Sand mould carrying trolley for piston ring stack box casting
By designing positioning blocks, skateboards and handle limit slots on the piston ring sand-type car, the precise positioning and transport of the sand-type is achieved, and the problems of unbalanced roller stress and high labor intensity of workers are solved, which extends the equipment life and improves production efficiency.
Patent Information
- Application Number
- CN202421542495.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In the prior art, piston ring sand-type transport trolleys are prone to imbalance in the roller stress during transportation, resulting in a shortening of the service life of the equipment, and workers have problems such as high labor intensity and inconvenient operation during assembly and transportation.
A sand-type transport truck for piston ring stacked box casting is designed, and positioning blocks, sliders and handle limit slots are set on the bottom plate. By cooperating with the unloading fixture, the precise positioning and transport of the sand-type is achieved, ensuring uniform force on the roller and reducing assembly difficulty.
Through precise positioning and uniform stress, the service life of the equipment is extended, the assembly and transportation difficulty of workers is reduced, and the production efficiency and convenience are improved.
Smart Images
Figure CN222859489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of piston ring production equipment, and more specifically to a sand mold carrying trolley for piston ring stacking casting. Background Art
[0002] Piston rings are important components of locomotive engines. They play the role of sealing, controlling lubricating oil, dissipating heat, and supporting and guiding in the engine. When piston rings are mass-produced, the mold is usually filled with green sand and molten iron is poured into the sand mold. After the casting is cooled and solidified, the sand mold is stacked on a transport cart and transported along the starting end of the molding line to the sand dropout at the other end of the molding line. Finally, the stacked sand molds are manually transported into the sand dropout equipment one by one to remove the sand attached to the surface of the casting.
[0003] The transport trolley in the prior art consists of only a placement plate, two pairs of electrically driven rollers and slides on both sides of the placement plate. Before the transport trolley is used for transportation, workers need to place the sand mold in the center of the placement plate to ensure that the rollers are evenly stressed. Since the weight of a single sand mold is nearly 12 kilograms, it is easy for the rollers to be unbalanced if they are stacked away from the center of the placement plate, which seriously affects the service life of the equipment. Subsequently, the handles at both ends of the sand mold need to be adjusted to a position that is convenient for the clamp to clamp. Since the position of the clamp hook on the unloading clamp designed by our company is fixed, and the unloading clamp can only be moved along the The guide rail performs reciprocating linear motion, so the fixture hook needs to hook the handle on the lowest sand mold to lift the stacked sand molds together. This has certain requirements for the placement of the handle on the lowest sand mold. The handle needs to extend to the outer end of the transport trolley and just correspond to the position of the hook on the unloading fixture to facilitate the unloading fixture to hook it. The current design is extremely unfriendly to new employees. It is easy for the sand mold to be unable to be lifted and transported due to incorrect placement of the handle. All sand molds need to be unloaded and rearranged later. Once the placement of the lowest sand mold deviates, the subsequent labor intensity of the personnel will be extremely high.
[0004] The traditional handling method is not only inefficient, but also extremely labor-intensive for workers. Therefore, it is urgent to develop a clamp for sand mold transfer to solve the above industry problems. Utility Model Content
[0005] 1. Technical issues to be solved
[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a sand mold transport trolley for piston ring stack box casting, which can help personnel to accurately locate the positioning handle of the sand mold placed on the transport trolley, making the equipment more durable, and at the same time effectively reducing the assembly difficulty of workers, and providing convenience for subsequent production links. The cooperation of the unloading clamp and the positioning handle to clamp the sand mold and transport the sand dropping operation will be more convenient.
[0007] 2. Technical solution
[0008] To solve the above problems, the utility model adopts the following technical solutions.
[0009] The cam is provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels.
