CN216845256U - Ice cutter assembly for drum ice maker - Google Patents

Abstract

The utility model discloses a cut ice knife tackle spare for cask ice machine relates to the ice making field, include: the spindle with upper and lower ice cutter boards is provided with the ice cutter between the upper and lower ice cutter boards, the ice cutter comprises an ice cutter main body and a driven shaft assembly, the driven shaft assembly comprises a roller pin and thrust ball combined bearing, a pull nail and a female assembly, and the driven shaft assembly is inserted into the cavity from two ends of the ice cutter main body respectively.

Description

Ice cutter assembly for drum ice maker

Technical Field

The utility model belongs to the ice making equipment field more specifically relates to a cutting ice knife tackle spare of cask ice machine.

Background

With the development of society and the continuous improvement of people's production level, the trade of using ice is wider and wider, and the requirement on the quality of ice is higher and higher. The demand for "high performance", "low failure rate", "hygiene rate", etc. for ice makers is becoming more stringent. Among them is a drum ice maker. In a barrel ice maker, an ice barrel cools water drops on the inner wall through a refrigerant flowing through the outer wall to form an ice layer, an ice barrel main shaft rotates, an ice cutter on a driven shaft is driven to rotate around the driven shaft through an upper ice cutter plate and a lower ice cutter plate fixedly connected with the main shaft, and the ice cutter rubs and extrudes the ice layer on the inner wall of the ice barrel, so that the ice layer on the inner wall of the ice barrel is scraped.

The ice cutter is a key component of the ice maker, and whether the ice cutter can work normally or not directly determines the working efficiency and the service life of the ice maker. The existing driven shaft is unreasonable in installation, the existing driven shaft is installed to press the driven shaft into the ice skate along the pressurization of the end face of the mandrel, the essence of the method is that acting force is applied to the inner ring of the bearing, then the acting force acts on the ball and is transmitted to the outer ring, and therefore the outer ring is fixed to the inner cavity of the ice skate.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an ice cutter assembly for a drum ice maker, comprising:

the upper ice cutting blade plate and the lower ice cutting blade plate are arranged in parallel;

the main shaft is perpendicular to the upper ice cutting blade plate and the lower ice cutting blade plate and drives the upper ice cutting blade plate and the lower ice cutting blade plate to synchronously rotate;

the ice cutter is arranged in parallel with the main shaft, two ends of the ice cutter are fixed on the upper ice cutter plate and the lower ice cutter plate through screws, the ice cutter comprises an ice cutter main body and a driven shaft assembly, the ice cutter main body is provided with a cavity which axially penetrates through the ice cutter main body, and a convex shoulder is formed on the inner surface of the ice cutter main body;

the driven shaft assembly comprises a mandrel, a retaining shoulder is arranged at one end of the outer edge of the mandrel, a roller pin and thrust ball combined bearing is sleeved on the mandrel and comprises an inner ring, an outer ring and a base part, the inner ring is in interference fit with the mandrel, the base part is in clearance fit with the mandrel and is in contact with the retaining shoulder, a shaft shoulder is arranged at the other end of the outer edge of the mandrel, a pull nail is sleeved on the mandrel and is arranged at a distance from the outer ring, the shaft shoulder is used for limiting the distance between the pull nail and the outer ring, a nut assembly used for pressing the pull nail is further arranged on the mandrel, and a threaded hole is formed in the end face of one end, close to the retaining shoulder, of the mandrel;

the two driven shaft assemblies are respectively inserted into the cavity from two ends of the ice cutter main body, the base part is in contact with the convex shoulder, the outer ring is in transition fit with the cavity, the base part is in clearance fit with the cavity, and the threaded hole is connected with a screw.

Preferably, the upper ice cutting board is further provided with three adjusting screws, the adjusting screws penetrate through the upper ice cutting board and then abut against the end face of the mandrel, and the three adjusting screws are located on the top points of the regular triangles.

Preferably, the screw is located at the center of an inscribed circle of a regular triangle formed by the three adjusting screws.

Preferably, the screw is sleeved with a first elastic pad and a first flat pad, and the first flat pad is close to the upper surface of the upper ice cutting blade plate relative to the first elastic pad.

Preferably, one surface of the blind rivet, which faces the needle roller and thrust ball combined bearing, is provided with a concave groove which faces away from the needle roller and thrust ball combined bearing.

Preferably, the end face of the side wall formed by the groove and the blind rivet is arranged at an interval with the outer ring of the needle roller and thrust ball combined bearing.

