Boring device for small end of vehicle-mounted pump

Abstract

The utility model discloses a boring device for a small end of a vehicle-mounted pump, and relates to the technical field of boring of the small end of the vehicle-mounted pump. The vehicle-mounted pump small end boring device comprises an advancing mechanism, a positioning mechanism and a main shaft mechanism. The advancing mechanism is composed of a connecting plate, a handle, a rack, a rack and a gear shaft, the lower portion of the advancing mechanism is connected with the main shaft mechanism, the handle is rotated, the gear shaft is meshed with the rack, and the main shaft mechanism is driven to move axially; the positioning mechanism is composed of a positioning bearing, a large-end positioning flange and a small-end positioning flange, the positioning bearing is embedded into an inner hole of the large-end positioning flange and an inner hole of the small-end positioning flange respectively, and the large-end positioning flange and the small-end positioning flange are fixed to the outer side of the large end and the outer side of the small end of the vehicle-mounted pump respectively through bolts and play a role in positioning the position of a boring hole; the main shaft mechanism is composed of a motor, a rotating shaft and a boring cutter, the motor rotates to drive the boring cutter on the rotating shaft to rotate, and the boring effect is achieved.

Description

Technical Field

[0001] The device relates to the technical field of concrete mechanical equipment maintenance, in particular to a boring technology for the small end of a vehicle-mounted pump. Background Art

[0002] With the rapid development of the construction industry, the amount of pumping tasks has increased dramatically, and the use of truck-mounted pumps has surged. During the concrete pumping operation, the S valve oscillates violently. After a long period of pumping, the small end wears and a gap is generated. If it is not repaired for a long time, the S valve will be deformed and damaged, causing serious losses.

[0003] The traditional maintenance method is to dismantle the hopper as a whole, entrust a professional organization to repair it, expand the worn inner hole, then insert the steel sleeve and weld the outer ring. This maintenance method cannot guarantee the strength due to the gap between the steel sleeve and the inner hole of the small end, and the service life is greatly reduced compared with the previous one. Therefore, the development of a vehicle-mounted pump small end boring device that is simple to maintain, saves time and effort, and greatly increases the service life is the innovative motivation of the utility model. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is: to develop a vehicle-mounted pump small end boring device, change the traditional maintenance method, increase the service life of the small end and reduce the maintenance cost.

[0006] In order to solve the above technical problems, the utility model provides a small-end boring device for a vehicle-mounted pump, characterized in that it includes: a traveling mechanism, a positioning mechanism and a spindle mechanism; the traveling mechanism is composed of a connecting plate, a handle, a rack, a frame and a gear shaft, and is connected to the spindle mechanism at the bottom. When the handle is turned, the gear shaft engages with the rack to drive the spindle mechanism to move axially; the positioning mechanism is composed of a positioning bearing, a large-end positioning flange and a small-end positioning flange, and the positioning bearings are respectively embedded in the inner holes of the large-end positioning flange and the small-end positioning flange, and the large-end positioning flange and the small-end positioning flange are respectively fixed to the outer side of the large end and the outer side of the small end of the vehicle-mounted pump, and are fixed with bolts to play a role in positioning the boring position; the spindle mechanism is composed of a motor, a rotating shaft and a boring tool, and the rotation of the motor drives the boring tool on the rotating shaft to rotate, thereby playing a role in boring.

[0007] Preferably, the travel mechanism consists of a connecting plate, a handle, a rack, a frame and a gear shaft. The connecting plate is cut and made from a 160mm×100mm×10mm steel plate and welded to the large-end positioning flange; the handle is processed and made from a φ16mm×200mm round steel; the rack is a T1 type, 400mm long spur rack; the frame is cast from a mold and is connected and fixed to the motor by bolts; the gear shaft is a φ40mm outer diameter spur gear shaft that matches the T1 type rack.