[0010] Furthermore, the edge shapes of the groove bodies of the abutment portion and the handlebar limiting groove are both set to be arc-shaped, and multiple arcs are combined to form an annular limiting contour, the diameter of the annular limiting contour is larger than the diameter of the piston ring sand mold, the piston ring sand mold is placed at the geometric center position on the bottom plate, and the height of the placement position of the piston ring sand mold on the sliding portion is at the same horizontal height as the bottom height of the groove body of the handlebar limiting groove. When the lowest piston ring sand mold is placed, when the outer edges of the piston ring sand mold are respectively combined with the abutment portion and the handlebar limiting groove to form an annular limiting contour, the piston ring sand mold is put in place and the position is at the bottom. At the geometric center of the plate, in this state, the height of the positioning handle on the piston ring sand mold is slightly higher than the slide plate, so it does not affect the rotation adjustment of the piston ring sand mold. The handle limit groove is equivalent to the rotation prompt point of the positioning handle. Then the positioning handle is fine-tuned and rotated to the position corresponding to the handle limit groove. After multiple piston ring sand molds located at the geometric center of the bottom plate are stacked, the pressure on multiple rollers will be relatively evenly distributed, which helps to prevent the risk of damage or excessive wear of the rollers due to uneven force, and the torque or rotational force generated is balanced, which can improve the stability of the equipment when moving forward and backward.
[0011] Furthermore, one end of the sliding portion away from the abutting portion is configured as an arc surface whose height gradually decreases from back to front, and a smooth coating is coated on the arc surface to reduce the friction between the surface of the sliding portion and the piston ring sand mold, which saves workers effort when moving the piston ring sand mold to a suitable position on the sliding portion.
[0012] Furthermore, a pair of threaded holes is provided on the sliding portion, and a pair of threaded holes and threaded grooves corresponding to the positions are provided in the middle of the upper end of the base plate. Fastening bolts for fixing the positioning block and the base plate are installed in the threaded holes and the threaded grooves. It is difficult to cast the base plate and the positioning block as one piece, and fixing the two by fastening bolts facilitates assembly.
[0013] Furthermore, a draw hook is welded to one end of the positioning seat away from the sliding part, and a draw ring is welded to one end of the sliding part away from the positioning seat, so as to facilitate pulling the equipment away from the molding line when a failure occurs later.
[0014] 3. Beneficial effects
[0015] Compared with the prior art, the advantages of the present invention are:
[0016] (1) This solution can help personnel to accurately locate the positioning handle of the sand mold placed on the transport trolley, making the equipment more durable. At the same time, it can effectively reduce the difficulty of assembly for workers and provide convenience for subsequent production links. The unloading fixture and the positioning handle are used to cooperate with the sand mold to clamp and transport the sand.
[0017] (2) The groove edge shapes of the abutment portion and the handlebar limiting groove are both set to arc shapes, and multiple arc shapes are combined to form an annular limiting contour. The diameter of the annular limiting contour is larger than the diameter of the piston ring sand mold. The piston ring sand mold is placed at the geometric center position on the bottom plate. The height of the piston ring sand mold placement position on the sliding portion is at the same horizontal height as the bottom height of the handlebar limiting groove. When the bottom piston ring sand mold is placed, when the outer edges of the piston ring sand mold are respectively combined with the abutment portion and the handlebar limiting groove to form an annular limiting contour, the piston ring sand mold is placed in place and is located at the geometric center position on the bottom plate. At the center, in this state, the height of the positioning handle on the piston ring sand mold is slightly higher than the slide plate, so it does not affect the rotation adjustment of the piston ring sand mold. The handle limit groove is equivalent to the rotation prompt point of the positioning handle. Then the positioning handle is fine-tuned and rotated to the position corresponding to the handle limit groove. After multiple piston ring sand molds located at the geometric center of the bottom plate are stacked, the pressure on multiple rollers will be relatively evenly distributed, which helps to prevent the risk of damage or excessive wear of the rollers due to uneven force, and the torque or rotational force generated is balanced, which can improve the stability of the equipment when moving forward and backward.
[0018] (3) One end of the sliding part away from the abutting part is set as an arc surface with a height gradually decreasing from back to front. The arc surface is coated with a smooth coating to reduce the friction between the surface of the sliding part and the piston ring sand mold. It will be more labor-saving for workers to move the piston ring sand mold to a suitable position on the sliding part.
[0019] (4) A pair of threaded holes is provided on the sliding part, and a pair of threaded holes and threaded grooves corresponding to the positions are provided in the middle of the upper end of the bottom plate. Fastening bolts for fixing the positioning block and the bottom plate are installed in the threaded holes and the threaded grooves. It is difficult to cast the bottom plate and the positioning block as one piece, and they are fixed by fastening bolts for easy assembly.
