A construction mortar spraying device for construction engineering

Abstract

The present invention discloses a construction mortar spraying device for construction engineering, including a fixed component, a feeding component and a spraying component, wherein the bottom of the base plate is connected to universal wheels for limited rotation on all sides; the spraying component includes a driving mechanism for driving the overall operation of the device, a lifting mechanism for adjusting the height of the device, and a traveling mechanism for completing the reciprocating spraying of the device. The present invention provides the device with the functions of lifting and reciprocating movement by setting the spraying component, thereby effectively expanding the uniform spraying area of ​​the mortar, and the reciprocating distance can be freely adjusted to adapt to different wall widths; by setting the fixed component, the fixing effect of the device is achieved, thereby avoiding the displacement of the device position caused by the impact of mortar during the spraying operation and affecting the spraying quality; by setting the feeding component, the feed pipe is automatically pulled and recovered while the mortar feeding is completed, and the feeding component is synchronously driven via the spraying component without the need for additional power control.

Description

Technical Field

[0001] The invention relates to the technical field of mortar spraying, in particular to building mortar spraying equipment for construction engineering. Background Art

[0002] Building mortar spraying equipment is a mechanical device used in construction projects to quickly and evenly spray mortar onto the surface of a building. It is widely used in construction processes such as wall plastering and floor paving. It can significantly improve work efficiency and reduce the difficulty of manual operation.

[0003] After searching, the Chinese patent with publication number CN116181027B includes a mobile trolley, the top of which is fixedly connected to two fixed rods, the tops of the two fixed rods are hinged with folding rods, and also includes: two fixed racks, the two fixed racks are respectively fixedly connected to one side of the two fixed rods, one side of the two folding rods are fixedly connected with folding racks, and the two folding racks are respectively hinged on the two fixed racks; a lifting plate, the lifting plate is slidably connected to the two fixed rods, and the top of the lifting plate is rotatably connected to a rotating seat; a lifting spraying mechanism, the lifting spraying mechanism is located on the lifting plate; a fixing mechanism, the fixing mechanism is located on the fixed rod.

[0004] In the above patent, the worm drives the worm wheel and two rotating gears to make the lifting plate lift and lower, thereby driving the spray barrel to lift and lower. At the same time, the worm drives the turntable, and then drives the swing rod through the cylindrical block to complete the reciprocating swing of the rotating seat and the spray barrel, so that the spray barrel can automatically lift and lower the spray material, and at the same time, it swings back and forth during the lifting process to expand the spraying area and the reciprocating spraying makes the mortar spraying more uniform.

[0005] However, in the above patent, although the weight block is used to realize the automatic recovery of the feed pipe, the feed pipe is bent many times between the weight block and the rotating wheel and the bending angle exceeds ninety degrees, which can easily cause mortar to be blocked and residual in the feed pipe. At the same time, during the lifting and lowering of the spray barrel, the pulling of the weight block will cause the pressure in the feed pipe to change, while the pumping pressure of the high-pressure pump remains unchanged, which will cause the mortar spraying rate to change and affect the spraying effect of the device; on the other hand, the above patent does not describe the fixing effect of the mobile trolley. The impact generated when spraying mortar may cause the position of the trolley to shift, thereby changing the distance between the spray barrel and the wall, thereby affecting the spraying quality of the device. Summary of the invention

[0006] The purpose of the present invention is to provide a building mortar spraying device for construction engineering, which has the advantages of fixed spraying and free adaptation and solves the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a construction mortar spraying device for construction engineering, comprising a fixing assembly arranged on one side of the upper surface of a base plate, a feeding assembly arranged in the middle of the upper surface of the base plate, and a spraying assembly arranged on the other side of the upper surface of the base plate, wherein the four sides of the bottom end of the base plate are all connected with universal wheels for limited rotation;

[0008] The spraying assembly includes a driving mechanism for driving the overall operation of the equipment, a lifting mechanism for adjusting the height of the equipment, and a traveling mechanism for completing the reciprocating spraying of the equipment. The lifting mechanism is connected to the driving mechanism by transmission, and the traveling mechanism is connected to the lifting mechanism by transmission;

[0009] The feeding assembly comprises a positioning shaft which penetrates through and is rotationally connected to the middle of the upper surface of the bottom plate, and the positioning shaft is transmission-connected to the driving mechanism.

