CN211030608U

CN211030608U - Concrete mixer

Info

Publication number: CN211030608U
Application number: CN201921651062.3U
Authority: CN
Inventors: 张建国; 张暄; 王鹏利
Original assignee: Beijing Road New Asphalt Concrete Co ltd
Current assignee: Beijing Road New Asphalt Concrete Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-07-17
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a concrete mixer, its technical scheme main points are: including the (mixing) shaft with fix at half first arm and half second arm that the (mixing) shaft is global, be provided with the support arm on half first arm, set up the fixed orifices to support arm end fixing on half first arm, penetrate a screw rod in the fixed orifices of half first arm, the screw rod has a stopper that the restriction screw rod breaks away from the fixed orifices towards the tip rigid coupling of half first arm, the one end of support arm seted up one with screw rod complex screw hole, half first arm is located the locating hole side-open and is equipped with the gliding hole that pierces through the fixed orifices, set up the counterpoint hole that corresponds with the gliding hole on the terminal surface that the threaded hole was opened to the support arm, the gliding movement is connected with the locating lever that together the card goes into the gliding hole and counterpoint downthehole, and the locating lever touches on the outer peripheral face of. The utility model has the advantages that: the replacement speed of the supporting arm is improved, and the maintenance time of the supporting arm is reduced.

Description

Concrete mixer

Technical Field

The utility model relates to a concrete equipment field, concretely relates to concrete mixer.

Background

A concrete mixer is a machine for mixing and stirring cement, gravel aggregate and water into a concrete mixture. The device mainly comprises a mixing barrel, a feeding and discharging mechanism, a water supply system, a prime motor, a transmission mechanism, a frame, a supporting device and the like. According to working properties, the method is divided into a batch type (batch type) and a continuous type; according to the stirring principle, the method is divided into a self-falling type method and a forced type method; the device is divided into a fixed type and a movable type according to the installation mode; dividing a tilting type and a non-tilting type according to a discharging mode; according to the structure of the mixing drum, the mixing drum is divided into a pear type, a drum type, a double cone, a disc vertical shaft type, a circular groove horizontal shaft type and the like.

A conventional concrete mixer, as shown in fig. 1 and 2, includes a mixer housing 1, two mixer shafts 11 disposed in the mixer housing 1, and a driving motor 12 disposed outside the mixer housing 1 for driving the two mixer shafts 11 to rotate. The circumferential surface of the stirring shaft 11 is provided with a plurality of blade assemblies 2 for stirring concrete. Blade subassembly 2 includes first half arm 21 and second half arm 22, first half arm 21 and second half arm 22 pass through bolt and nut to be fixed on the outer peripheral face of (mixing) shaft 11, be provided with support arm 23 on the first half arm 21, the end of support arm 23 is provided with stirring vane 24, the coaxial rigid coupling of one end of support arm 23 has a screwed pipe 91, set up the fixed orifices 211 that holds screwed pipe 91 and penetrate on the first half arm 21, and threaded connection has a pair of support arm 23 and the fixed cooperation nut 92 of first half arm 21 on the support arm 23 screwed pipe 91.

If damage back appears in the support arm 23 during operation, the staff need dismantle the bolt, the nut of half first arm 21 and half second arm 22 reciprocal anchorage to take off half first arm 21, then dismantle the inside cooperation nut 92 of half first arm 21, can dismantle support arm 23, and the operation is very loaded down with trivial details, has prolonged the change time to support arm 23.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a concrete mixer, its advantage has improved the change speed to the support arm, has reduced the maintenance time to the support arm.

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

the utility model provides a concrete mixer, includes the (mixing) shaft and fixes at half first arm and the half second arm that the (mixing) shaft is global, is provided with the support arm on half first arm, sets up the fixed orifices to support arm end fixing on half first arm, penetrate a screw rod in the fixed orifices of half first arm, the screw rod has a stopper that the limiting screw breaks away from the fixed orifices towards the tip rigid coupling of half first arm, one and screw rod complex screw hole has been seted up to the one end of support arm, half first arm is located the locating hole side-open and is equipped with the slide opening that pierces through the fixed orifices, set up an counterpoint hole that corresponds with the slide opening on the terminal surface that the threaded hole was opened to the support arm, the slide opening internal slipping is connected with the locating lever that blocks into the slide opening together and counterpoint downthehole, and the locating lever touches on.

