the mounting bracket, and the bottom end of the guide column is installed in the mounting hole.

[0012] Preferably, the transmission box is an inverted saddle-shaped structure, and the through portion is located at a position where the transmission box has the maximum height.

[0013] Preferably, a connecting piece is further included, and both ends of the connecting piece are connected to the top end of the guide column.

[0014] Preferably, the end of the transmission box close to the stirring shaft is semi-elliptical, and the length ratio of the short axis L1 to the long axis L2 of the semi-elliptical cross-section of the transmission box is 1:1.4-1.5.

[0015] Preferably, the mounting bracket is made of metal.

[0016] Preferably, the outer wall of the stirring shaft is further provided with a shaft sleeve.

[0017] In addition, the present invention also proposes a mixer using a lifting transmission device as described in any one of the above items, including a mixing chamber and a cover body, the cover body being openably arranged at the top end of the mixing chamber, the mixing shaft passing through the cover body and extending into the mixing chamber, and the mounting bracket being arranged on the cover body.

[0018] The lifting transmission device of the present invention and the mixer using the same have the following beneficial effects:

[0019] 1. By changing the installation position of the driving member on the transmission box, the overall stability of the lifting transmission device is adjusted. When the output shaft axis of the driving member is located on the center line of the hydraulic column, since the installation position of the driving member is close to the center of the lifting transmission device, the overall installation area of ​​the driving member, the stirring shaft and the hydraulic column is reduced in length, and the center of gravity of the driving member is close to the center line of the hydraulic column. When the driving member drives the stirring shaft to rotate, the device as a whole is relatively stable. When the axis of the stirring shaft and the output shaft of the driving member are both located in the second area, the center of the driving member moves further toward one end close to the stirring shaft, and the center of gravity of the lifting transmission device as a whole is located in the second area, the operation is more stable, and the lifting transmission device will not shake.

[0020] 2. The mounting bracket includes a bearing platform. When the driving part descends with the hydraulic column, the bearing platform can support the driving part. At this time, the large transmission force generated when the driving part drives the agitator shaft to rotate can also be offset by the bearing platform, further avoiding the shaking of the driving part. In addition, the driving part has a longer service life under the support of the bearing platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of an embodiment of a lifting transmission device of the present invention;

[0023] Figure 2 A bottom view of the lifting transmission device of the present invention;

[0024] Figure 3 A top view of the transmission box of the lifting transmission device of the present invention;

[0025] Figure 4 This is a schematic structural diagram of a mounting bracket for a lifting transmission device according to the present invention;

[0026] Figure 5 This is a schematic structural diagram of the transmission box of the lifting transmission device of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the mixer of the present invention.

[0028] Description of Figure Numbers:

[0029]

[0030]

[0031] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides a lifting transmission device. The lifting transmission device is installed in a disperser or mixer to adjust the lifting and lowering of a mixing assembly, thereby achieving more uniform dispersion and mixing of materials in the disperser or mixer. The center of gravity of the driving member 3 is located near the center connection line of the hydraulic column 41. Unlike conventional lifting transmission structures in which the driving member 3 is arranged parallel to the bottom of a long frame, this arrangement reduces the overall length of the lifting transmission device and the installation area.

[0036] In one embodiment of the present invention, Figures 1 to 6 As shown, the lifting transmission device includes a mounting bracket 1, a transmission box 2, a driving member 3, a hydraulic column 41 and a stirring shaft 5. The stirring shaft 5 and the driving member 3 are both fixed to the transmission box 2, and the stirring shaft 5 is connected to the output shaft of the driving member 3 in the transmission box 2.

[0037] The hydraulic columns 41 are arranged in pairs on both sides of the mounting bracket 1, and their top ends are fixed to the outer side of the transmission box 2, so that when the hydraulic columns 41 are raised or lowered, they can drive the transmission box 2, the driving member 3 and the stirring shaft 5 to rise or fall simultaneously, and the output shaft axis of the driving member 3 is located on the center connecting line of the paired hydraulic columns 42; or,

[0038] The center connecting line of the paired hydraulic columns 41 divides the transmission box 2 into a first area 21 and a second area 22 , and the axes of the output shafts of the stirring shaft 5 and the driving member 3 are both located in the second area 22 .