[0010] Preferably, the fixing assembly includes an armrest that passes through and is slidably connected to the upper surface of one end of the base plate, a toothed portion is provided on the outer contour of the upper middle section of the armrest, a pressure plate is fixedly connected to the bottom end of the armrest, a positioning seat is fixedly connected to the upper surface of the base plate near the armrest, the positioning seat is rotatably connected to a lever through a pin shaft, the top of the lever is meshed and engaged with the toothed portion, a pedal is fixedly connected to the middle section of the lever away from the armrest, a compression spring is fixedly connected between the bottom end of the pedal and the upper surface of the base plate, an extension plate is fixedly connected to the side of the outer contour of the upper middle section of the armrest away from the lever, and a return spring is fixedly connected between the bottom end of the extension plate and the upper surface of the base plate.

[0011] Preferably, the bottom end of the pressing plate is arranged to have a ratchet-shaped rough surface and the teeth of the ratchet are directed toward the spraying assembly located at the other end of the bottom plate.

[0012] Preferably, the driving mechanism comprises an adjusting wheel for adjusting the maximum reciprocating distance of the traveling mechanism, the axis of the adjusting wheel is penetrated by and rotatably connected with a driving shaft, the bottom end of the driving shaft is penetrated by and rotatably connected with a bottom plate, the middle section of the driving shaft is penetrated by and fixedly connected with a driving wheel, both sides of the driving wheel are meshed and transmission-connected with telescopic wheels, and the sides of the two telescopic wheels away from the driving wheel are meshed and transmission-connected with driven wheels;

[0013] The axes of the driving wheel, the telescopic wheel and the driven wheel are all penetrated and rotatably connected to the same connecting rod group through a pin shaft, and the adjusting wheel is penetrated and transmission-connected to the connecting rod group through a pin shaft.

[0014] Preferably, the lifting mechanism includes a fixed frame that penetrates and is limitedly rotatably connected to the outer contour of the bottom end of the driving shaft, the top of the fixed frame is fixedly connected to a guide rail, the top of the guide rail is fixedly connected to a support frame, the inner contour of the guide rail is slidably connected to a slider, the slider is vertically penetrated and slidably connected to a threaded column, the bottom end of the threaded column penetrates and is fixedly connected to the driven wheel, and a lifting ring is threaded on the outer contour of the threaded column at a position close to the upper surface of the slider.

[0015] Preferably, the travel mechanism comprises a guide shaft for limiting the rotation of the lifting ring, the outer contours of both ends of the guide shaft are penetrated and connected with positioning plates for limiting rotation, the middle section of the guide shaft is fixedly connected with a turbine, the outer contour of the turbine is meshed and transmission-connected with a worm, the bottom end of the worm is fixedly connected with the top of the driving shaft, the outer contour of one end of the guide shaft is fixedly connected with a transmission wheel 1, the side of the transmission wheel 1 away from the lifting ring is meshed and transmission-connected with a transmission wheel 2, a reciprocating threaded rod that penetrates and is rotationally connected to the positioning plate is fixedly connected at the axis of the transmission wheel 2, and a spraying part is screwed on the middle section of the reciprocating threaded rod;

[0016] The two positioning plates are fixedly connected to the lifting rings at corresponding positions, and one end of the positioning plate away from the lifting ring is fixedly connected to an extension rod, and the end of the spraying part away from the worm screw penetrates and is fixedly connected to a nozzle for spraying mortar.

[0017] Preferably, a transmission belt is transmission-connected to the outer contour of the top end of the positioning shaft and is sleeved on the outer contour of the driving shaft, the top end of the positioning shaft is fixedly connected to a spiral auger, the outer contour of the spiral auger is sleeved with a pushing barrel, one side of the bottom end of the pushing barrel is penetrated by and fixedly connected to a feed bin, the top end of the pushing barrel is penetrated by and fixedly connected to a delivery pipe, an air compressor is connected between the pushing barrel and the delivery pipe, two symmetrically arranged limit grooves are fixedly connected to the outer contour of the top end of the support frame close to the delivery pipe, the interior of the limit groove is slidingly connected to the same supporting rod, a supporting spring arranged inside the limit groove is fixedly connected between the support frame and the supporting rod, and the other end of the delivery pipe is penetrated by and fixedly connected to the top end of the spray part.