Through the technical scheme, if the supporting arm is damaged, a worker can unscrew and fix the bolts and nuts of the first half arm and the second half arm to leave a gap between the first half arm and the stirring shaft, and the positioning rod is separated from the alignment hole of the supporting arm, so that the supporting arm is separated from the limit of the positioning inner rod, then the support arm is detached from the first half arm by screwing the screw rod and the support arm, so that the support arm is convenient to replace, a worker connects a new support arm on the screw rod by screw threads, so that the support arm and the screw rod are mutually screwed, then rotate the support arm to the state that the counterpoint hole of terminal surface and slide opening communicate each other, screw first half arm and second half arm, make locating lever one end top touch on the (mixing) shaft and make the other end enter into simultaneously slide opening and counterpoint downthehole, restricted the rotation between support arm and the screw rod, ensured the normal work of support arm. In this process, the staff need not to dismantle first half arm is whole to get off and can realize the change to the support arm, has improved change efficiency.

The utility model discloses further set up to: an elastic assembly for driving the positioning rod to be separated from the support arm alignment hole is arranged on the outer peripheral surface of the positioning rod;

the elastic component comprises a limiting ring fixedly connected to the outer peripheral surface of the end part of the stirring shaft of the positioning rod, and a compression spring sleeved on the outer peripheral surface of the positioning rod and arranged between the limiting ring and the inner wall of the first half arm.

Through above-mentioned technical scheme, after the bolt and nut of half first arm and half second arm unscrewed each other for leave the space between half first arm and the (mixing) shaft, the locating lever is under compression spring's elastic action, makes the locating lever remove towards the direction of puddler, and makes the tip of locating lever break away from to counterpoint hole card and establish, has ensured the stability of dismantling the support arm.

The utility model discloses further set up to: and a reinforcing plate is fixedly connected at the joint of the screw and the limiting block.

Through above-mentioned technical scheme, the intensity that screw rod and stopper are connected has been increased in the setting of reinforcing plate, has ensured the stability that stopper and screw rod are connected.

The utility model discloses further set up to: and a limiting groove for accommodating the reinforcing plate is formed in the edge of the first half arm fixing hole.

Through the technical scheme, the reinforcing plate is limited through the limiting groove, so that when the supporting arm and the screw rotate relatively, the stability of the supporting arm and the rotation of the screw is guaranteed, and the efficiency of mutual screwing of the supporting arm and the screw is improved.

The utility model discloses further set up to: the end part of the positioning rod, which deviates from the stirring shaft, is hemispherical.

Through the technical scheme, the end part of the positioning rod is arranged to be hemispherical, so that the positioning rod plays a role in guiding when penetrating into the alignment hole of the supporting arm, and the difficulty in butt joint of the positioning rod penetrating into the sliding hole and the alignment hole is reduced.

The utility model discloses further set up to: the circumference of the stirring shaft is fixedly connected with a positioning block, and the inner side of the second half arm is provided with a containing groove for containing the positioning block.

Through above-mentioned technical scheme, mutually supporting of locating piece and holding tank for the (mixing) shaft pivoted in-process has increased the frictional force of (mixing) shaft with half arm of second, has ensured the stirring efficiency of support arm to the concrete.

To sum up, the utility model discloses following beneficial effect has:

firstly, the replacement efficiency of the supporting arm is improved. The support arm can be replaced without completely disassembling the first half arm by workers, so that the replacement efficiency is improved;

and secondly, the screwing efficiency of the screw and the supporting arm is guaranteed. Through the limiting of the limiting groove on the reinforcing plate, when the supporting arm and the screw rotate relatively, the stability of the supporting arm and the rotation of the screw is guaranteed, and the efficiency of mutual screwing of the supporting arm and the screw is improved.