Preferably, the nut assembly comprises a nut, the nut is in threaded connection with the mandrel, a second elastic pad and a second flat pad are arranged between the nut and the blind rivet, and the second elastic pad is close to the nut relative to the second flat pad.

Preferably, be provided with the reinforcement filling rod in the cavity, the reinforcement filling rod is located between two driven shaft assemblies, the reinforcement filling rod with cavity interference fit.

Preferably, the reinforcing filling rod is made of nylon.

Preferably, the mandrel is further provided with an annular groove, the annular groove is formed in the other side, away from the nut assembly, of the blocking shoulder, and a sealing ring is arranged in the annular groove to seal the cavity and the mandrel.

The utility model discloses a technical scheme has following advantage or one of beneficial effect at least among the above-mentioned technical scheme:

in this application, adopt kingpin and thrust ball combination bearing can receive great power at radial and axial direction, during the dabber atress, the effort is through keeping off the complete base portion that acts on of shoulder for all balls atress simultaneously, and the atress direction is the same, can be fine avoid can not producing the harm to kingpin and thrust ball combination bearing when impressing the cavity with the driven subassembly.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

FIG. 1 is an exploded view of a driven shaft assembly;

FIG. 2 is a cross-sectional view of an ice blade;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is the second structural schematic diagram of the ice cutter assembly of the drum ice maker

Fig. 5 is a top view of fig. 4.

The device comprises an upper ice cutter plate 1, a lower ice cutter plate 2, a main shaft 3, a 4-ice cutter, a 40-screw, a main ice cutter body 41, a driven shaft assembly 42, a shoulder 411, a mandrel 421, a retaining shoulder 4211, a needle roller and thrust ball combined bearing 422, an inner ring 4221, an outer ring 4222, a base portion 4223, a rivet 423, a nut assembly 424, a threaded hole 425, an adjusting screw 426, a first elastic pad 401, a first flat pad 402, a groove 4231, a nut 4241, a second elastic pad 4242, a second flat pad 4243, a reinforcing filling rod 43 and a sealing ring 44.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other elements or indirectly connected through one or more other elements or in an interactive relationship between two elements.

The following disclosure provides many different embodiments or examples for implementing different aspects of the invention.

Referring to fig. 1 to 5, an ice cutter assembly for a drum ice maker includes an upper ice cutter plate 1 and a lower ice cutter plate 2, wherein the upper ice cutter plate 1 and the lower ice cutter plate 2 are connected to a main shaft 3, the upper ice cutter plate 1 and the lower ice cutter plate 2 are fixed on the main shaft 3 at intervals, an ice cutter 4 is disposed between the upper ice cutter plate 1 and the lower ice cutter plate 2, the ice cutter 4 is disposed parallel to the main shaft 3, and two ends of the ice cutter 4 are fixed on the upper ice cutter plate 1 and the lower ice cutter plate 2 by screws 40. The ice cutter 4 includes an ice cutter body 41 and a driven shaft assembly 42, and the aforementioned ice cutter body 41 is provided with a cavity that penetrates the ice cutter body 41 in the axial direction of the ice cutter body 41 and forms a shoulder 411 on the inner wall of the ice cutter body 41.

The driven assembly comprises a mandrel 421, a retaining shoulder 4211 is arranged at one end of the outer edge of the mandrel 421, a needle and thrust ball combined bearing 422 is sleeved on the outer edge of the mandrel 421, wherein the needle and thrust ball combined bearing 422 comprises an inner ring 4221, an outer ring 4222 and a base portion 4223, balls are arranged between the outer ring 4222 and the base portion 4223, and needle rollers are arranged between the inner ring 4221 and the outer ring 4222. The screws 40 are arranged on the upper ice cutting blade plate 1 and the lower ice cutting blade plate 2, and the screws 40 penetrate through the upper ice cutting blade plate 1 and the lower ice cutting blade plate 2 and are in threaded connection with the core shaft 421 of the ice cutter 4. The screw 40 functions to adjust the axial preload between the outer race 4222 and the base portion 4223. Preferably, the end surface of the stem 421 near the shoulder 4211 is provided with a threaded hole 425, and the screw 40 is connected with the threaded hole 425.

In the prior art, the bearing is required to bear the axial fastening force of the screw 40 during operation, the inner ring and the outer ring of the bearing are prone to axial dislocation, and the bearing is prone to damage when operating in a dislocated state.

