Heavy wooden box structure for vertical multi-stage centrifugal pump
By using cross-fixed and frame reinforced rib structure of sliding and mattressed wood in the wooden box for vertical multi-stage centrifugal pump, the problem of structural instability of the wooden box when loading heavy-duty motors is solved, and the overall strength and stability are improved It enhances the stacking capacity of upper-level goods and reduces the use of raw materials.
Patent Information
- Application Number
- CN202421074264.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing wooden boxes for vertical multi-stage centrifugal pumps are prone to problems such as bending of the bottom plate, uneven side plate stress, weak upper bearing capacity, and inconvenient external reinforcement ribs when loading heavy-duty motors, resulting in unstable wooden box structure and Poor quality.
A frame that includes a base plate and a frame that supports the base plate. Sliding wood is arranged along the horizontal interval on the base plate for support. The bottom of the sliding wood is arranged along the longitudinal interval of the base plate to form a cross-fixation; horizontal reinforcement ribs and longitudinal direction are arranged on the tops of both sides of the frame. Reinforcement ribs, the top plate is installed on the cross beam and transverse reinforcement ribs, and the side plates are installed on the outside of the longitudinal reinforcement ribs. These structures improve the overall strength and stability of the wooden box.
Through the cross-fixing of sliding and matt wood and the reinforced rib structure of the frame, the overall strength of the wooden box is improved, the risk of deformation and damage is reduced, the capacity of upper-level goods is enhanced, the use of raw materials is reduced, and the wooden box is made The appearance is smoother and easy to print overall.
Smart Images
Figure CN222452865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of packaging technology, in particular to a heavy wooden box structure for a vertical multi-stage centrifugal pump. Background Art
[0002] Vertical multi-stage centrifugal pumps are usually packaged and stacked in wooden boxes. The existing wooden boxes generally use plywood to support the weight of the goods at the bottom, and the side panels use a simple vertical reinforcement support mode. When the installed motor power reaches 75kW or more, due to multiple factors such as misaligned assembly of panels or deformation under force, there is a certain probability that the wooden box will be twisted, damaged, and then fall apart, which seriously affects the quality. Specifically, the existing wooden boxes have the following defects:
[0003] 1. Some areas in the box are too heavy, and the bottom plate is bent: The bottom plate of the existing structure is plywood, and the horizontally placed plywood cannot support heavy objects with small support surfaces such as motors. When the pump is installed horizontally on the bottom plate, the contact surface between the motor and the plywood is located on the vertical heat sink, and the contact width between a single heat sink and the wooden box is only 2mm. Therefore, the pressure at the contact point is quite large, resulting in a relatively concentrated force at this point, causing the bottom plate to bend or even break.
[0004] 2. The side panels are unevenly stressed after stacking, and the frame structure is damaged: the adjacent side panels of the existing structure are fixed with a single iron sheet to form a quadrilateral structure. When the bottom plate is bent, a wavy gap is formed on the bottom of the side panels and the end panels. When the wooden boxes are stacked and weighed, the supporting environment at the bottom of the side panels and end panels is inconsistent, causing one side of the panel to bend and deform, and then the weight is accumulated on the fixed iron sheet, causing the iron nails on the iron sheet to deform or even dislocate, and the frame structure is damaged; the lateral bending of the side panels and end panels of the wooden boxes is aggravated, causing the upper limit of their vertical bearing capacity to drop sharply; the lateral bending of the panels continues to intensify, triggering a vicious cycle, and in severe cases, the wooden boxes fall apart.
[0005] 3. The upper layer of the box has weak bearing capacity after stacking: The cover plate structure is a single plate like the bottom plate. When a wooden box with a slightly smaller area is placed on it, the cover plate is subjected to force in a small range, causing the cover plate to bend or even break.
[0006] 4. The existing wooden box has reinforcing ribs on the outside, which is not convenient for overall printing.