Drawings

FIG. 1 is a schematic view showing the overall structure of a concrete mixer of the prior art;

FIG. 2 is a schematic view showing a structure of a vane assembly of the background art;

FIG. 3 is a schematic view showing the overall construction of the concrete mixer according to the present embodiment;

FIG. 4 is a schematic view showing the connection state of the blade assembly and the stirring shaft;

FIG. 5 is a schematic view showing the blade assembly fixed to the circumferential surface of the stirring shaft;

FIG. 6 is a schematic structural view showing the inner side wall of the first half arm;

FIG. 7 is a schematic view showing a state where the support arm is detached;

FIG. 8 is an exploded view showing a structure for connecting the stirring vanes and the support arms;

FIG. 9 is a schematic view showing the structure of a stirring blade;

FIG. 10 is a schematic structural view showing a baffle plate;

FIG. 11 is a schematic view showing a state where the second arm half is connected to the stirring shaft.

In the figure, 1, a stirring shell; 11. a stirring shaft; 111. a jack; 12. a drive motor; 13. a blanking assembly; 2. a blade assembly; 21. a first half-arm; 211. a fixing hole; 212. caulking grooves; 213. a limiting groove; 214. a slide hole; 22. a second half-arm; 221. accommodating grooves; 23. a support arm; 231. a threaded hole; 232. aligning holes; 24. a stirring blade; 241. positioning a groove; 242. fixing the blind hole; 31. a screw; 32. a limiting block; 33. a reinforcing plate; 41. positioning a rod; 42. a limiting ring; 43. a compression spring; 51. a first clamp arm; 511. a clamping hole; 52. a second clamp arm; 61. a first spring; 62. a clamping block; 71. a baffle plate; 72. a slideway; 73. a control block; 74. a second magnet; 75. a first iron absorbing stone; 81. positioning blocks; 82. a limiting column; 91. a threaded pipe; 92. a nut is engaged.

Detailed Description

The utility model provides a concrete mixer, as shown in fig. 3, including upper end open-ended stirring shell 1, the level sets up two (mixing) shafts 11 in stirring shell 1, two (mixing) shafts 11 are parallel to each other, and the both ends of two (mixing) shafts 11 are connected with stirring shell 1's inner wall rotation, the outer rigid coupling of stirring shell 1 has two driving motor 12, two driving motor 12's output shaft and the coaxial rigid coupling of (mixing) shaft 11 that corresponds, stirring shell 1's bottom is provided with the unloading subassembly 13 with the concrete discharge that stirs, unloading subassembly 13 is prior art in the concrete mixer field, no longer describe herein.

As shown in fig. 4, each stirring shaft 11 is provided with a plurality of blade assemblies 2 along the length direction of the stirring shaft 11. The blade assembly 2 comprises an arc-shaped first half arm 21 and an arc-shaped second half arm 22, the first half arm 21 and the second half arm 22 are fastened on the circumferential surface of the stirring shaft 11 through bolts and nuts, a supporting arm 23 is arranged on the outer side wall of the first half arm 21, and a stirring blade 24 is arranged at the tail end of the supporting arm 23.

As shown in fig. 5 and 6, a fixing hole 211 penetrating through the first half arm 21 is formed in the first half arm 21, a screw 31 penetrates through the fixing hole 211, a circular limiting block 32 is fixedly connected to an end portion, facing the first half arm 21, of the screw 31, an axis of the screw 31 is perpendicular to a plane where the limiting block 32 is located, an embedding groove 212 in which the limiting block 32 is embedded is formed in an inner side wall of the first half arm 21, three triangular reinforcing plates 33 are fixedly connected to a peripheral surface of the screw 31, the reinforcing plates 33 are uniformly distributed on the peripheral surface of the screw 31, and the reinforcing plates 33 are arranged at a connection position of the screw 31 and the limiting block 32 and fixedly connected with the limiting block 32. The edge of the insertion groove 212 located at the fixing hole 211 is provided with a limit groove 213 for inserting the reinforcing plate 33, so that the screw 31 is limited to rotate freely in the fixing hole 211. The end surface of the supporting arm 23, which faces away from the stirring blade 24, is provided with a threaded hole 231 in which the screws 31 are matched with each other, and the threaded hole 231 is arranged along the length direction of the supporting arm 23.