[0018] Preferably, the interiors of the feed bin, the push cylinder, the feed pipe and the spraying member are interconnected, and the outer contour of the feed pipe is pressed against the outer surface of the end of the supporting rod and the support frame away from the limiting groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a spraying assembly so that the device has the functions of lifting and reciprocating, thereby effectively expanding the uniform spraying area of ​​the mortar, and the reciprocating distance can be freely adjusted to adapt to different wall widths, further improving the adaptability of the device.

[0021] The present invention achieves a fixing effect on the device by arranging a fixing component, thereby avoiding the influence of the spraying quality on the equipment position displacement caused by the impact of mortar during the spraying operation.

[0022] The present invention provides a feeding component, which automatically pulls and recovers the feeding pipe while completing the mortar feeding, and the feeding component is synchronously driven by the spraying component without the need for additional power control, thereby further improving the automation level of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 It is a partial cross-sectional view of the main structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the spray assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the telescopic mechanism structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the lifting mechanism structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the traveling mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the feed assembly of the present invention;

[0031] Fig. 9 It is the overall workflow diagram of the present invention.

[0032] In the figure: 1, bottom plate; 11, universal wheel; 2, handrail; 21, toothed portion; 22, pressure plate; 23, positioning seat; 24, lever; 25, pedal; 26, compression spring; 27, extension plate; 28, return spring; 3, adjustment wheel; 31, driving shaft; 32, driving wheel; 33, telescopic wheel; 34, driven wheel; 35, connecting rod group; 4, fixing frame; 41, guide rail; 42, support frame; 43, slider; 44. Threaded column; 45. Lifting ring; 5. Guide shaft; 51. Positioning plate; 52. Turbine; 53. Worm; 54. Extension rod; 55. Transmission wheel one; 56. Transmission wheel two; 57. Reciprocating threaded rod; 58. Spraying part; 6. Positioning shaft; 61. Transmission belt; 62. Auger; 63. Push barrel; 64. Feed bin; 65. Feed pipe; 66. Limiting groove; 67. Support rod; 68. Support spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0034] See also Figures 1 to 9 The present invention provides a technical solution: a construction mortar spraying device for construction engineering, comprising a fixing component arranged on one side of the upper surface of a bottom plate 1, a feeding component arranged in the middle of the upper surface of the bottom plate 1, and a spraying component arranged on the other side of the upper surface of the bottom plate 1, and the four sides of the bottom end of the bottom plate 1 are all connected with universal wheels 11 for limited rotation;

[0035] The spraying assembly includes a driving mechanism for driving the overall operation of the equipment, a lifting mechanism for adjusting the height of the equipment, and a traveling mechanism for completing the reciprocating spraying of the equipment. The lifting mechanism is connected to the driving mechanism by transmission, and the traveling mechanism is connected to the lifting mechanism by transmission;

[0036] The feeding assembly comprises a positioning shaft 6 which penetrates through and is rotationally connected to the middle of the upper surface of the bottom plate 1 , and the positioning shaft 6 is transmission-connected to the driving mechanism.

[0037] In the present invention, the bottom plate 1 is used to carry the overall structure of the equipment, and the free movement of the equipment is achieved by setting the universal wheel 11. The equipment is pushed and pulled by the fixing mechanism, and locked when the equipment is running to avoid the position deviation of the equipment, which leads to the decrease of the spraying quality of the mortar.

[0038] Furthermore, the driving mechanism is used to drive the overall operation of the device, that is, the device has only one power source, thereby eliminating the operation link of multiple manual adjustments, further improving the automation of the equipment; the lifting mechanism completes the free lifting and spraying of the equipment, and at the same time limits the maximum travel distance of the traveling mechanism to make it compatible with the size of the wall to be sprayed; the traveling mechanism further completes the reciprocating travel spraying while lifting and spraying, so as to further expand the set uniform spraying area, and the travel speed and lifting speed are both proportional to the feed rate of the mortar, further improving the automation of the equipment;

[0039] At the same time, the driving mechanism drives the feeding assembly to work synchronously. When completing the mortar feeding, the feeding assembly automatically resists and pulls so that the feed pipe 65 is always in a taut state, thereby completing the automatic recovery operation of the feed pipe 65 to prevent the mortar from being blocked inside the feed pipe 65 due to the drooping and bending of the feed pipe 65. Example

[0040] See also Figure 3 This embodiment further illustrates the following on the basis of the first embodiment:

