CN213469502U - Be used for as cast lock case mechanism of heavy-duty car suspension support - Google Patents

Abstract

The utility model discloses a be used for as cast lock box mechanism of heavy automobile suspension support, the utility model discloses set up first boss and second boss on cope flask and drag flask respectively, set up the jack on first boss and second boss, set up the helicla flute in the jack, set up a plurality ofly on the lock box pole and spiral flute matching's spiral arch, pass the lock box pole that first boss and second boss are in proper order through the lock box pole and lock between cope flask and the drag flask, because it is adjacent interval is greater than between the spiral arch the hole of jack is dark, only not so in the jack spiral arch screws in the helicla flute, has both guaranteed cope flask and drag flask locking like this, separates cope flask and drag flask very easily at the twist grip separation simultaneously, simple structure, and use cost is low, convenient operation and comparatively safe.

Description

Be used for as cast lock case mechanism of heavy-duty car suspension support

Technical Field

The utility model relates to an automotive suspension production facility field, concretely relates to be used for as cast lock box mechanism of heavy-duty car suspension support.

Background

The domestic iron mold sand-coated sand box adopts three box locking mechanisms of a bolt and a nut, a C-shaped clamp and hydraulic pressure to lock the box, the bolt and the nut lock the box, 986N.M torque is needed for opening the bolt of the sand box by casting the sand box in a heating expansion mode, the labor intensity is very high, the service life of the bolt is generally basically scrapped after 30 times of bolts due to the pretightening force caused by the expansion, and the average time of opening the box once is 20 minutes; the C-shaped card is relatively troublesome to mount and easy to fall off, and has the defects of high processing cost, low safety factor, high labor intensity and the like; the pressure of the hydraulic pressure box is not easy to control, the failure rate is high, and an oil pipe is easy to burst, so that the potential safety hazard is large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve automotive suspension support swage cover sand casting sand box lock case use with high costs, factor of safety is low, intensity of labour big scheduling problem, developed a lock case mechanism for the casting of heavy automobile suspension support.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a box locking mechanism for heavy-duty car suspension bracket casting comprises a cope flask and a drag flask, wherein a plurality of first bosses are arranged on the edge of the cope flask, and second bosses which are the same as the first bosses are arranged on the corresponding positions of the drag flask and the cope flask; an insertion hole is formed between the first boss and the second boss, and a spiral groove is formed in the insertion hole; the box locking mechanism further comprises a box locking rod, a plurality of spiral protrusions matched with the spiral grooves are formed in the box locking rod, and the distance between every two adjacent spiral protrusions is larger than the hole depth of the insertion hole; the box locking rod is sequentially inserted through the insertion holes of the first boss and the second boss to lock the cope box and the drag box; and a rotating handle is arranged at the end part of the lock box rod.

Furthermore, the plane where the spiral protrusions and the lock box rod end surface are located has a chamfer angle α, where α satisfies tan α ═ h/(2 π r), where h is a distance between slopes of adjacent spiral protrusions, and r is a radius of the lock box rod.

Further, the chamfer angle α is 2.8 degrees.

Furthermore, the number of the first bosses is four, and the four first bosses are distributed at four corners of the cope flask.

Has the advantages that: the utility model discloses set up first boss and second boss on cope flask and drag flask respectively, set up the jack on first boss and second boss, set up the helicla flute in the jack, set up a plurality of spiral archs that match with the helicla flute on the lock case pole, lock between cope flask and the drag flask through the lock case pole that the lock case pole passed first boss and second boss in proper order, because adjacent the interval is greater than between the spiral arch the hole depth of jack, only less than a spiral arch screws in the jack in the helicla flute so, had both guaranteed cope flask and drag flask locking like this, separated cope flask and drag flask very easily at the twist grip separation simultaneously, simple structure, and use cost is low, convenient operation and comparatively safe.

Drawings

Fig. 1 is a schematic side view of a box locking mechanism according to the present invention;

fig. 2 is a schematic structural view of a box locking rod of the box locking mechanism of the present invention;

fig. 3 is a schematic view of a first boss structure of the box locking mechanism of the present invention;

fig. 4 is a schematic top view of the box locking mechanism of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a cope flask; 2. a drag flask; 3. a first boss; 4. a second boss; 5. a jack; 6. a helical groove; 7. a lock box lever; 8. a spiral protrusion; 9. the handle is rotated.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

According to the special characteristic research of the iron mold sand-coating casting of the automobile suspension bracket, the casting sand box locking mechanism is invented, the problems that the water leakage of the iron mold sand-coating casting sand box of the heavy automobile suspension bracket cannot be unpacked and the unpacking is difficult and is delayed are solved, the product quality is greatly improved, the production efficiency is improved by 600 percent, the cost is reduced by 500 percent, and the problems that the water leakage of the iron mold sand-coating casting sand box of the heavy automobile suspension bracket cannot be unpacked, the unpacking is difficult and the time delay part mechanical property is changed, the box locking efficiency and the unpacking efficiency are low and the like are thoroughly solved.