[0008] Preferably, the positioning mechanism consists of a positioning bearing A, a large-end positioning flange, a positioning bearing B, and a small-end positioning flange. The positioning bearing A and the positioning bearing B adopt double-row tapered roller bearings with an inner diameter of φ60mm, which are respectively embedded in the center circular holes of the large-end positioning flange and the small-end positioning flange. The large-end positioning flange is made by cutting a steel plate with a diameter of φ380mm and a thickness of 8mm. Six bolt holes with a diameter of φ18mm are evenly distributed on the edge along the circumferential direction. It is fixed to the outer side of the large end of the vehicle-mounted pump by bolts, and a bearing sleeve with an inner diameter of φ95mm and a length of 66mm is welded in the center. The positioning bearing A is embedded in the bearing sleeve of the large-end positioning flange, and both ends of the bearing are fixed by spring clips. The small-end locating flange is made by cutting a steel plate with a diameter of φ200mm and a thickness of 8mm. There are 6 bolt holes with a diameter of φ14mm evenly distributed along the circumferential direction on the edge. It is fixed to the outside of the small end of the vehicle-mounted pump by bolts. A bearing sleeve with an inner diameter of φ95mm and a length of 66mm is welded in the center. The locating bearing B is embedded in the bearing sleeve of the small-end locating flange, and both ends of the bearing are fixed by spring clips.

[0009] Preferably, the spindle mechanism is composed of a motor (1), a rotating shaft (4) and a boring tool (5); the motor (1) is a 2.3 kW two-phase DC motor; the rotating shaft (4) is made of alloy steel with a length of 1500 mm and a diameter of φ60 mm and a bearing inner ring; the boring tool (5) is 80 mm long and has a tool head angle of 45°.

[0010] (III) Beneficial effects

[0011] The traditional maintenance method of the small end of the vehicle-mounted pump is time-consuming and has defects, resulting in a short service life and poor use effect. Through a technical improvement of a boring device for the small end of the vehicle-mounted pump and a maintenance method of welding first and then boring, the wear resistance of the small end of the vehicle-mounted pump is greatly increased, the service life and maintenance efficiency are improved, and the maintenance cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a vehicle-mounted pump small end boring device according to an embodiment of the utility model;

[0013] Figure 2It is a three-dimensional structural diagram of a vehicle-mounted pump small end boring travel mechanism described in an embodiment of the utility model;

[0014] Figure 3 It is a three-dimensional diagram of the large end positioning flange described in the embodiment of the utility model;

[0015] Figure 4 It is a three-dimensional diagram of the small end positioning flange described in the embodiment of the utility model;

[0016] Figure 5 This is a front view of the rotating shaft described in the embodiment of the utility model; DETAILED DESCRIPTION

[0017] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] Figure 1 It is a stereoscopic diagram of a vehicle-mounted pump small-end boring device described in an embodiment of the utility model, including: a motor 1, a locating bearing A2, a large-end locating flange 3, a rotating shaft 4, a boring tool 5, a small-end locating flange 6, a locating bearing B7, a connecting plate 8, a handle 9, a rack 10, a frame 11 and a gear shaft 12.

[0019] Figure 2 It is a three-dimensional structural diagram of a vehicle-mounted pump small end boring travel mechanism described in an embodiment of the utility model, including: a connecting plate 8, a handle 9, a rack 10, a frame 11 and a gear shaft 12.

[0020] Figure 3 It is a three-dimensional diagram of the large end locating flange and the locating bearing A described in the embodiment of the utility model.

[0021] Figure 4 It is a three-dimensional diagram of the small end locating flange and the locating bearing B described in the embodiment of the utility model.

[0022] Figure 5 This is the front view of the rotating shaft mechanism described in the embodiment of the utility model. The rotating shaft is made of alloy steel with a length of 1500mm and a diameter of φ60mm and a bearing inner ring. The boring tool is embedded in the rotating shaft, with a length of 80mm and a tool head of 45°. See the attached figure for detailed dimensions.

[0023] The specific working principle is as follows:

[0024] Before using the vehicle-mounted pump small-end boring device, first repair the worn and deformed small-end hole by welding. After welding, first install and fix the small-end locating flange. The remaining parts of the device except the boring tool form a whole. After the rotating shaft passes through the locating bearing of the small-end locating flange, tighten the bolts of the large-end locating flange to complete the positioning. Then insert the boring tool into the rotating shaft to assemble and fix it. Then start the motor, which drives the rotating shaft to rotate. The boring tool bores the small end. The motor and the rotating shaft are driven by manually rotating the handle to move axially, and finally the small-end boring work is completed.