[0007] Therefore, in view of the above situations, the wooden box structure needs to be redesigned. Utility Model Content
[0008] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a heavy-duty wooden box structure for a vertical multi-stage centrifugal pump, thereby improving the overall strength of the wooden box and reducing the breakage rate during placement and transportation; the box can accommodate goods that are heavier than the original products; the upper structure of the wooden box is improved to increase the upper weight limit of goods that can be stacked on the upper layer of the wooden box; by changing the structure, the overall wooden box can reduce the amount of raw materials used while maintaining the same load, thereby meeting the requirements of cost reduction and efficiency improvement; the wooden box removes the external supporting structure to make the overall appearance smooth and concise, which is convenient for printing.
[0009] The purpose of the utility model is achieved through the following technical solutions: this type of vertical multi-stage centrifugal pump uses a heavy-duty wooden box structure, including a bottom plate and a frame supported on the bottom plate, a plurality of slides are arranged at intervals along the horizontal direction of the bottom plate to support the bottom plate, and a plurality of cushions are arranged at intervals along the longitudinal direction of the bottom plate at the bottom of the slide, so that the slides and the cushions are fixed vertically to each other; the centrifugal pump lies horizontally on the side of the bottom plate away from the slide, and a motor sleeper and a pump base sleeper are arranged on the side bottom plate, which are respectively used to position the motor and pump base of the centrifugal pump; transverse reinforcing ribs are arranged along the horizontal direction at the top of both sides of the frame, a top plate is installed above the transverse reinforcing ribs, a plurality of longitudinal reinforcing ribs are arranged between the lower end of each transverse reinforcing rib and the bottom plate, side plates are installed on the outside of the longitudinal reinforcing ribs, and end plates are installed at the front and rear ends of the frame.
[0010] As a further technical solution, a plurality of cross beams are arranged at intervals on the top of the frame, and the cross beams are placed on transverse reinforcing ribs to bear the weight of an upper box placed on the frame.
[0011] As a further technical solution, the spacing between the beams is adjusted according to the size of the upper box body.
[0012] As a further technical solution, a groove is provided on the motor sleeper for contacting a heat sink attached to the surface of the motor.
[0013] As a further technical solution, the position where the longitudinal reinforcing ribs are supported on the bottom plate corresponds to the position where the pads are fixed on the slides.
[0014] As a further technical solution, the top of the side plate is fixed to the top plate by a steel edge.
[0015] The beneficial effects of the utility model are:
[0016] 1. The bottom plate is fixed and supported vertically by the sliding wood and the pads, which has high overall strength and is not easy to deform;
[0017] 2. Transverse and longitudinal reinforcement ribs are set on the frame for support and reinforcement, making the structure more stable and reliable;
[0018] 3. A crossbeam is set on the top of the frame, so that there are more supporting points for stacking the upper cargo (box), the reliability of multi-layer stacking is improved, and the space utilization rate when stacking cargo is higher;
[0019] 4. The side panels are connected to the steel edges and fixed on the frame, which makes the edges of the side panels less likely to deform and provides auxiliary support, making the overall load-bearing capacity of the wooden box greater;
[0020] 5. The side panels are installed on the outside of the longitudinal reinforcement ribs, and the top panel is installed above the crossbeam / transverse reinforcement ribs, so that the reinforcement ribs are all retracted into the wooden box structure and will not be exposed from the surface of the wooden box, which is more beautiful and convenient for overall printing. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the utility model.
[0022] Figure 2 The structure of the bottom plate of the utility model is shown in FIG. Figure 1 .
[0023] Figure 3 The structure of the bottom plate of the utility model is shown in FIG. Figure 2 .
[0024] Figure 4 This is a schematic diagram of the structure in which the centrifugal pump in the utility model is installed on a base plate.
[0025] Figure 5 It is a schematic diagram of the structure of the cooperation between the centrifugal pump and the motor sleeper in the utility model.
[0026] Figure 6 It is a structural schematic diagram of the frame in the utility model.
[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the utility model.
[0028] Figure 8 for Figure 7 A local enlarged force diagram of area A in the middle.
[0029] Fig. 9 It is a schematic diagram of the structure of the utility model after being stacked with the upper box body.