Therefore, the upper ice cutting plate 1 is further provided with three adjusting screws 426, the adjusting screws 426 pass through the upper ice cutting plate 1 and then abut against the end surface of the mandrel 421, the three adjusting screws 426 form a regular triangle, and the three adjusting screws 426 are positioned at the vertex of the regular triangle. The action force generated by the adjusting screw 426 is opposite to the action force generated by the screw 40, so that the inner ring 4221 and the outer ring 4222 of the needle roller and thrust ball bearing cannot axially shift, and the minimum axial load required by the combined bearing during working can be ensured.

Further, a first elastic pad 401 and a first flat pad 402 are sleeved on the screw 40, and the first flat pad 402 is close to the upper surface of the upper blade 4 relative to the first elastic pad 401.

The inner ring 4221 of the needle and thrust ball combination bearing 422 is transition fitted with the spindle 421 such that the inner ring 4221 is disposed on the spindle 421, the base portion 4223 is clearance fitted with the spindle 421 and the base portion 4223 is in contact with the shoulder 4211. The other end of the outer edge of the mandrel 421 is provided with a shoulder. The mandrel 421 is sleeved with a blind rivet 423, the blind rivet 423 abuts against a shaft shoulder, and the outer ring 4222 and the blind rivet 423 are arranged at intervals, the shaft shoulder is significant in limiting the interval distance between the blind rivet 423 and the outer ring 4222, the mandrel 421 is further provided with a nut assembly 424, and the nut assembly 424 is used for pressing the blind rivet 423 on the shaft shoulder, so that the blind rivet 423 is prevented from moving in the axial direction. Preferably, the pull stud 423 is spaced from the collar 4222 by a distance of 0.5 mm.

In the technical scheme, the shoulder 411 limits the depth of the driven shaft assembly 42 inserted into the cavity, when the driven shaft assembly 42 is inserted into the cavity, the shoulder 4211 disperses and uniformly acts on the base portion 4223, the base portion 4223 transmits acting force to the outer ring 4222 through balls, the inner ring 4221 and the outer ring 4222 of the needle and thrust ball combination bearing 422 can move relatively in the axial direction, and in the scheme, the inner ring 4221 is in transition fit with the mandrel 421, so the outer ring 4222 and the base can move relative to the inner ring 4221. Further, when the driven shaft assembly 42 is inserted into the cavity, the outer ring 4222 is in transition fit with the cavity, so that the outer ring 4222 is fixed in the cavity. Therefore, at this time, neither the inner ring 4221 nor the outer ring 4222 can move, and the rotation is performed. Since the base portion 4223 is a clearance fit with both the spindle 421 and the cavity, the base portion 4223 can be automatically centered with the outer race 4222 and the balls during assembly. After centering, it is subjected to the pre-load force required for proper bearing operation by the adjusting screw 426.

In this technical scheme, kingpin and thrust ball combination bearing 422 can take ice cutter 4 to rotate relative dabber 421, and kingpin and thrust ball combination bearing 422 has simple structure, compact characteristics, can adapt to narrow and small space in the cavity, has solved in the current cavity because of narrow and small can not install the great bearing of volume, and then the problem that the bearing that leads to the installation can't undertake great load.

Further, due to the structural particularity of the needle roller and thrust ball combined bearing 422, when the retaining shoulder 4211 is stressed, acting force is completely acted on the outer ring 4222, and the acting force is exerted on the front face of the ball to further act on the base portion 4223, and the acting force is just the thrust which the needle roller and thrust ball combined bearing 422 can bear originally. This is different from the conventional driven assembly in which the NSK5202 bearing or the series of bearings is used to apply pressure in the axial direction of the spindle 421, which essentially applies force to the inner ring of the bearing to transmit the axial force through the side of the ball, and finally fixes the outer ring of the bearing in the cavity. The existing method can cause displacement of the inner ring and the outer ring of the bearing and damage the balls, thus leaving hidden troubles for later use. In the present application, the combined needle and thrust ball bearing 422 is capable of receiving large forces in the radial and axial directions, the radial forces being received by the needles and the inner ring, the needles and the outer ring 4222, and the axial forces being received by the outer ring 4222, the balls and the seat portion 4223. When the mandrel 421 bears the axial force, the acting force acts on the base portion 4223 completely through the retaining shoulder 4211, all the balls are stressed simultaneously, the stress directions are the same, and damage to the roller pin and thrust ball combined bearing 422 when the driven assembly is pressed into the cavity during assembly can be well avoided.