[0039] Specifically, the stirring shaft 5 and the driving member 3 of the lifting transmission device are connected in transmission, and the driving member 3 drives the stirring shaft 5 to rotate continuously to achieve stirring of the material, and the stirring shaft 5 and the driving member 3 are connected in transmission inside the transmission box 2. The transmission connection method is more stable and can isolate external dust. The hydraulic column 41 drives the transmission box 2 to rise and fall. Since the stirring shaft 5 and the driving member 3 are directly connected to the transmission box 2, the stirring shaft 5 and the driving member 3 are also lifted and lowered at the same time. At this time, the position of the bottom mounting bracket 1 is fixed and fixed above the cover 61 of the mixer. The driving member 3 can be a motor, etc. The hydraulic pump inside the hydraulic column 41 fills oil into the hydraulic column 41 to make the hydraulic column 41 rise, and drives the driving member 3, the transmission box 2 and the stirring shaft 5 to rise. When it rises to a certain height, the hydraulic pump stops to open the oil outlet solenoid valve inside the hydraulic column 41, so that the hydraulic oil level in the hydraulic column 41 drops, so that the driving member 3, the transmission box 2 and the stirring shaft 5 drop under the action of gravity. The driving member 3 is installed in an inverted form under the transmission box 2, which reduces the height of the entire lifting transmission device. The center of gravity of the lifting transmission device is not as high as that of the existing lifting device, and it is more stable and the safety factor is also improved.

[0040] When the output shaft center of the driving member 3 is located on the center line of the hydraulic column 41, since the installation position of the driving member 3 is close to the center of the lifting transmission device, the overall installation area of ​​the driving member 3, the stirring shaft 5 and the hydraulic column 41 is reduced in length, and at this time the center of gravity of the driving member 3 is close to the center connection line of the hydraulic column 41. When the driving member 3 drives the stirring shaft 5 to rotate, the overall device is relatively stable. When the stirring shaft 5 and the output shaft center of the driving member 3 are both located in the second area 22, the center of the driving member 3 moves further toward one end close to the stirring shaft 5, and the overall center of gravity of the lifting transmission device is located in the second area 22, the operation is more stable, and the lifting transmission device will not shake.

[0041] Furthermore, the mounting bracket 1 includes a fixing member 11 and a supporting platform 12. The supporting platform 12 is located below the driving member 3. When the hydraulic column 41 drives the driving member 3 to descend to the extreme position, the supporting platform 12 is used to support the driving member 3.

[0042] The fixing member 11 is fixed to one end of the carrying platform 12 , and a first groove 121 is provided at one end of the carrying platform 12 close to the fixing member 11 , and the stirring shaft 5 is disposed through the first groove 121 .

[0043] In this way, the mounting bracket 1 includes a carrying platform 12 and a fixing part 11 for auxiliary fixing one end of the carrying platform 12. The fixing part 11 is vertically arranged at one end of the carrying platform 12, and the connection method is more stable. A first groove 121 is provided on the carrying platform 12 for the stirring shaft 5 to pass through, and when the driving part 3 descends with the hydraulic column 41, when the driving part 3 descends to the lowest point, the carrying platform 12 can support the bottom of the driving part 3. At this time, the lifting transmission device is turned on, and the driving part 3 drives the stirring shaft 5 to rotate. Even if the driving part 3 generates a large transmission force, it can be offset by the carrying platform 12, further avoiding the shaking of the driving part 3. The driving part 3 has a longer service life under the support of the carrying platform 12.

[0044] Furthermore, the end of the carrying platform 12 away from the fixing member 11 is provided with a second groove 122 for accommodating the bottom of the driving member 3, so that the driving member 3 cannot completely pass through the upper end of the second groove 122 to reach the lower end of the second groove 122. In this way, in addition to using the above-mentioned whole piece of channel steel to support the driving member 3, the carrying platform 12 can also provide a second groove 122 in the middle of the carrying platform 12 to engage the driving member 3. In this case, the width of the second groove 122 needs to be smaller than the width of the driving member 3. Since the diameter of the bottom of the driving member 3, i.e., the motor, is usually smaller than the diameter of the middle part, when the driving member 3 descends, the groove 122 can catch part of the bottom area of ​​the driving member 3 to play a supporting role. With this arrangement, the production materials and costs of the supporting platform can be further reduced.