[0041] The fixing assembly includes an armrest 2 which penetrates through and is slidably connected to the upper surface of one end of the base plate 1, a toothed portion 21 is provided on the outer contour of the middle section of the armrest 2, a pressure plate 22 is fixedly connected to the bottom end of the armrest 2, a positioning seat 23 is fixedly connected to the upper surface of the base plate 1 near the armrest 2, the positioning seat 23 is rotatably connected to a lever 24 through a pin, the top end of the lever 24 is meshed and engaged with the toothed portion 21, a pedal 25 is fixedly connected to the middle section of the lever 24 away from the armrest 2, a compression spring 26 is fixedly connected between the bottom end of the pedal 25 and the upper surface of the base plate 1, an extension plate 27 is fixedly connected to the side of the outer contour of the middle section of the armrest 2 away from the lever 24, a return spring 28 is fixedly connected between the bottom end of the extension plate 27 and the upper surface of the base plate 1.

[0042] The bottom end of the pressing plate 22 is configured as a ratchet-shaped rough surface, and the teeth of the ratchet are directed toward the spraying assembly located at the other end of the bottom plate 1 .

[0043] When a person pushes the handrail 2, the handrail 2 drives the base plate 1 and the universal wheel 11 to complete the movement of the entire equipment. After the equipment moves to the predetermined location, the person steps on the pedal 25. At this time, the compression spring 26 contracts and the pedal 25 drives the lever 24 to deflect along the pin shaft of the positioning seat 23. Further, the meshing and clamping relationship between the lever 24 and the toothed portion 21 is released. At this time, the handrail 2 can be freely lifted and slid on the base plate 1; then the person presses down the handrail 2 until the pressure plate 22 contacts the ground. At this time, the extension plate 27 synchronously descends, causing the reset spring 28 to be compressed. After the pressure plate 22 contacts the ground, the person releases the pedal 25. The pedal 25 drives the lever 24 to reset along the pin shaft of the positioning seat 23 under the rebound action of the compression spring 26. At this time, the lever 24 is re-engaged with the toothed portion 21, and the height of the handrail 2 is fixed under the action of the toothed portion 21.

[0044] It should be noted that since the bottom end of the pressure plate 22 is provided with a ratchet-shaped rough surface, as the pressure plate 22 contacts the ground, the ratchet-shaped rough surface can effectively increase the friction between the pressure plate 22 and the ground, and during the mortar spraying process of the equipment, the direction of the impact force generated is opposite to the direction of the ratchet setting, and this part of the force is offset by the friction between the ratchet and the ground, thereby ensuring that the equipment will not be positionally offset during operation, thereby effectively improving the mortar spraying quality of the equipment. Example

[0045] See also Figure 4-Figure 7 This embodiment further illustrates the following on the basis of the second embodiment:

[0046] The driving mechanism includes an adjusting wheel 3 for adjusting the maximum reciprocating distance of the traveling mechanism, a driving shaft 31 is penetrated and rotatably connected at the axis center of the adjusting wheel 3, the bottom end of the driving shaft 31 is penetrated and rotatably connected with the bottom plate 1, a driving wheel 32 is penetrated and fixedly connected at the middle section of the driving shaft 31, both sides of the driving wheel 32 are meshed and transmission-connected with telescopic wheels 33, and the two sides of the two telescopic wheels 33 away from the driving wheel 32 are meshed and transmission-connected with driven wheels 34;

[0047] The axes of the driving wheel 32 , the telescopic wheel 33 and the driven wheel 34 are all penetrated and rotatably connected to the same connecting rod group 35 via a pin shaft, and the adjusting wheel 3 is penetrated and transmission-connected to the connecting rod group 35 via a pin shaft.

[0048] The lifting mechanism includes a fixing frame 4 that penetrates and is limitedly rotatably connected to the outer contour of the bottom end of the driving shaft 31, the top of the fixing frame 4 is fixedly connected to a guide rail 41, the top of the guide rail 41 is fixedly connected to a support frame 42, the inner contour of the guide rail 41 is slidably connected to a slider 43, the slider 43 is vertically penetrated and slidably connected to a threaded column 44, the bottom end of the threaded column 44 penetrates and is fixedly connected to the driven wheel 34, and a lifting ring 45 is screwed on the outer contour of the threaded column 44 at a position close to the upper surface of the slider 43.