[0020] (5) A hook is welded on one end of the positioning seat away from the sliding part, and a pull ring is welded on one end of the sliding part away from the positioning seat, so that the equipment can be pulled away from the molding line when a failure occurs later. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the structure of stacking sand molds on a trolley according to the utility model;
[0022] Figure 2 This is a schematic diagram of the structure of unloading the sand mold from the trolley in the utility model;
[0023] Figure 3 For this utility model Figure 1 Enlarged view of point A in .
[0024] Description of the numbers in the figure:
[0025] 1. Bottom plate; 2. Roller; 3. Positioning block; 301. Positioning seat; 302. Sliding part; 303. Abutment part; 304. Threaded hole; 4. Slide plate; 401. Limiting groove of hanging handle; 5. Piston ring sand mold; 501. Positioning hanging handle; 6. Fastening bolt; 7. Draw hook; 8. Draw ring. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] Embodiment 1:
[0030] See also Figure 1-3 A sand mold transport trolley for piston ring stacking box casting comprises a bottom plate 1, and rollers 2 driven by electricity are arranged at the four corners of the lower end of the bottom plate 1, and a positioning block 3 is fixedly connected to the middle part of the upper end of the bottom plate 1, and the positioning block 3 comprises an integrally formed positioning seat 301 and a sliding portion 302, and an abutment portion 303 is arranged at the transition between the positioning seat 301 and the sliding portion 302, and a pair of slide plates 4 are fixedly connected to the upper end of the bottom plate 1 and the positions on the left and right sides, and a pair of slide plates 4 are both provided with a hanging handle limiting groove 401, and a piston ring sand mold 5 is slidably connected to the positioning block 3, and the left and right ends of the piston ring sand mold 5 are fixedly connected with a positioning hanging handle 501, and the positioning hanging handle 501 is movably clamped in the hanging handle limiting groove 401, and the groove body height of the limiting groove 401 is one-fourth of the height of the piston ring sand mold 5, and the positioning hanging handle 501 is located in the middle part of the side wall of the piston ring sand mold 5, specifically located at a position of one-half of the height of the piston ring sand mold 5.
[0031] See also Figure 1 and Figure 3, the groove edge shapes of the abutment portion 303 and the handle limit groove 401 are all set to arc shape, and multiple arc shapes are combined to form an annular limiting contour, the diameter of the annular limiting contour is larger than the diameter of the piston ring sand mold 5, the piston ring sand mold 5 is placed at the geometric center position on the bottom plate 1, and the height of the placement position of the piston ring sand mold 5 on the sliding portion 302 is at the same horizontal height as the bottom height of the groove body of the handle limit groove 401. When the lowest piston ring sand mold 5 is placed, when the outer edges of the piston ring sand mold 5 are respectively in the annular limiting contour formed by the combination of the abutment portion 303 and the handle limit groove 401, the piston ring sand mold 5 is placed in place and the position is located at the geometric center position on the bottom plate 1. At the center, in this state, the height of the positioning handle 501 on the piston ring sand mold 5 is slightly higher than the slide plate 4, and therefore does not affect the rotation adjustment of the piston ring sand mold 5, and the handle limit groove 401 is equivalent to the rotation prompt point of the positioning handle 501, and then the positioning handle 501 is fine-tuned and rotated to the position corresponding to the handle limit groove 401. After multiple piston ring sand molds 5 located at the geometric center of the base plate 1 are stacked, the pressure on the multiple rollers 2 will be relatively evenly distributed, which helps to prevent the risk of damage or excessive wear of the roller 2 due to uneven force, and the torque or rotational force generated by it is balanced, which can improve the stability of the equipment when moving back and forth.
[0032] See also Figure 2 One end of the sliding portion 302 away from the abutting portion 303 is set as an arc surface with a height gradually decreasing from back to front, and a smooth coating is coated on the arc surface to reduce the friction between the surface of the sliding portion 302 and the piston ring sand mold 5, so that workers will save more effort when moving the piston ring sand mold 5 to a suitable position on the sliding portion 302.