[0030] Explanation of the reference numerals in the accompanying drawings: base plate 1, frame 2, motor 3, pump base 4, slide 5, pad 6, motor sleeper 7, pump base sleeper 8, groove 9, side plate 10, end plate 11, top plate 12, cross beam 13, transverse reinforcement rib 14, longitudinal reinforcement rib 15, steel edge 16, upper box body 17. DETAILED DESCRIPTION
[0031] The utility model will be described in detail below with reference to the accompanying drawings:
[0032] Example: As attached Figures 1 to 9 As shown, the heavy wooden box structure of the vertical multi-stage centrifugal pump includes a bottom plate 1, a frame 2, a motor 3, a pump base 4, a slide 5, a cushion 6, a motor sleeper 7, a pump base sleeper 8, a groove 9, a side plate 10, an end plate 11, a top plate 12, a crossbeam 13, a transverse reinforcement rib 14, a longitudinal reinforcement rib 15, a steel edge 16, and an upper box body 17.
[0033] Reference Figure 2 Four slides 5 (four in this embodiment, or other numbers) are arranged at intervals along the horizontal direction on the bottom plate 1, the upper surface of the slides 5 supports the bottom plate 1, and four cushions 6 (four in this embodiment, or other numbers) are arranged at intervals along the longitudinal direction of the bottom plate 1 at the bottom (lower surface) of the slides 5, and the slides 5 and cushions 6 are perpendicular to each other and fixedly connected. The slides 5 and cushions 6 are fixed in a cross shape, so that the bottom plate 1 is not easy to shake back and forth or left and right during loading and transportation, thereby enhancing the overall strength of the bottom plate 1; at the same time, the two middle slides 5 are used to support the entire pump, avoiding the pressure deformation of the wooden box side panels 10 and end panels 11 due to the weight of the pump.
[0034] like Figure 3 , 4 As shown in Figure 5, the centrifugal pump lies horizontally on the upper surface of the bottom plate 1 (i.e., the side away from the slide 5), and two motor sleepers 7 and a pump base sleeper 8 are arranged on the side bottom plate 1. Preferably, a groove 9 is opened in the middle of the motor sleeper 7, and the groove 9 can contact the heat sink attached to the surface of the motor 3. The contact area between the heat sink of the motor 3 and the wooden board is changed by the motor sleeper 7, so that the weight of the motor 3 is borne entirely by the slide 5, thereby reducing the pressure deformation of the wooden box frame. The pump base 4 of the centrifugal pump is positioned and supported by the pump base sleeper 8.
[0035] Reference Figure 6 , 7 , transverse reinforcement ribs 14 are arranged along the transverse direction on the top of both sides of the frame 2, and a top plate 12 is installed above the transverse reinforcement ribs 14. Four longitudinal reinforcement ribs 15 are arranged between the lower end of each transverse reinforcement rib 14 and the bottom plate 1. Preferably, the number of longitudinal reinforcement ribs 15 on each side of the frame 2 matches the number of sleepers 6, so that the position where the longitudinal reinforcement ribs 15 are supported on the bottom plate 1 corresponds to the position where the sleepers 6 are fixed on the slide 5. The longitudinal reinforcement ribs 15 are supported at the corresponding positions of the sleepers 6, thereby increasing the overall frame strength. Side panels 10 are installed on the outside of the longitudinal reinforcement ribs 15, and end panels 11 are installed on the front and rear ends of the frame 2. Since the side panels 10 are installed on the outside of the longitudinal reinforcement ribs 15 and the top plate 12 is installed above the crossbeam 13 / transverse reinforcement ribs 14, the reinforcement ribs are all retracted into the wooden box structure, such as Figure 1 As shown, it will not be exposed from the surface of the wooden box, which is more beautiful and convenient for overall printing.
[0036] like Figure 6 , 9 As shown, four cross beams 13 are arranged at intervals on the top of the frame 2, and the cross beams 13 are all placed on the transverse reinforcing ribs 14. When the goods are stacked, the weight of the upper box 17 placed on the frame 2 is borne by the cross beams 13 (top plate 12). Preferably, the spacing of the cross beams 13 is adjusted according to the size of the upper box 17, so that smaller wooden boxes or goods can be placed on the wooden box cross beams.
[0037] Preferably, the top of the side panel 10 is connected to the top panel 12 by a steel edge 16 and then fixed to the frame 2, so that the edge of the side panel is not easily deformed and provides auxiliary support, so that the overall load-bearing capacity of the wooden box is greater.