[0049] The travel mechanism includes a guide shaft 5 for limiting the rotation of the lifting ring 45, and positioning plates 51 are penetrated and connected to the outer contours of both ends of the guide shaft 5, and a turbine 52 is fixedly connected to the middle section of the guide shaft 5, and a worm 53 is meshed and transmission-connected on the outer contour of the turbine 52, and the bottom end of the worm 53 is fixedly connected to the top of the driving shaft 31, and a transmission wheel 1 55 is fixedly connected to the outer contour of one end of the guide shaft 5, and the side of the transmission wheel 1 55 away from the lifting ring 45 is meshed and transmission-connected with a transmission wheel 2 56, and a reciprocating threaded rod 57 that penetrates and is rotationally connected to the positioning plate 51 is fixedly connected at the axis of the transmission wheel 2 56, and a spraying part 58 is screwed on the middle section of the reciprocating threaded rod 57;

[0050] The two positioning plates 51 are fixedly connected to the lifting ring 45 at the corresponding position and the end of the positioning plate 51 away from the lifting ring 45 is fixedly connected to the extension rod 54, and the end of the spraying member 58 away from the worm 53 passes through and is fixedly connected to a nozzle for spraying mortar.

[0051] Before the equipment is operated, the personnel adapt the spraying area of ​​the equipment to the wall by turning the adjusting wheel 3. When the personnel turns the adjusting wheel 3, the adjusting wheel 3 drives the connecting rod group 35 to deflect synchronously. At this time, the connecting rod group 35 changes from an inclined state to a horizontal state, and the positions of the telescopic wheel 33 and the driven wheel 34 change synchronously; the spacing between the two driven wheels 34 increases, and further, the spacing between the two threaded columns 44 increases synchronously, then the reciprocating distance of the spraying member 58 along the guide shaft 5 increases. In this process, the threaded column 44 and the slider 43 can only move axially along the guide rail 41 through the limit between the slider 43 and the guide rail 41, thereby avoiding the position of the threaded column 44 from being offset during the adjustment process, and the extension rod 54 is brought into contact with the wall by adjusting the spacing between the threaded columns 44, thereby achieving the adaptation of the reciprocating distance of the spraying member 58 to the wall, so as to meet the corresponding function of the equipment spraying area and the wall.

[0052] After the adjustment work is completed, the driving shaft 31 is turned on and the active wheel 32 is driven to rotate. At this time, the driven wheel 34 and the threaded column 44 rotate synchronously under the transmission action of the telescopic wheel 33, and the lifting ring 45 cannot rotate due to the limiting action of the positioning plate 51 and the guide shaft 5. That is, at this time, the lifting ring 45 starts to rise along the threaded column 44 under the action of the screw connection. Further, the positioning plate 51 and the guide shaft 5 rise synchronously, and the positioning plate 51 synchronously drives the spraying part 58 to rise, thereby realizing the lifting function during the mortar spraying process.

[0053] At the same time, the driving wheel 32 synchronously drives the worm 53 to rotate, and the worm 53 further drives the guide shaft 5 and the transmission wheel 1 55 through the turbine 52. Under the meshing transmission action of the transmission wheel 2 56, the reciprocating threaded rod 57 rotates. At this time, the spraying part 58 moves along the thread direction of the reciprocating threaded rod 57. When the spraying part 58 moves to the limit distance, it contacts and abuts against the positioning plate 51 and the extension rod 54, and the positions of the positioning plate 51 and the extension rod 54 are in a fixed position without external force adjustment. That is, at this time, the spraying part 58 is gradually squeezed by the positioning plate 51 and the squeezing force causes the spraying part 58 to start moving in the direction, thereby realizing the reciprocating movement of the spraying part 58 on the reciprocating threaded rod 57 to correspond to the reciprocating spraying operation of the equipment.

[0054] It should be noted that, in the process of the turbine 52 ascending and descending along with the guide shaft 5, the turbine 52 rotates synchronously under the screw connection of the worm 53. At this time, the contact point of the turbine 52 relative to the worm 53 will be displaced, thereby affecting the rotation speed of the turbine 52. When the turbine 52 ascends along with the guide shaft 5, since the displacement direction of the turbine 52 is consistent with the helical angle direction of the worm 53, the linear movement of the turbine 52 in the forward direction is equivalent to shortening the effective stroke of the worm 53 driving the turbine 52 to rotate, and the angular velocity of the turbine 52 is It will increase accordingly, and the faster the turbine 52 moves along the worm 53, the faster the turbine 52 rotates, and the rotation speed of the turbine 52 further controls the rotation speed of the guide shaft 5, the transmission wheel 1 55, the transmission wheel 2 56 and the reciprocating threaded rod 57, that is, the faster the rotation speed of the turbine 52, the faster the reciprocating speed of the spraying part 58 on the reciprocating threaded rod 57, thereby achieving rapid reciprocating motion of the spraying part 58 during the process of rising the spraying height of the equipment, thereby further improving the spraying rate and spraying quality of the equipment.