Referring to fig. 1 to 4, the utility model relates to a box locking mechanism for heavy-duty car suspension frame casting, which comprises a cope flask 1 and a drag flask 2 both having a rectangular structure, four corners of the cope flask 1 are provided with four first bosses 3, and positions of the drag flask 2 corresponding to the cope flask 1 are provided with second bosses 4 identical to the first bosses 3; the middle of the first boss 3 and the second boss 4 is provided with an insertion hole 5, and a spiral groove 6 is arranged in the insertion hole 5; the box locking mechanism further comprises a box locking rod 7, a plurality of spiral protrusions 8 matched with the spiral grooves 6 are formed in the box locking rod 7, and the distance between every two adjacent spiral protrusions 8 is larger than the hole depth of the jack 5; the box locking rod 7 is sequentially inserted into the insertion holes 5 of the first boss 3 and the second boss 4 to lock the cope flask 1 and the drag flask 2; in order to facilitate the rotation of the lock box rod 7, a rotating handle 9 is arranged at the end part of the lock box rod 7; when the device is used, the box locking rod 7 is driven to rotate by rotating the handle 9, so that the box locking rod 7 is pulled close to the distance between the first boss 3 and the second boss 4, and the purpose of locking the cope flask 1 and the drag flask 2 is achieved; the cope flask 1 and the drag flask 2 can be separated by reversely operating the rotating handle 9, and the flask opening time is 20 seconds, in the embodiment, the box locking rod 7 adopts 40Cr spiral groove quenching treatment, and the flask is continuously used for 1000 times without deformation and abrasion traces, so the service life is longer; meanwhile, as the distance between the adjacent spiral protrusions 8 is larger than the hole depth of the insertion hole 5, only less than one spiral protrusion 8 in the insertion hole 5 is screwed in the spiral groove 6, so that the locking of the cope flask 1 and the drag flask 2 is ensured, and the cope flask 1 and the drag flask 2 are easily separated by separating the rotating handle 9, the structure is simple, the use cost is low, and the operation is convenient and safe.

Referring to fig. 2, in this embodiment, in order to ensure that the box-locking lever 7 has a better locking effect, a plane where the spiral protrusion 8 and the end surface of the box-locking lever 7 are located has a chamfer α, α satisfies tan α ═ h/(2 pi r), where h is a distance between inclined planes of adjacent spiral protrusions 8, and r is a radius of the box-locking lever 7, so that a principle of self-locking of inclined planes below 4 degrees can be realized, and as long as the design of the box-locking lever 7 satisfies this condition, self-locking between the spiral protrusion 8 and the spiral groove 6 of the box-locking lever 7 can be easily realized.

Specifically, according to actual measurement, the chamfer angle alpha is 2.8 degrees, so that the best locking effect can be achieved, and the disassembly is quite convenient.

The mechanisms, assemblies and components of the present invention that are not described with respect to specific structures are conventional structures that exist in the prior art. Can be purchased directly from the market.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (4)

1. A box locking mechanism for casting a suspension bracket of a heavy-duty car comprises a cope flask (1) and a drag flask (2), and is characterized in that a plurality of first bosses (3) are arranged on the edge of the cope flask (1), and second bosses (4) which are the same as the first bosses (3) are arranged on the positions, corresponding to the cope flask (1), of the drag flask (2); an insertion hole (5) is formed between the first boss (3) and the second boss (4), and a spiral groove (6) is formed in the insertion hole (5); the box locking mechanism further comprises a box locking rod (7), a plurality of spiral protrusions (8) matched with the spiral grooves (6) are formed in the box locking rod (7), and the distance between every two adjacent spiral protrusions (8) is larger than the hole depth of the insertion hole (5); the box locking rod (7) is sequentially inserted through the insertion holes (5) of the first boss (3) and the second boss (4) to lock the cope flask (1) and the drag flask (2); and a rotating handle (9) is arranged at the end part of the box locking rod (7).

2. The box locking mechanism for the heavy-duty vehicle suspension bracket casting according to claim 1, wherein a plane of the spiral protrusion (8) and the end surface of the box locking rod (7) has a chamfer angle α, α satisfies a condition of tan α ═ h/(2 π r), where h is a distance between slopes of adjacent spiral protrusions (8) and r is a radius of the box locking rod (7).

3. The lock box mechanism for casting the suspension bracket of the heavy-duty car according to claim 2, wherein said chamfer angle α is 2.8 degrees.

4. The box locking mechanism for the casting of the suspension bracket of the heavy-duty car according to claim 3, wherein said first bosses (3) are provided in four numbers, and four first bosses (3) are distributed at four corners of said cope flask (1).

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