As shown in fig. 4 and 5, when the worker connects the support arm 23 and the first half-arm 21 to each other, the reinforcement plate 33 is first embedded in the limiting groove 213, and then the support arm 23 is screwed onto the outer side wall of the first half-arm 21 by the screw connection of the support arm 23 and the screw 31, so that the end surface of the support arm 23 abuts against the outer surface of the first half-arm 21. In order to reduce the occurrence of looseness between the support arm 23 and the screw 31 in the process of rotation of the stirring shaft 11, the first half arm 21 is further provided with a pair of first half arms 21 and a positioning rod 41 for limiting the support arm 23, a sliding hole 214 for accommodating the positioning rod 41 to pass through is arranged on the bottom wall of the embedded groove 212 beside the limiting block 32, the direction of the sliding hole 214 is parallel to the axial direction of the screw 31, and a position, corresponding to the slide way 72, on the end face of the support arm 23 provided with the threaded hole 231 is provided with an aligning hole 232 communicated with the sliding hole 214. When the first half arm 21 and the second half arm 22 are fixed to the circumferential surface of the stirring shaft 11, one end of the positioning rod 41 facing the stirring shaft 11 is pressed against the outer circumferential surface of the stirring shaft 11, and drives the positioning rod 41 to slide in the sliding hole 214, and the positioning rod 41 is simultaneously located in the sliding hole 214 and the alignment hole 232, so that the relative rotation between the supporting arm 23 and the screw 31 is limited, and the stability of the supporting arm 23 rotating around the stirring shaft 11 is ensured. In order to improve the alignment efficiency of the positioning rod 41 penetrating into the alignment hole 232, the end of the positioning rod 41 facing the support arm 23 is hemispherical, so that when the positioning rod 41 penetrates into the alignment hole 232, the end of the arc of the positioning rod 41 contacts with the port of the alignment hole 232 to play a guiding role, and the alignment error between the sliding hole 214 and the alignment hole 232 is reduced.

As shown in fig. 4 and 6, if the supporting arm 23 is damaged during operation, the operator needs to replace the supporting arm 23, and first the operator loosens the bolts and nuts for fixing the first half arm 21 and the second half arm 22, so as to leave a gap between the first half arm 21 and the stirring shaft 11, and then rotates the first half arm 21 to a position right above the stirring shaft 11, so that the positioning rod 41 is disengaged from the alignment hole 232 under the action of gravity, thereby facilitating the screwing of the supporting arm 23, and making the damaged supporting arm 23 more easily disengaged from the screw 31. In order to improve the separation efficiency of the positioning rod 41 from the alignment hole 232, a limiting ring 42 is further fixedly connected to the outer peripheral surface of the positioning rod 41, the inner ring is located at the end portion, facing the stirring shaft 11, of the positioning rod 41, a compression spring 43 is further sleeved on the positioning rod 41, and the compression spring 43 is located between the limiting ring 42 and the bottom wall of the caulking groove 212. After the first half arm 21 and the stirring shaft 11 leave a gap, the positioning rod 41 slides in the direction away from the alignment hole 232 under the elastic action of the compression spring 43, and the positioning rod 41 is disengaged from the clamping of the alignment hole 232, so that the efficiency of disassembling and assembling the support arm 23 and the screw 31 is improved.