[0055] On the other hand, since the transmission ratio between the turbine 52 and the worm 53 is limited by the number of teeth of the turbine 52 and the worm 53, which in turn affects the operating speed ratio between the spray part 58 and the worm 53, resulting in the travel speed of the spray part 58 being limited, the size transmission ratio between the transmission wheel 1 55 and the transmission wheel 2 56 needs to be adaptively adjusted according to the actual scenario to ensure that the travel speed of the spray part 58 can meet the spraying requirements of the equipment. Example

[0056] See also Figure 8 This embodiment further illustrates the following on the basis of the third embodiment:

[0057] The outer contour of the top end of the positioning shaft 6 is transmission-connected with a transmission belt 61 sleeved on the outer contour of the driving shaft 31, the top end of the positioning shaft 6 is fixedly connected with a spiral auger 62, the outer contour of the spiral auger 62 is sleeved with a push barrel 63, one side of the bottom end of the push barrel 63 is penetrated by and fixedly connected with a feed bin 64, the top end of the push barrel 63 is penetrated by and fixedly connected with a delivery pipe 65, an air compressor is connected between the push barrel 63 and the delivery pipe 65, and the top of the support frame 42 near the delivery pipe 65 is fixedly connected with two symmetrically arranged limit grooves 66, the inside of the limit groove 66 is slidably connected with the same supporting rod 67, and a supporting spring 68 arranged inside the limit groove 66 is fixedly connected between the support frame 42 and the supporting rod 67, and the other end of the delivery pipe 65 is penetrated by and fixedly connected to the top of the spray part 58.

[0058] The feed bin 64 , the push cylinder 63 , the feed pipe 65 and the spraying member 58 are interconnected, and the outer contour of the feed pipe 65 abuts against the outer surface of the abutting rod 67 and the end of the support frame 42 away from the limiting groove 66 .

[0059] When the motor drives the drive shaft 31 to rotate, the transmission belt 61 synchronously drives the positioning shaft 6 to rotate, and the positioning shaft 6 further drives the spiral auger 62 to rotate inside the pushing barrel 63. At this time, the mortar material entering the pushing barrel 63 through the feed bin 64 is fully sheared and mixed under the rotation of the spiral auger 62, and is gradually pushed into the air pump at the top of the pushing barrel 63 along with the rotation direction of the spiral auger 62. Subsequently, under the pressurized action of the air pump, the mortar material enters the delivery pipe 65 in a high-pressure state and is finally sprayed toward the wall along the nozzle arranged on the spraying part 58, thereby completing the mortar spraying operation on the wall.

[0060] It should be noted that, as can be seen from Example 3, during the operation of the equipment, the spraying height rises and falls, and the synchronous change in the position of the spray part 58 will produce different pulling effects on the feed pipe 65. Therefore, the feed pipe 65 needs to be adaptively tensioned to keep the feed pipe 65 taut, thereby avoiding blockage of mortar in the feed pipe 65.

[0061] When the spraying part 58 pulls the feed pipe 65, the pressure of the feed pipe 65 on the supporting rod 67 changes synchronously according to the size of its traction force. The greater the traction force, the greater the pressure of the feed pipe 65 on the supporting rod 67. At this time, the supporting rod 67 tends to slide along the limiting groove 66 and compresses the supporting spring 68 synchronously. When the spraying part 58 moves to the lowest end, the pressure of the feed pipe 65 on the supporting rod 67 reaches the maximum. At this time, the supporting rod 67 slides along the limiting groove 66 to the extreme position and the supporting spring 68 is fully compressed.

[0062] During the rising of the spraying member 58 , the traction force on the feed pipe 65 gradually decreases. At this time, the abutting spring 68 gradually rebounds and pushes the abutting rod 67 to return to its original position, thereby abutting the feed pipe 65 to keep the feed pipe 65 always taut.

[0063] It should be noted that the feed pipe 65 is bent only twice and the maximum bending angle does not exceed ninety degrees, which can effectively reduce the probability of mortar being blocked in the feed pipe 65 and further ensure the working quality of the equipment.

