Manhole cover made of composite material

Abstract

The utility model discloses a composite material manhole cover in the technical field of composite material products, which comprises a manhole cover frame and a manhole cover, the cross section of the manhole cover frame is C-shaped, the cross section of the manhole cover is L-shaped, a pair of mounting seats is mounted on the manhole cover frame, a pair of lock catch plates is mounted on the manhole cover, the mounting seats are connected with the lock catch plates through lock catch pieces, and the lock catch pieces are connected with the manhole cover frame. The manhole cover solves the problems of a metal manhole cover, and is simple in structure, convenient to operate and good in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of composite products, in particular to a manhole cover. Background Art

[0002] Carbon fiber reinforced resin-based composite materials have the characteristics of high specific strength, high specific modulus, and strong designability, and are one of the hot spots in material research. Carbon fiber composite structural parts are gradually replacing metal structural parts, and have been widely used in the automotive industry, aerospace, shipbuilding, sports equipment, and weapons and equipment in recent years. Manhole covers are commonly found in fishing boats and fiberglass yachts, and play a protective and sealing role. Since metal manhole covers are usually heavy, greater force may be required when opening and closing. Long-term use may cause inconvenience in operation or damage the cover. Metal manhole covers may be affected by chemical corrosion and electrical corrosion. If the cover material reacts chemically with the substance it contacts, or an electrochemical reaction occurs in the electrolyte, the cover may be corroded and damaged. Therefore, there is a huge demand for a composite manhole cover that is light in weight, easy to operate, and has good weather resistance. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a composite material manhole cover, which solves the problems existing in metal manhole covers and has a simple structure and is easy to operate.

[0004] The purpose of the utility model is achieved as follows: a composite material manhole cover, comprising a manhole cover frame and a manhole cover, the cross-section of the manhole cover frame is C-shaped, the cross-section of the manhole cover is L-shaped, a pair of mounting seats are installed on the manhole cover frame, a pair of locking plates are installed on the manhole cover, and the mounting seats and the locking plates are connected via locking members.

[0005] As a further limitation of the present invention, the hole cover frame and the hole cover are made of composite materials.

[0006] As a further limitation of the present invention, the mounting seat includes a pair of mounting plates mounted on the inner and outer sides of the hole cover frame, and a pair of ear plates are provided on the outer mounting plate.

[0007] As a further limitation of the present invention, a notch is processed on the outer end of the locking plate.

[0008] As a further limitation of the present invention, one end of the locking member is hinged to the ear plate, and the other end can be inserted into the slot.

[0009] As a further limitation of the present invention, the locking member includes a mounting bolt that passes through the ear plate, a sleeve is sleeved on the bolt of the ear plate, a threaded rod is connected to one side of the sleeve, and a butterfly nut is threadedly connected to the threaded rod.

[0010] As a further limitation of the present invention, a support plate cooperating with the locking plate is provided at the bottom of the hole cover.

[0011] As a further limitation of the present invention, a reinforcing member is provided at the bottom of the hole cover.

[0012] As a further limitation of the present invention, the reinforcement member includes a cross-shaped frame, and a foam core is arranged in the cross-shaped frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the manhole cover of the present invention has a simple structure, and gives full play to the advantages of composite materials such as high specific strength, large specific modulus, fatigue resistance and corrosion resistance. Compared with metal manhole covers, it has a light weight, is easy to operate and has better weather resistance. The utility model can be used on the decks of fishing boats and yachts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0017] Figure 3 It is a top view of the utility model.

[0018] Figure 4 For along Figure 3 AA section view.

[0019] Figure 5 It is a schematic diagram of the connection between the mounting seat and the locking plate in the utility model.

[0020] Among them, 100 hole cover frame, 200 hole cover, 300 mounting seat, 301 mounting plate, 302 ear plate, 400 locking plate, 401 notch, 500 locking piece, 501 mounting bolt, 502 sleeve, 503 threaded rod, 504 butterfly nut, 600 support plate, 700 reinforcement, 701 cross frame, 702 foam core. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-5 A composite material manhole cover shown includes a manhole cover frame 100 and a manhole cover 200. The cross-section of the manhole cover frame 100 is C-shaped, and the cross-section of the manhole cover 200 is L-shaped. A pair of mounting seats 300 are installed on the manhole cover frame 100, and a pair of locking plates 400 are installed on the manhole cover 200. The mounting seats 300 and the locking plates 400 are connected via locking members 500.

[0023] Specifically, the hole cover frame 100 and the hole cover 200 are square structures as a whole, and are installed on the outside of the vertical surface of the hole cover frame 100 and extend outward, and cooperate with the locking plate 400 and the locking member 500 to complete the closed installation of the hole cover 200.

[0024] It should be noted that the C-shaped cross-section of the manhole cover frame 100 and the L-shaped manhole cover 200 ensure a larger contact area and space occupation between the two. Such a design can improve the sealing performance of the manhole cover 200.

[0025] Furthermore, the hole cover frame 100 and the hole cover 200 are made of composite materials.

[0026] Specifically, it is made of carbon fiber composite material and autoclave process.

