CN211517963U

CN211517963U - Concrete mixer

Info

Publication number: CN211517963U
Application number: CN201922046265.6U
Authority: CN
Inventors: 曾丽君
Original assignee: Xianyang Dongdayang Concrete Co ltd
Current assignee: Xianyang Dongdayang Concrete Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-09-18
Anticipated expiration: 2029-11-23

Abstract

The utility model relates to a concrete mixer, which comprises a frame, the churn of setting in the frame, set up two sets of (mixing) shafts and drive (mixing) shaft pivoted actuating mechanism in the churn, two (mixing) shaft parallel arrangement and along churn length direction's axis mirror image distribution, the churn is provided with the bearing with the (mixing) shaft junction, the bearing inner circle is located the integrative cardboard that is provided with the joint (mixing) shaft on the extension of churn inner chamber, the cover is equipped with the spacing ring on the cardboard, be provided with the chamfer on the spacing ring, the chamfer can make the spacing ring rotate from top to bottom along its axis direction, it is provided with the spacing bolt that can with the cardboard joint to pass the spacing ring, the (mixing) shaft is provided with the bead along length direction, be provided with the stirring arm on the (mixing) shaft, the. The utility model discloses the stirring arm cover is established on the detachable (mixing) shaft, has simple structure, and the installation is convenient, does benefit to the effect of changing the maintenance.

Description

Concrete mixer

Technical Field

The utility model belongs to the technical field of the technique of concrete processing equipment and specifically relates to a concrete mixer is related to.

Background

A concrete mixer is a machine for mixing and stirring cement, gravel aggregate and water into a concrete mixture. At present, in the concrete industry, the stirring equipment used for producing common concrete is basically a double horizontal shaft concrete mixer. The concrete double-horizontal-shaft mixer consists of a frame, a mixing device which is arranged on the frame and is provided with an anti-wear lining plate, a transmission system for driving the mixing device to work and an electrical appliance control system.

Chinese patent publication No. CN201736337U discloses a stirring device for a double horizontal shaft concrete mixer and a double horizontal shaft mixer, wherein the stirring device comprises: the first stirring shaft component and the second stirring shaft component are matched with each other and arranged in parallel, each stirring shaft component comprises a stirring shaft and eight stirring units, the phase angle difference between the first stirring arm and the fifth stirring arm of the first stirring shaft component is 60 degrees, the phase angle difference between the fifth stirring arm and the eighth stirring arm is 180 degrees, 60 degrees and 180 degrees in sequence, the phase angles of the first stirring arm and the fourth stirring arm of the second stirring shaft component are the same as those of the fifth stirring arm and the eighth stirring arm of the first stirring shaft component in sequence, and the phase angles of the fifth stirring arm and the eighth stirring arm are the same as those of the first stirring arm and the fourth stirring arm of the first stirring shaft component in sequence. The double-horizontal-shaft stirrer comprises a horizontal stirring cylinder, wherein the stirring device is arranged in the horizontal stirring cylinder.

The above prior art solutions have the following drawbacks: fixedly connected stirring arm on the (mixing) shaft for stirring arm and (mixing) shaft can rotate with one heart, but when the wearing and tearing of stirring arm need be changed, need maintenance personal to get into and dismantle the change one by one stirring arm in the churn, it is inconvenient to change, and efficiency is lower.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a concrete mixer, its stirring arm cup joints on the detachable (mixing) shaft, can wholly shift out the mixer with the (mixing) shaft in order to carry out the swift change of stirring arm, has simple structure, and the installation is convenient, does benefit to the advantage of changing the maintenance.

The above object of the present invention can be achieved by the following technical solutions:

a concrete mixer comprises a frame, a mixing drum arranged on the frame, two groups of mixing shafts arranged in the mixing drum and a driving mechanism for driving the mixing shafts to rotate, wherein the two mixing shafts are arranged in parallel and distributed along the axis mirror image of the mixing drum in the length direction, a bearing is arranged at the joint of the mixing drum and the mixing shafts, a clamping plate which can be clamped with the mixing shafts is integrally arranged on the extending section of the inner cavity of the mixing drum in the bearing inner ring, a limiting ring is sleeved on the clamping plate and provided with a chamfer, the chamfer can enable the limiting ring to rotate up and down in the axis direction, a limiting bolt which can be clamped with the clamping plate is arranged on the limiting ring in a penetrating way, a convex edge is arranged on the mixing shaft in the length direction, a mixing arm is arranged on the mixing shaft, and a sleeve ring is arranged at one end, close to the, and the inner wall of the lantern ring is provided with a groove matched with the convex edge.