[0064] Furthermore, the support of the supporting rod 67 on the feed pipe 65 causes the internal aperture of the feed pipe 65 to be compressed synchronously when the feed pipe 65 is bent at the supporting rod 67. As the spraying operation of the equipment proceeds, the supporting rod 67 slides outward synchronously when the spraying part 58 rises. During this process, the supporting spring 68 gradually resets and reduces the pressure on the supporting rod 67, that is, the force of the supporting rod 67 on the feed pipe 65 is synchronously reduced, and the internal aperture of the feed pipe 65 is gradually increased, so that the feed pipe 65 is bent at the position of the supporting rod 67. The aperture is smallest when the spraying member 58 moves to the lowest point, and is largest when the spraying member 58 moves to the highest point; and in the rising process of the spraying member 58, the portion of the feed pipe 65 located on the side of the abutting rod 67 is adjusted from an inclined state to a vertical state, that is, the length of the feed pipe 65 located on the side of the abutting rod 67 is shortened, and in the descending process of the spraying member 58, the length of the feed pipe 65 located on the side of the abutting rod 67 is increased, and this length change corresponds to the climbing length change of the mortar when passing through the feed pipe 65;

[0065] That is, during the lifting and lowering process of the spraying member 58, the climbing length of the mortar through the delivery pipe 65 changes synchronously, so that the retained kinetic energy of the mortar increases or decreases, and this process corresponds to the synchronous change of the bending aperture of the delivery pipe 65. According to the principles of fluid mechanics, at this time, the speed of the mortar when passing through the bend in the delivery pipe 65 changes; the rising of the spraying member 58 corresponds to the increase in the bending aperture of the delivery pipe 65, and the speed of the mortar when passing through the bend in the delivery pipe 65 decreases. At this time, the climbing length of the mortar in the delivery pipe 65 is reduced, which increases the retained kinetic energy of the mortar. This part of the redundant kinetic energy and the reduced rate offset each other to ensure that the pumping speed of the mortar is in a constant state, thereby realizing the steady-pressure pumping effect of the air pump, and then realizing the steady-speed spraying function of the mortar.

[0066] On the other hand, during the resetting process of the equipment after the spraying operation is completed, as the spraying part 58 descends, the supporting rod 67 is squeezed by the delivery pipe 65 and slides synchronously. This process squeezes the mortar remaining in the delivery pipe 65, further reducing the probability of blockage caused by the mortar remaining in the delivery pipe 65.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction mortar spraying device for construction engineering, comprising a fixing assembly arranged on one side of an upper surface of a base plate (1), a feeding assembly arranged in the middle of the upper surface of the base plate (1), and a spraying assembly arranged on the other side of the upper surface of the base plate (1), characterized in that: The bottom end of the base plate (1) is rotatably connected to universal wheels (11) on all sides thereof; The spraying assembly includes a driving mechanism for driving the overall operation of the equipment, a lifting mechanism for adjusting the height of the equipment, and a traveling mechanism for completing the reciprocating spraying of the equipment. The lifting mechanism is connected to the driving mechanism by transmission, and the traveling mechanism is connected to the lifting mechanism by transmission; The feeding assembly comprises a positioning shaft (6) which penetrates through and is rotationally connected to the middle of the upper surface of the bottom plate (1), and the positioning shaft (6) is transmission-connected to the driving mechanism; The driving mechanism comprises an adjusting wheel (3) for adjusting the maximum reciprocating distance of the traveling mechanism, a driving shaft (31) passing through the axis of the adjusting wheel (3) and being rotatably connected thereto, a bottom end of the driving shaft (31) passing through and being limitedly rotatably connected to the bottom plate (1), a driving wheel (32) passing through and being fixedly connected thereto in the middle section of the driving shaft (31), both sides of the driving wheel (32) being meshed with and transmission-connected to telescopic wheels (33), and both sides of the two telescopic wheels (33) being meshed with and transmission-connected to driven wheels (34) away from the driving wheel (32); The axes of the driving wheel (32), the telescopic wheel (33) and the driven wheel (34) are all penetrated and rotatably connected to the same connecting rod group (35) via a pin shaft, and the adjusting wheel (3) is penetrated and transmission-connected to the connecting rod group (35) via a pin shaft; The lifting mechanism comprises a fixing frame (4) which penetrates and is rotationally connected to the outer contour of the bottom end of the driving shaft (31); the top end of the fixing frame (4) is fixedly connected to a guide rail (41); the top end of the guide rail (41) is fixedly connected to a support frame (42); the inner contour of the guide rail (41) is slidably connected to a slider (43); the slider (43) is vertically penetrated and slidably connected to a threaded column (44); the bottom end of the threaded column (44) penetrates and is fixedly connected to the driven wheel (34); and a lifting ring (45) is threadedly connected to the outer contour of the threaded column (44) at a position close to the upper surface of the slider (43); The outer contour of the top end of the positioning shaft (6) is transmission-connected with a transmission belt (61) sleeved on the outer contour of the driving shaft (31); the top end of the positioning shaft (6) is fixedly connected with a spiral auger (62); the outer contour of the spiral auger (62) is sleeved with a push barrel (63); one side of the bottom end of the push barrel (63) is penetrated and fixedly connected with a feed bin (64); the top end of the push barrel (63) is penetrated and fixedly connected with a feed pipe (65); the push barrel (63) and the feed pipe are An air compressor is provided between the support frame (42) and the feed pipe (65); two symmetrically arranged limit grooves (66) are fixedly connected on the outer contour of the top of the support frame (42) close to the feed pipe (65); the inside of the limit groove (66) is slidably connected to the same supporting rod (67); a supporting spring (68) provided inside the limit groove (66) is fixedly connected between the support frame (42) and the supporting rod (67); the other end of the feed pipe (65) passes through and is fixedly connected to the top of the spraying member (58).