[0033] See also Figure 2 A pair of threaded holes 304 are provided on the sliding portion 302, and a pair of threaded grooves corresponding to the positions of the threaded holes 304 are provided in the middle of the upper end of the base plate 1. Fastening bolts 6 for fixing the positioning block 3 and the base plate 1 are installed in the threaded holes 304 and the threaded grooves. It is difficult to cast the base plate 1 and the positioning block 3 as one piece, and the two are fixed by the fastening bolts 6 for easy assembly.
[0034] See also Figure 1-2 A hook 7 is welded on one end of the positioning seat 301 away from the sliding part 302, and a pull ring 8 is welded on one end of the sliding part 302 away from the positioning seat 301, so that the equipment can be pulled away from the molding line when a failure occurs later.
[0035] When the equipment is used to assemble the piston ring sand mold 5, the piston ring sand mold 5 is first placed on the sliding portion 302 and the slide plate 4, and then pushed to one end close to the abutment portion 303. When the piston ring sand mold 5 is pushed to the position where the abutment portion 303 and a pair of hanging handle limiting grooves 401 form an annular limiting contour, it falls naturally, or the piston ring sand mold 5 can be directly transported to this point. At this time, the piston ring sand mold 5 is located at the geometric center position on the bottom plate 1, and then the positioning hanging handle 501 is rotated and adjusted to a position corresponding to the hanging handle limiting groove 401, and then the remaining piston ring sand molds 5 are stacked on the piston ring sand mold 5 below in sequence to complete the assembly. Compared with the prior art, the utility model can help personnel to accurately locate the positioning hanging handle position of the sand mold placed on the transport trolley, making the equipment more durable and effectively reducing the assembly difficulty of workers. At the same time, it can provide convenience for subsequent production links, and it will be more convenient to clamp and transport the sand mold through the unloading fixture and the positioning hanging handle.
[0036] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.
Claims
1. A sand mold transport trolley for piston ring stack casting, comprising a bottom plate (1), wherein rollers (2) driven by electricity are arranged at the four corners of the lower end of the bottom plate (1), characterized in that: A positioning block (3) is fixedly connected to the middle of the upper end of the base plate (1), and the positioning block (3) comprises an integrally formed positioning seat (301) and a sliding portion (302). An abutment portion (303) is provided at the transition between the positioning seat (301) and the sliding portion (302). A pair of slide plates (4) are fixedly connected to the upper end of the base plate (1) and at positions on the left and right sides. The pair of slide plates (4) are both provided with a handle limit groove (401). A piston ring sand mold (5) is slidably connected to the positioning block (3), and the left and right ends of the piston ring sand mold (5) are both fixedly connected with positioning handles (501), and the positioning handles (501) are movably engaged in the handle limit groove (401).
2. A sand mold transport trolley for piston ring stack casting according to claim 1, characterized in that: The groove edge shapes of the abutment portion (303) and the handlebar limiting groove (401) are both arranged to be arc-shaped, and a plurality of arcs are combined to form an annular limiting contour, the diameter of the annular limiting contour is larger than the diameter of the piston ring sand mold (5), the piston ring sand mold (5) is placed at a geometric center position on the bottom plate (1), and the height of the placement position of the piston ring sand mold (5) on the sliding portion (302) is at the same level as the bottom height of the groove body of the handlebar limiting groove (401).
3. The sand mold transport trolley for piston ring stack casting according to claim 1, characterized in that: One end of the sliding portion (302) away from the abutting portion (303) is arranged as a curved surface whose height gradually decreases from the back to the front, and the curved surface is coated with a smooth coating.
4. The sand mold transport trolley for piston ring stack casting according to claim 1, characterized in that: A pair of threaded holes (304) are provided on the sliding portion (302), a pair of threaded grooves corresponding to the positions of the threaded holes (304) are provided in the middle of the upper end of the base plate (1), and fastening bolts (6) for fixing the positioning block (3) and the base plate (1) are installed in the threaded holes (304) and the threaded grooves.
5. The sand mold transport trolley for piston ring stack casting according to claim 1, characterized in that: A draw hook (7) is welded to one end of the positioning seat (301) away from the sliding portion (302), and a draw ring (8) is welded to one end of the sliding portion (302) away from the positioning seat (301).