By adopting the technical scheme, when the stirring arm is seriously worn and needs to be replaced, the stirring shaft is connected by using the lifting appliance, the limiting bolt is adjusted, the limiting bolt is separated from the clamping plate, force is applied to the limiting ring, the limiting ring inclines along the horizontal diameter direction of the limiting ring, so that the lap joint part of the stirring shaft and the clamping plate is completely exposed, the lifting appliance is driven, the stirring shaft is lifted out of the stirring cylinder by the lifting appliance and is placed on the maintenance frame, the stirring arm is sequentially pulled out from the stirring shaft along the length direction of the convex edge, the worn stirring arm is disassembled, the stirring arms are respectively installed from two ends of the stirring shaft after the disassembly is finished, the groove is aligned with the convex edge during the installation, force is applied to the stirring arm, the stirring arm slides to the middle part of the stirring shaft along the length direction of the convex edge, the stirring arm slides to the middle part of the stirring shaft or is abutted against, the stirring shaft is lapped on the clamping plate, force is applied to the limiting ring, the limiting ring is aligned with the screw hole in the clamping plate, the limiting bolt is adjusted to be inserted into the screw hole in the clamping plate, the position of the limiting ring is fixed, clamping of the stirring shaft is completed, and replacement of the stirring arm is completed; the connection structure of the designed stirring shaft and the bearing facilitates the disassembly of the stirring shaft, the installation is simple, and the designed convex edges and the designed grooves are mutually matched, so that the stirring arm can be conveniently disassembled while rotating coaxially with the stirring shaft, and the structure is simple and beneficial to the replacement and maintenance of the stirring arm.

The present invention may be further configured in a preferred embodiment as: the stirring device is characterized in that a wear-resistant shield is arranged on the inner side wall of the stirring cylinder, the wear-resistant shield is covered on the outer side of the clamping plate, a through hole for the stirring shaft to pass through is formed in the wear-resistant shield, and a rotary sealing ring is arranged between the stirring shaft and the wall of the through hole.

By adopting the technical scheme, the designed wear-resistant protective cover protects the clamping plate and the limiting ring, prevents the clamping plate and the limiting ring from being worn due to concrete stirring, prolongs the service life of the clamping plate and the limiting ring, and ensures the clamping precision of the clamping plate in clamping the stirring shaft; the rotary seal ring of design prevents that the concrete thick liquid from promoting the protection effect of wear-resisting guard shield in the wear-resisting guard shield inner chamber of infiltration between (mixing) shaft and the through-hole pore wall.

The present invention may be further configured in a preferred embodiment as: the wear-resisting guard shield is followed the radial direction of through-hole divide into the canned paragraph and can dismantle the connection and be in the dismantlement section on the canned paragraph, the canned paragraph fixed connection be in on the lateral wall of churn.

By adopting the technical scheme, before the stirring shaft is disassembled, the disassembling section is adjusted to separate the disassembling section from the fixing section, the clamping plate, the limiting ring and part of the stirring shaft are not sealed, and then the stirring shaft is disassembled; the dismantlement section and the fixed section of design cooperate, protect cardboard and spacing ring, simultaneously, the (mixing) shaft of being convenient for is dismantled.

The present invention may be further configured in a preferred embodiment as: and sealing strips are arranged on the side edge of the disassembly section in contact with the stirring cylinder and the side edge of the disassembly section in contact with the fixed section.

Through adopting above-mentioned technical scheme, the sealing strip of design for wear-resisting guard shield is whole can keep sealed, prevents during concrete slurry gets into wear-resisting guard shield inner chamber, promotes wear-resisting guard shield's protection effect.

The present invention may be further configured in a preferred embodiment as: an opening is formed in the upper portion of the mixing drum, a cover plate is arranged on the opening of the mixing drum, and a feeding hole is formed in the cover plate.

By adopting the technical scheme, when the stirring arm needs to be replaced, the cover plate is adjusted, so that the cover plate is opened, the stirring shaft is lifted out, the stirring arm is replaced, after the replacement is finished, the stirring shaft is lifted back and installed, and after the installation is finished, the cover plate is adjusted, so that the stirring drum is closed; the design has the apron, hangs out the churn when being convenient for the (mixing) shaft to change, does benefit to the (mixing) shaft dismouting.

