Portable grouting pump

Abstract

The utility model relates to a portable grouting pump which comprises a handheld frame, a planetary gear is installed on the handheld frame, a sun gear shaft of the planetary gear is connected with a power assembly, a planetary carrier shaft of the planetary gear is connected with an input shaft of a rack rod pump, a feeding port of the rack rod pump is connected with a feeding pipe, and a discharging port of the rack rod pump is connected with a discharging pipe. The high-pressure grouting device can be directly held by hand for use, and high-pressure grouting is realized through speed reduction and torque increase of the planetary gear and cooperation of a poking strip structure of the toothed bar; the device can be held by a single person for use, and is more suitable for special working conditions such as high-place operation.

Description

Technical Field

[0001] This utility model relates to a portable grouting pump, belonging to the technical field of grouting equipment. Background Technology

[0002] Grouting pumps are power equipment used for conveying fluids. They use compressed oil or compressed air as a power source and utilize the large working area ratio between the oil cylinder or air cylinder and the grouting cylinder to generate high injection pressure with relatively low pressure.

[0003] The grouting pump equipment currently sold on the market is very large and is generally wheeled; otherwise, its weight would require two or more people to move it.

[0004] A search of existing patent technologies reveals that most of the disclosed technical solutions incorporate wheels, and their size and weight are not significantly different from those sold on the market. For example, CN201922124411.2 discloses a portable pneumatic grouting pump. This pump uses pneumatic power and features a lifting plate that can be positioned below the pump's support. Through the coordination of a motor and a threaded rod, the lifting plate can be adjusted to different heights depending on the grouting pump being used, thus facilitating operation and reducing manual handling.

[0005] For example, CN201721697034.6 provides a portable grouting pump that is small in size, easy to maintain, and requires only one operator. Its structural principle is as follows: the quick-connect coupling 22 of the hydraulic cylinder is connected to the high-pressure oil pipe of the drilling rig support cylinder. The pump head suction port 5 is placed in the prepared cement grout, and the pump head injection port 6 is connected to the drilling grouting pipe. When the drilling rig is started, high-pressure oil is first introduced into the cylinder body 2 through the quick-connect coupling 22, pushing the cylinder piston 21 to the right. Simultaneously, the connecting device 3 drives the pump head piston 4 to the right, creating a negative pressure within the pump head cylinder. This causes the pump head steel ball 7 to be tightly adhered to the pump head suction port 5 and the pump head injection port 6. However, due to the steel ball support frame 8 at the pump head suction port 5, the pump head steel ball 7 cannot be completely adhered to the pump head suction port 5, leaving a gap between the pump head steel ball 7 and the pump head suction port 5. The cement grout then enters the pump head through this gap. The front section of the grouting pump housing 1 is equipped with a first support frame 11, and the rear section of the grouting pump housing 1 is equipped with a second support frame 12. According to its portable specifications, it relies on two support frames during operation, and can be carried by one person. The portability is only for easy handling, not for easy operation.

[0006] A search revealed that there are no portable grouting pumps available in the current technology and market that can be used by hand. Utility Model Content

[0007] In view of the above-mentioned problems existing in the prior art, the purpose of this utility model is to provide a portable grouting pump that can be easily operated by a single person and is suitable for grouting operations under special working conditions.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a portable grouting pump, including a handheld frame, on which a planetary gear is mounted. The sun gear shaft of the planetary gear is connected to a power component, and the planetary carrier shaft of the planetary gear is connected to the input shaft of a rack pump. The feed inlet of the rack pump is connected to a feed pipe, and the discharge outlet is connected to a discharge pipe. The rack pump is a double rack, wherein one end of the rack shaft of the driving rack is connected to the planetary carrier shaft, and the other end is equipped with a driving gear. The driven rack is equipped with a driven gear at the end corresponding to the driving gear, and the driven gear meshes with the driving gear. Both the driving rack and the driven rack consist of a rack shaft and pavers evenly distributed around the outer circumference of the rack shaft.

[0009] Furthermore, the planetary gear includes a sun gear and three planet gears that mesh with the sun gear around it. The sun gear is mounted on the sun gear shaft, the gear ring is fixed on the handheld bracket, the three planet gears mesh with the gear ring, and the three planet gear shafts are connected to the planet carrier. The planet carrier shaft is located at the center of the planet carrier.

[0010] Furthermore, the lever is provided with three levers, and one of the levers of the driving gear is located between the two levers of the driven gear.

[0011] Furthermore, the cross-section of the cantilever end of the lever is a circular arc protrusion.

[0012] Furthermore, the cross-section of the connecting surface between the two levers is an arc groove, which corresponds to the arc protrusion at the cantilever end of the lever.

[0013] Furthermore, the feed pipe is connected to the storage cylinder.

[0014] Furthermore, the power component is a motor and a power supply connected to the motor.

[0015] Furthermore, the motor is mounted on the frame of the handheld stand, and the power supply is a rechargeable battery. It is mounted on the hand arm of the handheld stand, and a power switch is set on the hand arm. The power supply and the motor are connected by wires.