[0038] The working process of this utility model:
[0039] like Figure 2 As shown, the slides 5 and the pads 6 are cross-fixed to prevent the bottom plate 1 from shaking back and forth or left and right during loading and transportation, thereby enhancing the overall strength of the bottom plate 1; at the same time, the two middle slides 5 are used to support the entire pump, avoiding pressure deformation of the side plates 10 and end plates 11 of the wooden box due to the weight of the pump.
[0040] like Figure 4 , 5 As shown, after the centrifugal pump is placed in the wooden box, the motor 3 at one end of the centrifugal pump is supported on the motor sleeper 7, and the pump base 4 at the other end of the centrifugal pump is supported on the pump base sleeper 8. The motor sleeper 7 changes the contact area between the heat sink of the motor 3 and the wooden board, so that the weight of the motor 3 is borne entirely by the slide 5, thereby reducing the pressure deformation of the wooden box frame. The pump base 4 of the centrifugal pump is positioned and supported by the pump base sleeper 8.
[0041] like Figure 8 As shown, when the side panel 10 is slightly bent within the range of the steel edge 16 and the longitudinal reinforcing rib 15, the gravity of the upper wooden box 17 presses on the side panel 10, making the upper plane F1>F2 of the bent side panel, thereby generating a lateral force F on the side panel 10 that forces the board to become straight, so that the side panel 10 is in a virtuous cycle and can withstand greater weight. Similarly, the middle side panel can only bend within a very small range because it is nailed together with the longitudinal reinforcing rib 15; when the wooden boxes are stacked, the vertical directions F1 and F2 become larger, and F also becomes larger, and the side panels are closer to vertical, so that the side panels can provide greater force. From the appearance, the heavier the upper weight, the stiffer the side panels.
[0042] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.
Claims
1. A heavy wooden box structure for a vertical multi-stage centrifugal pump, characterized in that: The centrifugal pump comprises a bottom plate (1) and a frame (2) supported on the bottom plate (1); a plurality of slides (5) are arranged at intervals along the horizontal direction on the bottom plate (1) for supporting the bottom plate (1); a plurality of cushions (6) are arranged at intervals along the longitudinal direction of the bottom plate (1) on the bottom of the slides (5), so that the slides (5) and the cushions (6) are fixed vertically to each other; the centrifugal pump lies horizontally on the bottom plate (1) on a side away from the slides (5), and a motor sleeper (7) and a pump base sleeper are arranged on the bottom plate (1) on this side. Wood (8), respectively used to position the motor (3) and pump base (4) of the centrifugal pump; transverse reinforcing ribs (14) are arranged on the top of both sides of the frame (2) along the transverse direction, a top plate (12) is installed above the transverse reinforcing ribs (14), a plurality of longitudinal reinforcing ribs (15) are arranged between the lower end of each transverse reinforcing rib (14) and the bottom plate (1), side plates (10) are installed on the outer side of the longitudinal reinforcing ribs (15), and end plates (11) are installed at the front and rear ends of the frame (2).
2. The heavy wooden box structure for a vertical multistage centrifugal pump according to claim 1 is characterized in that: A plurality of cross beams (13) are arranged at intervals on the top of the frame (2); the cross beams (13) are placed on transverse reinforcing ribs (14) and are used to bear the weight of an upper box (17) placed on the frame (2).
3. The heavy wooden box structure for a vertical multistage centrifugal pump according to claim 2 is characterized in that: The spacing between the cross beams (13) is adjusted according to the size of the upper box body (17).
4. The heavy wooden box structure for a vertical multistage centrifugal pump according to claim 1 is characterized in that: The motor sleeper (7) is provided with a groove (9) for contacting a heat sink attached to the surface of the motor (3).
5. The heavy wooden box structure for a vertical multistage centrifugal pump according to claim 1 is characterized in that: The position at which the longitudinal reinforcing rib (15) is supported on the bottom plate (1) corresponds to the position at which the cushion (6) is fixed on the sliding wood (5).
6. The heavy wooden box structure for a vertical multistage centrifugal pump according to claim 1 is characterized in that: The top of the side plate (10) is fixed to the top plate (12) via a steel edge (16).