The present invention may be further configured in a preferred embodiment as: the bearing is inserted with a rotating shaft, the rotating shaft and the stirring shaft are concentrically arranged, one end of the rotating shaft, which is far away from the bearing, is connected with a transmission mechanism, and the transmission mechanism is connected with the driving mechanism.

By adopting the technical scheme, the driving mechanism is adjusted to work, the driving mechanism drives the transmission mechanism to work, the transmission mechanism drives the rotating shaft to rotate, the rotating shaft drives the bearing inner ring to rotate, the bearing inner ring drives the integrally arranged clamping plate to rotate, and the clamping plate drives the stirring shaft to rotate so as to stir concrete; the designed rotating shaft, the transmission mechanism and the driving mechanism are mutually matched to drive the stirring shaft to rotate, so that the stirring shaft is convenient to use.

The present invention may be further configured in a preferred embodiment as: the transmission mechanism comprises two groups of first gears which are concentrically arranged with the rotating shaft, two groups of second gears are arranged between the first gears, the two groups of second gears and the other first gear are sequentially meshed, and one of the second gears is fixedly connected with the driving mechanism.

By adopting the technical scheme, the driving mechanism is adjusted to work, the driving mechanism drives a second gear to rotate, the two groups of first gears are driven to rotate in opposite directions, the first gears respectively drive the connected rotating shafts to rotate, and further drive the stirring shaft to rotate for stirring; the designed first gear and the second gear are mutually matched, and the two groups of stirring shafts are driven to rotate in opposite directions by the driving mechanism, so that the production and use cost of the equipment is reduced.

The present invention may be further configured in a preferred embodiment as: the driving mechanism comprises a speed reducing motor positioned on the rack, and a driving shaft of the speed reducing motor is fixedly connected with the second gear and concentrically arranged.

Through adopting above-mentioned technical scheme, the gear motor of design provides drive power for the rotation of second gear, simultaneously, restricts the slew velocity, more accords with mixer operation requirement, practices thrift the space.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the designed connecting structure of the stirring shaft and the bearing is convenient for the disassembly of the stirring shaft, the installation is simple, the designed convex edges and the designed grooves are matched with each other, so that the stirring arm can rotate coaxially with the stirring shaft and is convenient for the disassembly of the stirring arm, the structure is simple, and the replacement and maintenance of the stirring arm are facilitated;

2. the designed wear-resistant shield protects the clamping plate and the limiting ring, prevents the clamping plate and the limiting ring from being worn due to concrete stirring, prolongs the service life of the clamping plate and the limiting ring, and ensures the clamping precision of the clamping plate in clamping the stirring shaft;

3. the designed first gear and the second gear are mutually matched, and the two groups of stirring shafts are driven to rotate in opposite directions by the driving mechanism, so that the production and use cost of the equipment is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the concrete mixer of the present invention.

FIG. 2 is a schematic view showing a partial structure of a concrete mixer according to the present invention, and is intended to show an inner wall structure of the mixer.

Fig. 3 is an exploded view of the connecting structure of the stirring shaft of the present invention, which is intended to show the connection relationship of the stirring shaft.

In the figure, 1, a frame; 2. a mixing drum; 21. a cover plate; 211. a feed inlet; 3. a stirring shaft; 31. a rib; 4. a stirring arm; 41. a collar; 411. a groove; 5. a bearing; 51. clamping a plate; 52. a limiting ring; 521. chamfering; 53. a limit bolt; 54. a rotating shaft; 6. a wear-resistant shield; 61. a fixed section; 62. disassembling the section; 63. a through hole; 631. rotating the sealing ring; 64. a sealing strip; 7. a transmission mechanism; 71. a first gear; 72. a second gear; 8. a drive mechanism; 81. a speed reducing motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a concrete mixer, including frame 1, the welding churn 2 in frame 1 and can dismantle two sets of (mixing) shaft 3 of connecting in churn 2, two (mixing) shaft 3 parallel arrangement just distribute along 2 length direction's of churn axis mirror image, and 2 top openings of churn set up, and are connected with apron 21 on the opening of churn 2, install feed inlet 211 on the apron 21. The outer side wall of the mixing drum 2 is provided with a driving mechanism 8 for driving the mixing shaft 3 to rotate and a transmission mechanism 7 matched with the driving mechanism 8, the transmission mechanism 7 is connected with the mixing shaft 3 through a rotating shaft 54, the transmission mechanism 7 comprises two groups of first gears 71 concentrically arranged with the rotating shaft 54, two groups of second gears 72 are arranged between the two first gears 71, the two groups of second gears 72 and the other first gear 71 are sequentially meshed, and one second gear 72 is fixedly connected with the driving mechanism 8. The driving mechanism 8 comprises a speed reducing motor 81 positioned on the frame 1, and a driving shaft of the speed reducing motor 81 is fixedly connected with and concentrically arranged with a second gear 72.