[0045] Furthermore, guide columns 42 are included. Through-holes 23 are provided on both sides of the transmission case 2. The top ends of the guide columns 42 pass through the through-holes 23. Mounting holes 123 are provided on both sides of the mounting bracket 1. The bottom ends of the guide columns 42 are mounted within the mounting holes 123. Specifically, the guide columns 42 ensure that the hydraulic column 41 remains in a vertical direction during both ascent and descent. The guide columns 42 and the hydraulic rod 41 are symmetrically arranged on both sides of the transmission case 2. The drive member 3 can be surrounded by the guide columns 42 and the hydraulic column 41, which are arranged in pairs on both sides of the mounting bracket 1. This makes the installation and fixation of the transmission case 2 more stable and secure.

[0046] Furthermore, the transmission box 2 is an inverted saddle-shaped structure, and the through-hole 23 is located at the position where the transmission box 2 is at its maximum height. In this way, since the transmission box 2 needs to withstand not only its own gravity but also the gravity from the driving member 3 and the stirring shaft 5, when the hydraulic rod 41 drives the transmission box 2 to rise and fall, in addition to the hydraulic rod 41 needing to provide a large gravity, the guide column 42 is also required to limit the lifting movement of the transmission box 2 to remain in the vertical direction without deviation. Therefore, if the height of the through-hole 23 is set to be larger, the installation area of ​​the guide column 42 and the transmission box 2 will be larger, ensuring that the transmission box 2 can be accurately lifted and lowered vertically without any angle deviation despite its large mass, and the service life of the guide column 42 is also extended.

[0047] Furthermore, a connecting member 43 is included, and both ends of the connecting member 43 are connected to the top end of the guide column 42. It can be understood that the connecting member 43 in this embodiment further defines the direction of the guide column 42. The connecting member 43 and the mounting bracket 1 are respectively fixed to the two ends of the guide column 42 arranged opposite to each other, so that the guide column 42 remains in the vertical direction without changing, thereby preventing any deviation of the transmission box 2 during the lifting movement.

[0048] Furthermore, the end of the transmission box 2 near the stirring shaft 5 is semi-elliptical, and the length ratio of the short axis L1 to the long axis L2 of the semi-elliptical cross-section of the transmission box 2 is 1:1.4-1.5. In this way, the new transmission box 2 structure set up in this way abandons the previous rectangular shape structure in appearance, reduces the installation area, and reduces production costs. Moreover, such a design can avoid the shaking problem of the previous rectangular transmission box 2 during installation. Since the transmission box 2 at one end of the stirring shaft 5 is elliptical, and the driving member 3 is semi-surrounded by the hydraulic column 41, the guide column 42 and the stirring shaft 5, and the length ratio of the short axis L1 to the long axis L2 of the semi-elliptical cross-section of the transmission box 2 is 1:1.4-1.5, the center of gravity of the transmission box 2 is closer to the center line of the hydraulic column 41. When the driving member 3 drives the stirring shaft 5 to operate, the entire transmission box 2 is more stable, and the safety factor is improved.

[0049] Furthermore, the mounting bracket 1 is made of metal. It is understood that since the mounting bracket 1 needs to fix the hydraulic column 41 and the guide column 42, using a known metal material can ensure a more stable fixation of the hydraulic column 41 and the guide column 42 and a longer service life. The fixing member 11 and the supporting platform 12 can be channel steel in actual production.

[0050] Furthermore, the outer wall of the stirring shaft 5 is further provided with a shaft sleeve 51. In this way, the shaft sleeve 51 protects the stirring shaft 5 from excessive wear during rotation. Since the stirring shaft 5 needs to rotate continuously for a long time during actual use, the wear of the shaft sleeve 51 provided on the outer wall of the stirring shaft 5 can be transferred to the shaft sleeve 51. When the wear is excessive, the shaft sleeve 51 can be replaced, thereby extending the service life of the stirring shaft 5.