2. A construction mortar spraying device for construction engineering according to claim 1, characterized in that: The fixing assembly comprises an armrest (2) penetrating through and slidably connected to the upper surface of one end of the base plate (1); a toothed portion (21) is provided on the outer contour of the middle section of the armrest (2); a pressure plate (22) is fixedly connected to the bottom end of the armrest (2); a positioning seat (23) is fixedly connected to a position on the upper surface of the base plate (1) near the armrest (2); the positioning seat (23) is rotatably connected to a lever (24) via a pin; the top end of the lever (24) is meshed and clamped with the toothed portion (21); a pedal (25) is fixedly connected to the middle section of the lever (24) away from the armrest (2); a compression spring (26) is fixedly connected between the bottom end of the pedal (25) and the upper surface of the base plate (1); an extension plate (27) is fixedly connected to the side of the outer contour of the middle section of the armrest (2) away from the lever (24); a return spring (28) is fixedly connected between the bottom end of the extension plate (27) and the upper surface of the base plate (1).

3. A construction mortar spraying device for construction engineering according to claim 2, characterized in that: The bottom end of the pressing plate (22) is arranged to have a ratchet-shaped rough surface, and the teeth of the ratchet are directed towards the spraying assembly located at the other end of the bottom plate (1).

4. The construction mortar spraying equipment for construction engineering according to claim 1, characterized in that: The travel mechanism comprises a guide shaft (5) for limiting the rotation of the lifting ring (45), the outer contours of both ends of the guide shaft (5) are penetrated by positioning plates (51) and are limitedly rotatably connected, the middle section of the guide shaft (5) is fixedly connected to a turbine (52), the outer contour of the turbine (52) is meshed with and transmission-connected to a worm (53), the bottom end of the worm (53) is fixedly connected to the top of the drive shaft (31), the outer contour of one end of the guide shaft (5) is fixedly connected to a transmission wheel 1 (55), the side of the transmission wheel 1 (55) away from the lifting ring (45) is meshed with and transmission-connected to a transmission wheel 2 (56), the axis of the transmission wheel 2 (56) is fixedly connected to a reciprocating threaded rod (57) that penetrates and is rotationally connected to the positioning plate (51), and the middle section of the reciprocating threaded rod (57) is threadedly connected to a spraying member (58); The two positioning plates (51) are both fixedly connected to the lifting ring (45) at corresponding positions, and an end of the positioning plate (51) away from the lifting ring (45) is fixedly connected to an extension rod (54), and an end of the spraying member (58) away from the worm (53) penetrates and is fixedly connected to a spray head for spraying mortar.

5. A construction mortar spraying device for construction engineering according to claim 4, characterized in that: The interiors of the feed bin (64), the push cylinder (63), the feed pipe (65) and the spraying member (58) are interconnected, and the outer contour of the feed pipe (65) is abutted against the outer surface of the abutting rod (67) and the end of the support frame (42) away from the limiting groove (66).

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