Referring to fig. 3, a bearing 5 is arranged at the joint of the mixing drum 2 and the mixing shaft 3, the bearing 5 is arranged through the side wall of the mixing drum 2, and the outer ring of the bearing 54 is abutted against the stirring cylinder 2, the rotating shaft 5 is inserted in the inner ring of the bearing 5, the rotating shaft 54 and the stirring shaft 3 are concentrically arranged, one end of the rotating shaft 54, which is far away from the bearing 5, is connected with a transmission mechanism 7, the inner ring of the bearing 5 is positioned on the extension section of the inner cavity of the stirring cylinder 2 and is integrally connected with a clamping plate 51 which can be clamped with the stirring shaft 3, a limiting ring 52 is sleeved on the clamping plate 51, a chamfer 521 is arranged on the limiting ring 52, the limiting ring 52 can rotate up and down along the axial direction of the limiting ring 52, a limiting bolt 53 which can be clamped with the clamping plate 51 penetrates through the limiting ring 52 and is in threaded connection, a convex rib 31 is integrally arranged on the stirring shaft 3 along the length direction, a stirring arm 4 is arranged on the.

Referring to fig. 3, a wear-resistant shield 6 is mounted on the inner side wall of the mixing drum 2, the wear-resistant shield 6 is covered outside the chuck plate 51 and is divided into a fixing section 61 and a detaching section 62 connected to the fixing section 61 by a bolt along the radial direction of the through hole 63, and the fixing section 61 is fixedly connected to the side wall of the mixing drum 2. Dismantle the side that section 62 and churn 2 contact and dismantle all bond on the side that section 62 and fixed section 61 contact and have sealing strip 64, offer the through-hole 63 that supplies (mixing) shaft 3 to pass on the wear-resisting guard shield 6, install rotary seal 631 between (mixing) shaft 3 and the through-hole 63 pore wall.

The implementation principle of the embodiment is as follows: when the stirrer works, the speed reduction motor 81 is adjusted, the speed reduction motor 81 works, the speed reduction motor 81 drives the second gear 72 to rotate, through transmission, the two groups of first gears 71 rotate in opposite directions, the first gears 71 respectively drive the rotating shafts 54 connected with each other to rotate, the rotating shafts 54 drive the inner rings of the bearings 5 to rotate, the inner rings of the bearings 5 drive the clamping plates 51 to rotate, and the clamping plates 51 further drive the stirring shaft 3 to rotate for stirring.