As shown in fig. 8 and 9, a first clamping arm 51, a second clamping arm 52, and a first clamping arm 51 and a second clamping arm 52 are fixedly connected to an end of the supporting arm 23 away from the first half-arm 21, the first clamping arm 51 and the second clamping arm 52 are parallel to each other, the stirring blade 24 is clamped between the first clamping arm 51 and the second clamping arm 52, and a positioning groove 241 matched with the first clamping arm 51 is formed on one side of the stirring blade 24. When the stirring blade 24 is interposed between the first and second clamping

arms

51 and 52, the first clamping arm 51 abuts against the inner wall of the positioning groove 241, thereby limiting the rotation of the stirring blade 24 in the first and second clamping

arms

51 and 52. Two circular fixed blind holes 242 are formed in the bottom wall of the positioning groove 241, two clamping holes 511 are formed in positions of the first clamping arm 51 corresponding to the fixed blind holes 242, a first spring 61 and a clamping block 62 matched with the fixed blind holes 242 are sequentially arranged in each fixed blind hole 242, one end of the first spring 61 is fixedly connected to the bottom wall of the fixed blind hole 242, and the other end of the first spring 61 is fixedly connected with the clamping block 62. When the fixture block 62 is pressed into the fixing blind hole 242, the first spring 61 is elastically compressed, so that the fixture block 62 is completely accommodated in the fixing blind hole 242, and when the fixing blind hole 242 is aligned with the clamping hole 511, the fixture block 62 is pressed against the clamping hole 511 by the elastic acting force of the first spring 61, so that the fixture block 62 is clamped in the fixing blind hole 242 and the clamping hole 511 at the same time, thereby improving the stability of the fixing of the stirring blade 24 and the supporting arm 23. If the stirring blade 24 is damaged, the worker can press the fixture block 62 through the fixture hole 511, so that the fixture block 62 is separated from the fixture of the fixture hole 511, and the convenience of mounting and dismounting the stirring blade 24 is improved.

As shown in fig. 8 and 9, in order to reduce the difficulty in abutting the latch 62 with the latch hole 511, the end surface of the latch 62 facing the first clip arm 51 is chamfered, so as to guide the sliding of the latch 62 and improve the efficiency in abutting the mixing blade 24 with the latch hole 511, because the support arm 23 is rotated, concrete enters the latch hole 511, and is likely to extrude the latch 62, so that the latch 62 slides out of the latch hole 511, a blocking plate 71 for blocking the two latch holes 511 is disposed on one side of the first clip arm 51 facing away from the second clip arm 52, a L-shaped slideway 72 is disposed on each side of the blocking plate 71, and the blocking plate 71 is embedded in the slideways 72, so that the blocking plate 71 slides in the slideways 72, thereby reducing the occurrence of the concrete entering the latch hole 511, and a control block 73 is further fixedly connected to one side of the blocking plate 71 facing away from the first clip arm 51, thereby increasing the contact area between the hand and the blocking plate 71, and improving the sliding efficiency of the blocking plate 71.

As shown in fig. 8 and 10, during the rotation of the supporting arm 23, the centrifugal force applied to the blocking plate 71 easily causes the blocking plate 71 to slide in the two slide ways 72, so that the concrete enters the blocking hole 511. In order to reduce the occurrence of this situation, a second magnet 74 is embedded in one side of the blocking piece 71 facing the first clamping arm 51, and a first magnet 75 corresponding to the second magnet 74 is embedded in one side of the first clamping arm 51 facing the blocking piece 71, so that the blocking piece 71 is blocked in the blocking hole 511 by the mutual magnetic attraction of the first magnet 75 and the second magnet 74, thereby improving the fixing stability of the blocking piece 71.

As shown in fig. 11, in order to improve the stability of the first half arm 21 and the second half arm 22 surrounding the stirring shaft 11, the stirring shaft 11 is provided with positioning blocks 81 corresponding to the blade assemblies 2 one by one, one side of the positioning block 81 is fixedly connected with a limiting post 82, the stirring shaft 11 is provided with an insertion hole 111 at a corresponding position where the limiting post 82 is inserted, and the inner arc surface of the second half arm 22 is provided with a receiving groove 221 for receiving the positioning block 81. When first half arm 21 and second half arm 22 are fixed on the global of (mixing) shaft 11, spacing to holding tank 221 through locating piece 81 has ensured blade subassembly 2 and has followed the pivoted stability of (mixing) shaft 11.