[0051] In addition, the present invention also proposes a mixer using any of the above-mentioned lifting transmission devices, including a mixing chamber 6 and a cover body 61, the cover body 61 is arranged at the top of the mixing chamber 6 in an openable and closable manner, the mixing shaft 5 passes through the cover body 61 and extends into the mixing chamber 6, and the mounting bracket 1 is arranged at the upper end of the cover body 61.

[0052] After the frame-type stirring blades or dispersion discs are installed on the stirring shaft 5, the materials are dispersed in the stirring chamber 6, and the stirring shaft 5 is lifted and lowered under the drive of the hydraulic column 41. The materials at different heights in the stirring chamber 6 can be stirred, and the stirring effect is good. The cover 61 is closed during stirring, and the cover 61 is opened after stirring is completed to pour out the materials. The first mounting frame 11 and the second mounting frame 12 are both installed above the cover 61, and the length range does not exceed the diameter of the cover 61. After the installation is completed, the first mounting frame 11 and the second mounting frame 12 will not extend to the outer end of the cover 61, affecting the use of the mixer, and the design is relatively unsightly. The outer wall of the stirring chamber 6 is also provided with a fixing frame 62 for fixing the mixer. The fixing frame 62 is used to fix the mixer so that the mixer remains in a vertical state to facilitate the mixing of materials.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lifting transmission device, characterized in that: It includes a mounting bracket, a transmission box, a driving member, a hydraulic column and a stirring shaft, wherein the stirring shaft and the driving member are both fixed to the transmission box, and the stirring shaft is drivingly connected to the output shaft of the driving member in the transmission box; The hydraulic columns are arranged in pairs on both sides of the mounting bracket, and the top ends of the hydraulic columns are fixed to the outer sides of the transmission box, so that when the hydraulic columns are raised or lowered, they can drive the transmission box, the driving member and the stirring shaft to rise or fall simultaneously; The output shaft of the driving member is located on the central connecting line of the hydraulic columns arranged in pairs; or The central connecting line of the hydraulic columns arranged in pairs divides the transmission box into a first area and a second area, and the stirring shaft and the output shaft of the driving member are both located in the second area; The mounting bracket includes a fixing member and a bearing platform, wherein the bearing platform is located below the driving member, and the bearing platform is used to bear the driving member when the hydraulic column drives the driving member to descend to the most extreme position; The fixing member is fixed to one end of the carrying platform, and a first groove is provided at one end of the carrying platform close to the fixing member, and the stirring shaft passes through the first groove; A second groove for accommodating the bottom of the driving member is provided at one end of the carrying platform away from the fixing member, so that the driving member cannot completely pass through the upper end of the second groove to reach the lower end of the second groove; It also includes a guide column, and through parts are provided on both sides of the transmission box, and the top end of the guide column passes through the through parts; The transmission box is an inverted saddle-shaped structure, and the through-hole is located at the position where the transmission box has the maximum height; One end of the transmission box close to the stirring shaft is semi-elliptical, and the length ratio of the short axis L1 to the long axis L2 of the semi-elliptical cross-section of the transmission box is 1:1.4-1.

5.

2. The lifting transmission device according to claim 1, characterized in that: Both sides of the mounting bracket are provided with mounting holes, and the bottom end of the guide column is mounted in the mounting hole.

3. The lifting transmission device according to claim 2, characterized in that: It also includes a connecting piece, both ends of which are connected to the top end of the guide column.

4. The lifting transmission device according to claim 1, characterized in that: The mounting bracket is made of metal.

5. The lifting transmission device according to claim 1, characterized in that: The outer wall of the stirring shaft is also provided with a shaft sleeve.

6. A mixer using the lifting transmission device according to any one of claims 1 to 5, characterized in that: The invention comprises a stirring chamber and a cover body, wherein the cover body is arranged at the top of the stirring chamber in an openable and closable manner, the stirring shaft passes through the cover body and extends into the stirring chamber, and the mounting bracket is arranged on the cover body.

Images