When the stirring arm 4 is seriously worn and needs to be replaced, the cover plate 21 is adjusted, the cover plate 21 is opened, the lifting appliance is used for connecting the stirring shaft 3, the connecting bolt between the disassembly section 62 and the fixed section 61 is disassembled, the force is applied to the disassembly section 62, the disassembly section 62 is separated from the fixed section 61, and the clamping plate 51, the limiting ring 52 and part of the stirring shaft 3 are not sealed any more. Then adjust limit bolt 53, limit bolt 53 and cardboard 51 separation, to the spacing collar 52 application of force, spacing collar 52 inclines around the horizontal diameter direction of spacing collar 52 for the (mixing) shaft 3 is all exposed with cardboard 51 overlap joint part, drives the hoist, and the hoist hangs (mixing) shaft 3 out of churn 2, and places on the maintenance frame. The rotary sealing ring 631 is detached, the stirring arms 4 are sequentially pulled out from the stirring shaft 3 along the length direction of the rib 31, the worn stirring arms 4 are detached, after detachment is completed, the stirring arms 4 are respectively installed from the two ends of the stirring shaft 3, the groove 411 is aligned with the rib 31 during installation, force is applied to the stirring arms 4, the stirring arms 4 slide to the middle of the stirring shaft 3 along the length direction of the rib 31, the stirring arms 4 slide to the middle of the stirring shaft 3 or abut against other stirring arms 4, the stirring arms 4 are sequentially installed, then the rotary sealing ring 631 is installed, after installation, the stirring shaft 3 is hung back to the stirring barrel 2 by using a hanger, the stirring shaft 3 is lapped on the clamping plate 51, force is applied to the limiting ring 52, the limiting ring 52 is aligned with the screw hole on the clamping plate 51, the limiting bolt 53 is adjusted, the limiting bolt 53 is inserted into the screw hole on the clamping plate 51, and the position of, completing the clamping connection of the stirring shaft 3. The detachable section 62 is fastened on the fixed section 61 again, a connecting bolt is installed between the detachable section 62 and the fixed section 61, the detachable section 62 and the fixed section 61 are closed, the cover plate 21 is adjusted, the cover plate 21 is closed, and replacement of the stirring arm 4 is completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a concrete mixer, is in including frame (1), setting churn (2), setting in frame (1) are in two sets of (mixing) shaft (3) and drive in churn (2) drive mechanism (8) of (mixing) shaft (3) pivoted, two (mixing) shaft (3) parallel arrangement just follows churn (2) length direction's axis mirror image distributes, its characterized in that: a bearing (5) is arranged at the joint of the mixing drum (2) and the mixing shaft (3), a clamping plate (51) which can be clamped with the stirring shaft (3) is integrally arranged on the extension section of the inner ring of the bearing (5) positioned in the inner cavity of the stirring cylinder (2), a limiting ring (52) is sleeved on the clamping plate (51), a chamfer (521) is arranged on the limiting ring (52), the chamfer (521) can enable the limiting ring (52) to rotate up and down along the axial direction of the limiting ring, a limiting bolt (53) which can be clamped with the clamping plate (51) is arranged through the limiting ring (52), the stirring shaft (3) is provided with a convex rib (31) along the length direction, the stirring shaft (3) is provided with a stirring arm (4), a lantern ring (41) is arranged at one end of the stirring arm (4) close to the stirring shaft (3), and a groove (411) matched with the rib (31) is formed in the inner wall of the lantern ring (41).

2. The concrete mixer of claim 1, wherein: be provided with wear-resisting guard shield (6) on the inside wall of churn (2), wear-resisting guard shield (6) cover is located cardboard (51) outside, be provided with the confession on wear-resisting guard shield (6) through-hole (63) that (mixing) shaft (3) passed, mixing (mixing) shaft (3) with be provided with between through-hole (63) the pore wall rotary seal (631).

3. A concrete mixer according to claim 2, wherein: wear-resisting guard shield (6) are followed the radial direction of through-hole (63) divide into canned paragraph (61) and can dismantle the connection and be in canned paragraph (61) last dismantlement section (62), canned paragraph (61) fixed connection be in on the lateral wall of churn (2).

4. A concrete mixer according to claim 3, wherein: the side of dismantling section (62) and churn (2) contact with dismantle section (62) and all be provided with sealing strip (64) on the side of dismantling section (62) and fixed section (61) contact.

5. The concrete mixer of claim 1, wherein: an opening is formed in the upper portion of the mixing drum (2), a cover plate (21) is arranged on the opening of the mixing drum (2), and a feeding hole (211) is formed in the cover plate (21).

6. The concrete mixer of claim 1, wherein: a rotating shaft (54) is inserted into the bearing (5), the rotating shaft (54) and the stirring shaft (3) are concentrically arranged, one end, far away from the bearing (5), of the rotating shaft (54) is connected with a transmission mechanism (7), and the transmission mechanism (7) is connected with the driving mechanism (8).

7. The concrete mixer of claim 6, wherein: the transmission mechanism (7) comprises two sets of first gears (71) which are concentrically arranged with the rotating shaft (54), two sets of second gears (72) are arranged between the first gears (71), the two sets of second gears (72) and the other first gear (71) are sequentially meshed, and the second gear (72) is fixedly connected with the driving mechanism (8).

8. The concrete mixer of claim 7, wherein: the driving mechanism (8) comprises a speed reducing motor (81) positioned on the rack (1), and a driving shaft of the speed reducing motor (81) is fixedly connected with the second gear (72) and is concentrically arranged.