[0016] Compared with the prior art, the advantages of this utility model are: it can be used directly by hand, and high-pressure grouting is achieved by reducing speed and increasing torque through planetary gears and by designing a rack and pinion structure; since it can be used by a single person, it is more suitable for special working conditions such as working at heights. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the toothed pump according to Embodiment 1 of this utility model;

[0019] Icon descriptions: 1. Handheld frame, 11. Handheld arm, 12. Power switch, 2. Motor, 3. Planetary gear, 31. Sun gear shaft, 32. Planetary carrier shaft, 4. Gear pump, 41. Input shaft, 42. Paddle bar, 5. Feed pipe, 6. Discharge pipe, 7. Storage cylinder, 8. Power supply. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Example

[0021] like Figure 1 The portable grouting pump shown includes a handheld frame 1, on which a planetary gear 3 is mounted. The sun gear shaft 31 of the planetary gear 3 is connected to a motor 2, which is mounted on the frame of the handheld frame 1. A rechargeable battery, 8, is mounted on the handheld arm 11 of the handheld frame. A power switch 12 is installed on the handheld arm 11, and the power supply 8 and the motor 2 are connected via wires. The planetary carrier shaft 32 of the planetary gear 3 is connected to the input shaft 41 of a rack pump 4. The rack pump inlet is connected to a feed pipe 5, which is connected to a storage cylinder 7, and the outlet is connected to a discharge pipe 6.

[0022] The planetary gear 3 consists of a sun gear and three planetary gears meshing around and with it. The sun gear is mounted on the sun gear shaft, the ring gear is fixed to the handheld bracket 1, and the three planetary gears mesh with the ring gear. The three planetary gear shafts are connected to the planet carrier, and the planet carrier shaft is located at the center of the planet carrier. The purpose of this structure is to reduce speed and increase torque.

[0023] like Figure 2 As shown, the rack pump 4 employs a double rack, where one end of the rack shaft of the driving rack is connected to the planetary carrier shaft, and the other end is fitted with a driving gear. The driven rack, corresponding to the driving gear, has a driven gear installed at its corresponding end, and the driven gear meshes with the driving gear. To accommodate the grouting and conveying effect of mortar and cement grout, the rack cannot adopt a helical structure. Instead, both the driving and driven racks consist of a rack shaft and pavers 42 evenly distributed around the outer circumference of the rack shaft.

[0024] Experiments revealed that the optimal grouting effect is achieved when three levers 42 are positioned, with one of the active levers located between the two driven levers. The more levers used, the worse the effect. The cross-section of the cantilever end of lever 42 is a circular arc protrusion; the cross-section of the connecting surface between two levers 42 is a circular arc groove, which corresponds to the circular arc protrusion at the cantilever end of the lever. This structure ensures effective rotation and prevents jamming.

[0025] Given the bulky structure of traditional piston grouting pumps, the need for multiple operators, the complexity of the process, and the significant time and manpower required for cleaning after each grouting operation, which also leads to waste of grouting materials, this embodiment redesigns the grouting pump by combining planetary gears and a rack pump. Grouting can be completed with only electricity. It has a good grouting effect on road surface cracks, structural cracks in buildings, and gaps in brick and stone walls, and its reinforcement and repair function is obvious. It can be operated by one person by hand, which is very convenient.

[0026] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable grouting pump, characterized in that: The device includes a handheld frame, on which a planetary gear is mounted. The sun gear shaft of the planetary gear is connected to a power assembly, and the planet carrier shaft of the planetary gear is connected to the input shaft of a rack pump. The rack pump's inlet is connected to a feed pipe, and its outlet is connected to a discharge pipe. The rack pump is a double rack pump, wherein one end of the rack shaft of the driving rack is connected to the planet carrier shaft, and the other end is equipped with a driving gear. The driven rack, corresponding to the driving gear, is equipped with a driven gear, which meshes with the driving gear. Both the driving rack and the driven rack consist of a rack shaft and pawls evenly distributed around the outer circumference of the rack shaft.

2. The portable grouting pump according to claim 1, characterized in that: The planetary gear includes a sun gear and three planet gears that mesh with the sun gear. The sun gear is mounted on the sun gear shaft, the gear ring is fixed on the handheld bracket, the three planet gears mesh with the gear ring, and the three planet gear shafts are connected to the planet carrier. The planet carrier shaft is located at the center of the planet carrier.

3. The portable grouting pump according to claim 1, characterized in that: The lever is provided with three levers, and one of the levers of the driving gear is located between the two levers of the driven gear.

4. The portable grouting pump according to claim 3, characterized in that: The cross-section of the cantilever end of the lever is a circular arc protrusion.

5. The portable grouting pump according to claim 4, characterized in that: The cross-section of the connecting surface between the two levers is an arc groove, which corresponds to the arc protrusion at the cantilever end of the lever.

6. The portable grouting pump according to claim 1, characterized in that: The feed pipe is connected to the storage cylinder.

7. The portable grouting pump according to claim 1, characterized in that: The power components are a motor and a power supply connected to the motor.

8. The portable grouting pump according to claim 7, characterized in that: The motor is mounted on the frame of the handheld stand, and is powered by a rechargeable battery. It is also mounted on the hand arm of the handheld stand, and a power switch is installed on the hand arm. The power supply and the motor are connected by wires.

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