[0027] It should be noted that by utilizing the advantages of carbon fiber composite materials such as high specific strength, large specific modulus, fatigue resistance and corrosion resistance, the composite products formed by autoclaves have good quality consistency, stable and reliable quality, and thus obtain products with superior performance; compared with metal manhole covers, they are lighter in weight and have better weather resistance.

[0028] Furthermore, the mounting seat 300 includes a pair of mounting plates 301 mounted on the inner side and the outer side of the hole cover frame 100 , and a pair of ear plates 302 are provided on the outer mounting plate 301 .

[0029] Specifically, the mounting plate 301 is made of metal material.

[0030] It should be noted that since the hole cover frame 100 is made of composite material, its own connection strength is relatively weak. Therefore, when installing the fastener 500, directly fixing the fastener 500 on the hole cover frame 100 will result in insufficient stability. Therefore, the installation of the fastener 500 is completed by designing a mounting seat 300. The mounting seat 300 is a pair of mounting plates 301, which are clamped on both sides of the hole cover frame 100. The fastener 500 is installed on the mounting plate 301 through the ear plate 302 to ensure the reliability of the fastener 500 during installation.

[0031] Furthermore, a notch 401 is processed at the outer end of the locking plate 400 .

[0032] Specifically, the locking plate 400 extends outward from the top of the hole cover 200 for a certain distance, and the notch 401 is formed on the extended locking plate 400 .

[0033] It should be noted that such a design, in combination with the ear plate 302 and the locking member 500, makes the operation more convenient.

[0034] Furthermore, one end of the locking member 500 is hinged to the ear plate 302 , and the other end can be inserted into the slot 401 .

[0035] It should be noted that such a design allows the locking member 500 to still be hung on the mounting seat 300 when unlocking, and to be inserted into the notch 401 when locking, making the operation more convenient.

[0036] Furthermore, the locking member 500 includes a mounting bolt 501 penetrating the ear plate 302 , a sleeve 502 is sleeved on the bolt of the ear plate 302 , a threaded rod 503 is connected to one side of the sleeve 502 , and a butterfly nut 504 is threadedly connected to the threaded rod 503 .

[0037] When the hole cover 200 needs to be opened, unscrew the butterfly nut 504, pull the butterfly nut 504 outward, so that the threaded rod 503 rotates around the mounting bolt 501 and disengages from the slot 401, and the hole cover 200 can be removed at this time; when it needs to be closed, the operation is reversed, the threaded rod 503 is inserted into the slot 401, and the butterfly nut 504 is tightened to completely close the hole cover 200.

[0038] Furthermore, a support plate 600 cooperating with the locking plate 400 is provided at the bottom of the hole cover 200 .

[0039] It should be noted that, as mentioned above, since the hole cover 200 is made of composite material, its own connection strength is relatively weak. By designing the support plate 600 and the locking plate 400, which are clamped on the upper and lower sides of the hole cover 200, the reliability of the locking member 500 during installation is ensured.

[0040] Furthermore, a reinforcing member 700 is provided at the bottom of the hole cover 200 .

[0041] It should be noted that such a design can enhance the rigidity of the hole cover 200 .

[0042] Furthermore, the reinforcement member 700 includes a cross-shaped frame 701 , and a foam core 702 is disposed in the cross-shaped frame 701 .

[0043] In order to further reduce weight while ensuring strength.

[0044] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A composite material manhole cover, comprising a manhole cover frame (100) and a manhole cover (200), characterized in that: The cross section of the hole cover frame (100) is C-shaped, and the cross section of the hole cover (200) is L-shaped. A pair of mounting seats (300) are mounted on the hole cover frame (100), and a pair of locking plates (400) are mounted on the hole cover (200). The mounting seats (300) and the locking plates (400) are connected via locking members (500).

2. A composite material manhole cover according to claim 1, characterized in that: The hole cover frame (100) and the hole cover (200) are made of composite material.

3. A composite material manhole cover according to claim 1 or 2, characterized in that: The mounting seat (300) comprises a pair of mounting plates (301) mounted on the inner side and the outer side of the hole cover frame (100), and a pair of ear plates (302) are provided on the outer mounting plate (301).

4. A composite material manhole cover according to claim 3, characterized in that: The outer end of the locking plate (400) is processed with a notch (401).

5. A composite material manhole cover according to claim 4, characterized in that: One end of the locking member (500) is hinged on the ear plate (302), and the other end can be inserted into the notch (401).

6. A composite material manhole cover according to claim 5, characterized in that: The locking member (500) comprises a mounting bolt (501) penetrating the ear plate (302), a sleeve (502) being sleeved on the bolt of the ear plate (302), a threaded rod (503) being connected to one side of the sleeve (502), and a butterfly nut (504) being threadedly connected to the threaded rod (503).

7. A composite material manhole cover according to claim 1 or 2, characterized in that: The bottom of the hole cover (200) is provided with a support plate (600) that cooperates with the locking plate (400).

8. A composite material manhole cover according to claim 1 or 2, characterized in that: A reinforcing piece (700) is provided at the bottom of the hole cover (200).

9. A composite material manhole cover according to claim 8, characterized in that: The reinforcement member (700) comprises a cross-shaped frame (701), wherein a foam core (702) is arranged inside the cross-shaped frame (701).

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