The working process is as follows: the worker first presses the fixture block 62 into the fixing blind hole 242, and then inserts the stirring blade 24 between the first clip arm 51 and the second clip arm 52, so that the fixture block 62 is clamped into the clamping hole 511 by the elastic force of the first spring 61, and the fixture block 62 is simultaneously located in the fixing blind hole 242 and the clamping hole 511. Then, the blocking piece 71 is inserted into the two slide ways 72, so that the blocking piece 71 is blocked at the blocking hole 511. Then, the screw 31 is threaded out of the first half-arm 21 from the inner side of the first half-arm 21, the reinforcing plate 33 is embedded in the limiting groove 213, the supporting arm 23 is fixed on the outer side wall of the first half-arm 21 by the threaded connection of the supporting arm 23 and the screw 31, the positioning rod 41 is inserted into the sliding hole 214 and the alignment hole 232 after the supporting arm 23 is screwed with the screw 31, the first half-arm 21 and the second half-arm 22 are fixed to each other, the positioning block 81 is positioned in the accommodating groove 221 of the second half-arm 22, the positioning rod 41 is abutted against the outer peripheral surface of the stirring shaft 11, and the other end of the positioning rod 41 is stably positioned in the sliding hole 214 and the alignment hole 232.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a concrete mixer, includes (mixing) shaft (11), and fixes at (mixing) shaft (11) first half arm (21) and second half arm (22) global, is provided with support arm (23) on first half arm (21), has seted up on first half arm (21) fixed orifices (211) to support arm (23) end fixing, characterized by: penetrate a screw rod (31) in fixed orifices (211) of first half arm (21), screw rod (31) have a stopper (32) that restriction screw rod (31) break away from fixed orifices (211) towards the tip rigid coupling of first half arm (21), one and screw rod (31) complex screw hole (231) are seted up to the one end of support arm (23), first half arm (21) are located the locating hole side-open and are equipped with slide opening (214) that pierce through with fixed orifices (211), set up counterpoint hole (232) that correspond with slide opening (214) on support arm (23) division threaded hole (231), slide opening (214) internal slipping is connected with one and blocks locating lever (41) in slide opening (214) and counterpoint hole (232) simultaneously, and locating lever (41) are towards the tip top of (11) and are touched on the outer peripheral face of (mixing shaft (11).

2. A concrete mixer according to claim 1, wherein: an elastic component which drives the positioning rod (41) to be separated from the alignment hole (232) of the supporting arm (23) is arranged on the peripheral surface of the positioning rod (41);

the elastic component comprises a limiting ring (42) fixedly connected to the outer peripheral surface of the end part of the positioning rod (41) facing the stirring shaft (11), and a compression spring (43) sleeved on the outer peripheral surface of the positioning rod (41), wherein the compression spring (43) is arranged between the limiting ring (42) and the inner wall of the first half arm (21).

3. A concrete mixer according to claim 1, wherein: and a reinforcing plate (33) is fixedly connected at the joint of the screw rod (31) and the limiting block (32).

4. A concrete mixer according to claim 3, wherein: the reinforcing plates (33) are provided in plurality.

5. A concrete mixer according to claim 3, wherein: the edge of the first half arm (21) fixing hole (211) is provided with a limiting groove (213) for accommodating the reinforcing plate (33).

6. A concrete mixer according to claim 1, wherein: the end part of the positioning rod (41) departing from the stirring shaft (11) is hemispherical.

7. A concrete mixer according to claim 1, wherein: the circumference of the stirring shaft (11) is fixedly connected with a positioning block (81), and the inner side of the second half arm (22) is provided with an accommodating groove (221) for accommodating the positioning block (81).