[0025] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A vehicle-mounted pump small end boring device, characterized in that: include: A travel mechanism, a positioning mechanism and a spindle mechanism; the travel mechanism is composed of a connecting plate (8), a handle (9), a rack (10), a frame (11) and a gear shaft (12), and is connected to the spindle mechanism at the bottom. When the handle (9) is turned, the gear shaft (12) meshes with the rack (10), thereby driving the spindle mechanism to perform axial movement; the positioning mechanism is composed of a positioning bearing A (2), a large end positioning flange (3), a positioning bearing B (7), and a small end positioning flange (6). The positioning bearing A (2) and the positioning bearing B (7) are respectively embedded in the central circular holes of the large end positioning flange (3) and the small end positioning flange (6). The large end positioning flange (3) and the small end positioning flange (6) are respectively fixed to the large end outer side and the small end outer side of the vehicle-mounted pump by bolts, thereby playing the role of positioning the boring hole position; the spindle mechanism is composed of a motor (1), a rotating shaft (4) and a boring tool (5). The motor (1) rotates to drive the boring tool (5) on the rotating shaft (4) to rotate, thereby playing the role of boring the hole.

2. A vehicle-mounted pump small end boring device as claimed in claim 1, characterized in that: The travel mechanism is composed of a connecting plate (8), a handle (9), a rack (10), a frame (11) and a gear shaft (12); the connecting plate (8) is cut and manufactured by a 160 mm × 100 mm × 10 mm steel plate and welded to the large end positioning flange (3); the handle (9) is processed and manufactured by a φ16 mm × 200 mm round steel; the rack (10) is a T1 type spur rack with a length of 400 mm; the frame (11) is cast by a mold and is connected and fixed to the motor (1) by bolts; the gear shaft (12) is a spur gear shaft with an outer diameter of φ40 mm that matches the T1 type rack (10).

3. A vehicle-mounted pump small end boring device as claimed in claim 1, characterized in that: The positioning mechanism comprises a positioning bearing A (2), a large end positioning flange (3), a positioning bearing B (7), and a small end positioning flange (6). The positioning bearing A (2) and the positioning bearing B (7) are 352012 type double row tapered roller bearings with an inner diameter of φ60 mm, which are respectively embedded in the bearing sleeves of the large end positioning flange (3) and the small end positioning flange (6), and the two ends of the bearings are fixed by spring clips; the large end positioning flange (3) is made by cutting a steel plate with a diameter of φ380 mm and a thickness of 8 mm, and the edge has 6 φ18 mm bolt holes evenly distributed along the circumferential direction, and is fixed to the A bearing sleeve with an inner diameter of φ95 mm and a length of 66 mm is welded at the center of the large end of the vehicle-mounted pump. The positioning bearing A is embedded in the bearing sleeve of the large end positioning flange. Both ends of the bearing are fixed by spring clips. The small end positioning flange (6) is made by cutting a steel plate with a diameter of φ200 mm and a thickness of 8 mm. Six bolt holes with a diameter of φ14 mm are evenly distributed along the circumferential direction of the edge. It is fixed to the small end of the vehicle-mounted pump by bolts. A bearing sleeve with an inner diameter of φ95 mm and a length of 66 mm is welded at the center. The positioning bearing B is embedded in the bearing sleeve of the small end positioning flange. Both ends of the bearing are fixed by spring clips.

4. A vehicle-mounted pump small end boring device as claimed in claim 1, characterized in that: The spindle mechanism is composed of a motor (1), a rotating shaft (4) and a boring tool (5). The motor (1) is a 2.3 kW two-phase DC motor. The rotating shaft (4) is made of alloy steel with a length of 1500 mm and a diameter of φ60 mm. The boring tool (5) is 80 mm long and has a tool head angle of 45°.

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