Preferably, the needle roller and thrust ball combined bearing 422 adopts an NKX combined bearing, and the series of bearings can adapt to the rotation stress of the ice cutter 4, are convenient to assemble and have large load capacity.

The aforementioned stud 423 is provided with a groove 4231 on a surface of the stud 423 facing the needle and thrust ball combination bearing 422, and the groove 4231 is recessed from the needle and thrust ball combination bearing 422 in a direction away from the needle and thrust ball combination bearing 422.

In the technical scheme, the groove 4231 on the blind rivet 423 can be used for accommodating lubricating grease; meanwhile, the end face of the side wall formed by the groove 4231 and the rivet 423 is arranged at an interval with the base portion 4223, so that when the driven shaft assembly 42 is disassembled, the end face is in contact with the outer ring 4222, and the driven shaft assembly 42 is pulled out conveniently. Lubricating grease filled in the groove 4231 can lubricate the bearing, so that long-time operation of the ice skate is guaranteed, and the lubricating grease does not need to be added.

The nut assembly 424 is also optimized by the application, and the specific nut assembly 424 comprises a nut 4241, wherein the nut 4241 is screwed at one end of the mandrel 421 close to the shaft shoulder, a second elastic pad 4242 and a second flat pad 4243 are sleeved on the mandrel 421, the second elastic pad 4242 and the second flat pad 4243 are arranged between the pull nail 423 and the nut 4241, and in comparison, the second flat pad 4243 is arranged at one side close to the pull nail 423.

Further, a reinforcing filling rod 43 is arranged in the cavity, the reinforcing filling rod 43 is arranged between the two driven shaft assemblies 42, and the reinforcing filling rod 43 is in interference fit with the cavity. The reinforcing filler rod 43 is made of nylon material, and the use of the reinforcing filler rod 43 increases the rigidity of the ice cutter 4, reduces vibration during operation, and reduces the existence of air.

Since the spindle 421 does not directly contact the cavity when the driven shaft assembly 42 is assembled into the ice cutter body 41, an annular groove is further provided on the spindle 421, and the annular groove is provided on the other side of the shoulder 4211 from the nut assembly 424. A sealing ring 44 is arranged in the annular groove, and the sealing ring 44 is used for sealing the cavity and the mandrel 421, so as to prevent the lubricating grease injected in the cavity from leaking and prevent external water vapor from entering, thereby polluting the internal bearing environment and causing the failure of the needle roller and thrust ball combined bearing 422.

When the ice cutter 4 assembly is assembled, the roller pin and thrust ball combined bearing 422 is fixed on the mandrel 421, the roller pin and thrust ball combined bearing 422 abuts against the retaining shoulder 4211, then the pull stud 423 is installed, and the pull stud 423 adopts the nut assembly 424 to fix and limit the axial movement of the roller pin and thrust ball combined bearing 422.

Further, the reinforcing filling rod 43 is pressed into the cavity, and the reinforcing filling rod 43 is cylindrical, so that whether the reinforcing filling rod 43 is installed in place can be judged by measuring the distance from the end face of the reinforcing filling rod 43 to the end face of the ice cutter main body 41.

Then, the two driven shaft assemblies 42 are respectively and stably pressed into the cavity from the two ends of the ice cutter main body 41, and all the balls of the needle roller and thrust ball combined bearing 422 are simultaneously stressed, so that the needle roller and thrust ball combined bearing 422 is prevented from being damaged by installation. The existence of the shoulder 411 ensures the axial and radial positioning of the outer ring 4222 of the needle and thrust ball combination bearing 422, and the retaining shoulder 4211 ensures the axial positioning of the base portion 4223.

The ice cutter 4 is placed between the upper ice cutter plate 1 and the lower ice cutter plate 2, the upper ice cutter plate 1 and the ice cutter 4, the lower ice cutter plate 2 and the ice cutter 4 are fixed together through the screws 40, then the adjusting screws 426 are arranged on the upper ice cutter plate 1, the adjusting screws 426 are twisted to apply pressure to the end face of the mandrel 421, and the pre-tightening force of the roller pin and thrust ball combined bearing 422 is adjusted, and meanwhile, the pre-tightening force cannot be too large so as to avoid influencing the rotation of the ice cutter 4.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An ice cutter assembly for a drum ice maker, comprising:

an upper ice cutting blade plate (1) and a lower ice cutting blade plate (2) which are arranged in parallel;

the main shaft (3) is perpendicular to the upper ice cutting blade plate (1) and the lower ice cutting blade plate (2), and the main shaft (3) drives the upper ice cutting blade plate (1) and the lower ice cutting blade plate (2) to synchronously rotate;

the ice cutter (4) is arranged in parallel with the main shaft (3), two ends of the ice cutter (4) are fixed on the upper ice cutter plate (1) and the lower ice cutter plate (2) through screws (40), the ice cutter (4) comprises an ice cutter main body (41) and a driven shaft assembly (42), the ice cutter main body (41) is provided with a cavity axially penetrating through the ice cutter main body (41), and a convex shoulder (411) is formed on the inner surface of the ice cutter main body (41);

the driven shaft assembly (42) comprises a mandrel (421), one end of the outer edge of the mandrel (421) is provided with a retaining shoulder (4211), the mandrel (421) is sleeved with a needle roller and thrust ball combined bearing (422), the needle roller and thrust ball combined bearing (422) comprises an inner ring (4221), an outer ring (4222) and a base part (4223), the inner ring (4221) is in interference fit with the mandrel (421), the base part (4223) is in clearance fit with the mandrel (421) and the base part (4223) is in contact with the retaining shoulder (4211), the other end of the outer edge of the mandrel (421) is provided with a shaft shoulder, the mandrel (421) is sleeved with a pull nail (423), the pull nail (423) and the outer ring (4222) are arranged at intervals, the shaft shoulder is used for limiting the interval distance between the pull nail (423) and the outer ring (4222), and the mandrel (421) is further provided with a nut assembly (424) for pressing the pull nail (423), the end face of one end, close to the retaining shoulder (4211), of the mandrel (421) is provided with a threaded hole (425);

two ends of the self-cutting ice blade main body (41) of the two driven shaft assemblies (42) are respectively inserted into a cavity, the base portion (4223) is in contact with the shoulder (411), the outer ring (4222) is in transition fit with the cavity, the base portion (4223) is in clearance fit with the cavity, and the threaded hole (425) is connected with a screw (40).

2. The ice cutter assembly for a drum ice maker according to claim 1, wherein: the ice cutting machine is characterized in that an adjusting screw (426) is further arranged on the upper ice cutting knife plate (1), the adjusting screw (426) penetrates through the rear portion of the upper ice cutting knife plate (1) to abut against the end face of the mandrel (421), the number of the adjusting screws (426) is three, and the three adjusting screws (426) are located on the top points of the regular triangles.

3. The ice cutter assembly for a drum ice maker according to claim 2, wherein: the screw (40) is positioned at the center of an inscribed circle of a regular triangle formed by the three adjusting screws (426).

4. The ice cutter assembly for a drum ice maker according to claim 1, wherein: the screw (40) is sleeved with a first elastic pad (401) and a first flat pad (402), and the first flat pad (402) is close to the upper surface of the upper ice cutting board (1) relative to the first elastic pad (401).

5. The ice cutter assembly for a drum ice maker as in claim 1, wherein: one surface of the blind rivet (423) facing the needle roller and thrust ball combined bearing (422) is provided with a concave groove (4231) which is back to the direction of the needle roller and thrust ball combined bearing (422).

6. The ice cutter assembly for a drum ice maker according to claim 5, wherein: the end face of the side wall formed by the groove (4231) and the blind rivet (423) is arranged at a distance from the outer ring (4222) of the needle roller and thrust ball combined bearing (422).

7. The ice cutter assembly for a drum ice maker as in claim 1, wherein: the nut assembly (424) comprises a nut (4241), the nut (4241) is in threaded connection with the mandrel (421), a second elastic pad (4242) and a second flat pad (4243) are arranged between the nut (4241) and the pull nail (423), and the second elastic pad (4242) is close to the nut (4241) relative to the second flat pad (4243).

8. The ice cutter assembly for a drum ice maker as in claim 1, wherein: the cavity is internally provided with a reinforcing filling rod (43), the reinforcing filling rod (43) is positioned between the two driven shaft assemblies (42), and the reinforcing filling rod (43) is in interference fit with the cavity.

9. The ice cutter assembly for a drum ice maker as in claim 8, wherein: the reinforcing filling rod (43) is made of nylon.

10. The ice cutter assembly for a drum ice maker as in claim 1, wherein: the mandrel (421) is further provided with an annular groove, the annular groove is formed in the other side, away from the nut assembly (424), of the blocking shoulder (4211), and a sealing ring (44) is arranged in the annular groove to seal the cavity and the mandrel (421).

Images